Haws Emergency Equipment 2008 - Tempered Water Systems

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Tempered Water Systems
Haws Tempered Water Distribution Diagram
Supplying emergency showers with tempered water protects both the employee and employer. Drench showers with very cold water pose a health hazard to employees and a liability problem to employers. Cold water lines in cold climates typically run from 35°F - 45°F (2°C - 7ºC). In order to completely flush away hazardous chemicals, it is recommended that contaminated body parts be flushed for a minimum of 15 minutes, and that contaminated clothing be removed.
In shower areas exposed to cold air and wind, showering with very cold water discourages proper flushing. Even in a warm environment, cold water discourages victims from meeting the minimum requirements.
Tempered water and heated enclosures address these problems. Tempered water encourages the proper use of drench showers during emergency situations, and also helps prevent excessive body heat loss which could lead to hypothermia. Heated shower enclosures create a sheltered, warm environment that can shield a wet or injured worker from the elements until help arrives.
Tempered water not only provides physical relief from pain caused by heat and corrosive material burns, but also contributes to emotional relief. A worker who has incurred some sort of hazardous exposure is likely to be distraught and agitated. The soothing effect of tempered water will help calm the individual down and make initial first aid treatment more effective.
To determine the need for tempered water, the following should be evaluated: anticipated cold water supply temperatures; local environmental conditions; shower location; and the type of hazard. The U.S. based American National Standards Institute (ANSI) in its voluntary Standard Z358.1-1998, American
National Standard for Emergency Eyewash and Shower Equipment, specifies tempered water. This should be a comfortable water temperature range that will encourage the worker to use the shower/eyewash units. The desirable and generally accepted range for tempered water is 60°F - 95°F (15°C - 35°C). In circumstances where a chemical reaction may be accelerated by water temperature, a medical adviser should be consulted to determine the optimum temperature for each application. Even subtropical locations may have cold water supply temperatures that warrant the installation of tempered water systems. Shower temperatures in the 80°F (27ºC) range help keep users comfortable in colder climates where even 60°F (15°C) showers may not be adequate.
Emergency drench showers consume large quantities of water, typically 20-30 gallons (76-114 liters) per minute. Residential showers use in the range of 3-5 gallons (11-19 liters) per minute. Tempered water systems must safely and reliably provide for these large volume flows. In all cases, scalding water temperatures and flow loss must be prevented. Emergency wash users do not have the luxury of adjustable wash temperatures.
As a leader in Emergency Equipment for over 50 years, Haws Corporation is ready to work with your plant engineering personnel to help select the right components to meet your requirements.
Haws TWBS.CAB Tempered Water Blending System
TWBS.SH
A safe, prepackaged, fully engineered and tested system for mixing large volumes of hot and cold water to provide tempered water for emergency showers and eyewashes. Ideal for areas where supply water temperatures fall below 60°F (15°C). Model TWBS.SH contains no electrical components, which makes it suitable for combustible atmospheres.
Specifications
Fail Safe Back Up: System provides multiple levels of protection to prevent scalding, including a high temperature limit valve (set at 85°F (29°C)). Also included is a full flow cold water bypass that protects against constricted flow.
Tempered Water: Engineered to provide warm water (60°F - 85°F (15°C - 29°C) factory set at 80°F (26°C)) over a wide range of flows, 2-35 GPM. System is designed to mix cold and hot water supplies for a single combination shower and eyewash, or multiple units.
Temperature Gauge: System includes outlet temperature gauge.
Plumbing: 1-1/4” IPS. Dielectric inlet and outlet unions provided. System requires 60 PSI to adequately supply water for a safety shower. Shipping Weight: 45 Ibs.
Options
Higher Capacity Flows: For up to 90 GPM flow requirements (cabinet not available ).
TWBS.CAB Enclosure: Protective, corrosion-resistant fiberglass cabinet with security latch, 19-1/2”H x 16"W x 10-1/4”D. Shipping weight is 20 Ibs.
Haws TWBS.EW Tempered Water Blending System for Eyewashes
Haws TWBS.EW Tempered Water Blending System for Eyewashes

TWBS.EW
A safe, prepackaged, fully engineered and tested system for producing small volumes of tempered water for emergency eyewashes. TWBS.EW mixes supplies of hot and cold water. Used for areas where supply water temperatures fall below 60°F (1S°C).
Specifications
Fail Safe Back Up: System provides multiple levels of protection to prevent scalding including a high temperature limit valve (set at 95ºF (35ºC)). Also included is a pressure relief cold water bypass that protects against constricted flow.
Tempered Water: Engineered to provide warm water. (60°F - 85ºF (15ºC - 29°C) factory set at 80°F (26°C)) for flows up to 5 GPM. System is designed to mix cold and hot water supplies for an eye and eye/face wash.
Temperature Gauge: System includes outlet temperature gauge.
Plumbing: 1/2" IPS. System requires 5 GPM flow rate at 50 PSI dynamic pressure supplied for facewash applications.
Shipping Weight: 18 Ibs.

TWBS.EW.H
A safe, prepackaged, fully engineered and tested system for producing small volumes of tempered water for emergency eyewashes. TWBS.EW.H mixes supplies of hot and cold water. It is ideal where hot water is not present. Used for areas where supply water temperatures fall below 60°F (15°C).
Specifications
Fail Safe Back Up: System provides multiple levels of protection to prevent scalding including a high temperature limit valve (set at 95ºF (35ºC)). Also included is a pressure relief cold water bypass that protects against constricted flow.
Tempered Water: Engineered to provide warm water instantaneously up to 80°F (26°C) for flows up to 2.5 GPM. System is designed to heat cold water supply up to 45ºF (25°C) Delta-T on demand for an eyewash only.
Temperature Gauge: System includes outlet temperature gauge.
Electrical: System requires 480 VAC, 5 wire, 3 phase electrical supply. Other voltages available as special orders.
Plumbing: 1/2" IPS. System requires 2.5 GPM flow rate.
Shipping Weight: 43 Ibs.
Options
TWBS.CAB Enclosure: A protective, corrosion-resistant fiberglass cabinet with security latch, 19-1/2”H x 16”W x 10-1/4”D. Shipping weight is 20 Ibs.
See above for TWBS.CAB drawing.

Haws 8780 Series Tempering Systems

8780
The 8780 Polar Booth series is a skid mounted tempering system that comes equipped with a water heater, mixing valve, and holding tank. Haws systems have multiple levels of back-up protection to ensure uninterrupted flow with anti-scald protection and full flow cold water bypass. These systems may supply a number of drench systems or eyewash stations, and are for use in indoor areas that are protected from freezing. Feeder lines should be heat traced, or a recirculating pump used.
Haws offers 119 and 325 gallon storage capacities, as well as an instantaneous steam heat exchanger as options. Should the simultaneous operation of more than one shower be desired, Haws offers a high-flow blending system for the 325 gallon tank and steam heat exchanger systems. Haws systems are fully engineered to take the guesswork out of your emergency tempered water system.
Specifications
Blending System: Model TWBS.SH. Water Heater: 4.0 kW, 240 VAC copper immersion heater or steam heat exchanger. Thermostat: Dual element thermostat with manual reset hi-limit protection.
Plumbing: 1-1/4" IPS. Schedule 40 galvanized piping with brass and stainless steel valves. Skid: 4' x 5' galvanized steel.
Tempering System Options Tank Systems
119 Gallon Tank (Option No. 21): Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time of up to 6 hours.
119 Gallon ASME Tank (Option No. 22):
Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time of up to 6 hours.
325 Gallon Tank (Option No. 23): Stores enough hot water to provide two 15 minute, 30 GPM showers before tank recovery is required. Recovery time of up to 18 hours. Tank is insulated and jacketed.

Steam Systems
When a steam supply is available, a Haws steam heat exchanger and mixing system is the best approach for efficient tempering, especially with multiple shower or recirculating systems. Haws' standard system is sized to provide up to 35 GPM of 80°F (26°C) tempered water, and requires no recovery time. Higher flow systems are available.
Steam Heat Exchanger (Option No. 24):
Feed forward instantaneous heat exchanger. Requires 15 PSIG, max. 1300 Ib./hr. steam supply.
Electrical System Options Haws' standard system requires 208/240 VAC single phase, 3 wire 20 amp (min.), electrical supply.
NEMA4
tank - Option 31
NEMA 7 CLASS I, DIV2, GR. B, C, D tank - Option 32
NEMA 7 CLASS I, DIV1, GR. C, D tank - Option 33
Haws Tempering Systems can be custom built to your specifications.

Haws 8760 Series Polar Booth

8760
The 8760 Polar Booth series is a skid mounted decontamination and tempering system for use in indoor areas that are protected from freezing. Each unit is equipped with a 20 GPM shower, 5 GPM eye/face wash and a 4 GPM drench hose mounted on a heavy duty galvanized skid. Also included is a modesty curtain, protective wall, hot water supply and tempered blending system. Haws offers 119 and 325 gallon storage capacities, as well as an instantaneous steam heat exchanger as options. All Haws tempered water systems incorporate fail-safe features including anti-scald protection and full flow cold water bypass.
The 8760 is ideal as a stand-alone system or as a feeder to other remote polar booth substations. Should the simultaneous operation of more than one shower be desired, as an option, Haws offers a high-flow blending system for the 325 gallon tank and steam heat exchangers.
Specifications Multiple Drench Systems:
Shower: 10" ABS plastic head with flow control (Model 8129).
Eye/face Wash: 5 GPM Feather Flo* ABS plastic heads (Model SP21).
Drench Hose: 4 GPM hose with flag and ball valve.
Scald Valve: Model SP157 A.
Alarm System: Standard alarm system is flow switch activated and provides local audible and visible alarms with dry hermetic relay contacts for remote alarm hookup. System includes silencing circuit with auto reset. Area light flashes and alarm sounds upon activation.
Flow Switch: 5 amp, DPDT, alarm activation at 2.2 GPM.
Blending System: Model TWBS.SH. Water Heater: 4.0 kW, 240 VAC copper immersion heater or steam heat exchanger. Light: 100 watt, green (normally on). Thermostat: Dual element thermostat with manual reset hi-limit protection.
Plumbing: 1-1/4" IPS. Schedule 40 galvanized piping with brass and stainless steel valves. Skid: 4' x 8' heavy duty galvanized steel frame with open steel grating and forklift slots. The base assembly is supplied with a protective barrier wall and modesty curtain to help promote safety and full decontamination.

Tempering System Options Tank Systems
119 Gallon Tank (Option No. 21): Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time of up to 6 hours.
119 Gallon ASME Tank (Option No. 22): Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time of up to 6 hours.
325 Gallon Tank (Option No. 23): Stores enough hot water to provide two 15 minute, 20 GPM showers before tank recovery is required. Recovery time of up to 18 hours. Tank is insulated and jacketed.
Steam Systems
When a steam supply is available, a Haws steam heat exchanger and mixing system is the best approach for efficient tempering, especially with multiple shower or recirculating systems. Haws' standard system is sized to provide up to 35 GPM of 80°F (26°G) tempered water, and requires no recovery time. Higher flow systems are available.
Steam Heat Exchanger (Option No. 24):
Feed forward instantaneous heat exchanger. Requires 15 PSIG, max. 1300 Ib./hr. steam supply.
Electrical System Options Haws' standard system requires 208/240 VAC single phase, 3 wire 20 amps (min.), electrical supply.
NEMA4 tank - Option 31, steam - Option 36
NEMA 7 CLASS I, DIV2, GR. B, C, D tank - Option 32, steam - Option 37
NEMA 7 CLASS I, DIV1, GR. C, D tank - Option 33, steam - Option 38
*Patent #: 3,602,436

Haws 8710 Series Polar Booth

8710
The 8710 Polar Booth series includes an insulated all-weather booth with an integral hot water supply and tempered blending system. Haws offers 119 and 325 gallon storage capacities, as well as an instantaneous steam heat exchanger as options. All tempered water systems incorporate fail-safe features, including anti-scald protection and full flow cold water bypass.
The 8710 is ideal as a complete standalone system, or as a feeder to other remote polar booth substations. Multiple shower systems may be connected with heat-traced lines or pump driven recirculating lines.
Specifications Enclosure:
Booth: Exterior and interior FRP skins with
1 -1/2” flame retardant insulation: Total R value = 11. Protected with UV inhibitors, the exterior resin skin is bright yellow with Safety Green graphics. Large graphics identify the booth as an emergency shower/eyewash station and assist in guiding the user to the double swing doors. Interior space is heated and illuminated to provide for safe user comfort. Shower area is a spacious 5' x 4', the tempering area is 5' x 5', and a large access panel is provided to facilitate equipment access and maintenance. Grate: Floor grate is fiberglass.
Doors: Dual spring-loaded, self-closing with clear 8" x 12" Lexan windows.
Multiple Drench Systems:
Shower: 10" ABS plastic head with flow control (Model 8129).
Eye/Face Wash: 5 GPM Feather-Flo* ABS plastic heads.
Drench Hose: 4 GPM hose with flag and ball valve.
Freeze/Scald Valves: Models SP157 A and SP158A.
Alarm System: Standard alarm system is flow switch activated, and provides local audible and visible alarms with dry hermetic relay contacts for remote alarm hookup. System includes silencing circuit with auto reset. Area light flashes and alarm sounds upon activation.
Flow Switch: 5 amp, SPDT, alarm activation at 2.2 GPM.
Blending System: Model TWBS.SH.
Water Heater: 4.0 kW, 240 VAC copper immersion heater or steam heat exchanger. Space Heater: Natural convection 2.5 kW, for hazardous classification; forced air 3 kW for NEMA 4.
Lights: 100 watt, interior clear and exterior green (normally on).

Thermostat: Dual element thermostat with manual reset hi-limit protection.
Plumbing: 1-1/4" IPS. Schedule 40 galvanized piping with brass and stainless steel valves. 3" inside caulk.
Tempering System Options Tank Systems
119 Gallon Tank (Option No. 21): Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time of up to 6 hours.
119 Gallon ASME Tank (Option No. 22):
Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time of up to 6 hours.
325 Gallon Tank (Option No. 23): Stores enough hot water to provide two 15 minute, 30 GPM showers before tank recovery is required. Recovery time of up to 18 hours. Tank is insulated and jacketed.
Steam Systems
When a steam supply is available, a Haws steam heat exchanger and mixing system is the best approach for efficient tempering, especially with multiple shower or recirculating systems. Haws' standard steam system is sized to provide up to 35 GPM of 80°F (26°C) tempered water, and require no recovery time. Higher flow systems are available.
Steam Heat Exchanger (Option No. 24):
Feed forward instantaneous heat exchanger. Requires 15 PSIG, max. 1300 Ib./hr. steam supply.
Electrical System Options Haws' standard system requires 208/240 VAC single phase, 3 wire 40 amp (min.), electrical supply.
NEMA 4 tank - Option 31, steam - Option 36
NEMA 7 CLASS I, DIV2, GR. B, C, D tank - Option 32, steam - Option 37
NEMA 7 CLASS I, DIV1, GR. C, D tank - Option 33, steam - Option 38
*Patent #: 3,602,436

Haws 8730 Series Polar Booth

8730
The 8730 Polar Booth series comes equipped with a 20 GPM shower, 5 GPM eye/face wash and 4 GPM drench hose. The use of insulated materials and a space heater provide an environment that is safe and comfortable for the user. Large graphics identify the booth as an emergency shower/eyewash station and assist in guiding the user to the double swing doors. Local audible and visible alarms summon help to assist the injured worker.
The 8730 may be installed individually or used as a component for a larger tempered water system.
Specifications
Enclosure:
Booth: Exterior and interior FRP skins with 1 %" flame retardant insulation: Total R value = 11. Protected with UV inhibitors, the exterior resin skin is bright yellow with Safety Green graphics. Large graphics identify the booth as an emergency shower/eyewash station and assist in guiding the user to the double swing doors. The interior space is heated and illuminated to provide for safe user comfort.
Grate: Floor grate is fiberglass.
Doors: Dual spring-loaded, self-closing with clear 8" x 12" Lexan windows.
Multiple Drench Systems:
Shower: 10" ABS plastic head with flow control (Model 8129).
Eye/Face Wash: 5 GPM Feather-Flo* ABS plastic heads.
Drench Hose: 4 GPM hose with flag and ball valve.
Freeze/Scald Valves: Models SP157 A and SP158A.
Alarm System: Standard alarm system is flow switch activated and provides local audible and visible alarms with dry hermetic relay contacts for remote alarm hookup. System includes silencing circuit with auto reset. Area light flashes and alarm sounds upon activation.
Flow Switch: 5 amp, SPDT, alarm activation at 2.2 GPM.
Space Heater: Natural convection 2.5 kW, for hazardous classification; forced air 3 kW for NEMA 4.
Lights: 100 watt, interior clear and exterior green (normally on).
Plumbing: 1-1/4" IPS. Schedule 40 galvanized piping with brass and stainless steel valves. 3" inside caulk.
Electrical System Options Haws' standard system requires 208/240 VAC single phase, 3 wire 15 amp (min.), electrical supply.
NEMA 4 8730 - Option 31
NEMA 7 CLASS I, DIV2, GR. B, C, D 8730 - Option 32
NEMA 7 CLASS I, DIV1, GR. C, D 8730 - Option 33
*Patent #: 3,602,436

Haws 8785 Polar Booth II

8785
The Polar Booth II series is an ideal economical alternative when extreme weather conditions are not a factor, but a multitude of features are required.
Model 8785 is an enclosed and heated tempering station with integral hot water supply. It includes a hot water storage tank with heater, mixing valve, and space heater.
Specifications
Enclosure:
Booth: Exterior and interior skins are constructed from high-density polyethylene combined with 1-1/8” thick fire retardant foam insulation to give an approximate value of R8. Protected with UV inhibitors, the exterior skin is bright yellow with Safety Green graphics. Large graphics identify the booth as a tempering station. The interior space is heated to protect the equipment from freezing.
Grate: Floor grate is galvanized steel. Door: Spring-loaded, self-closing with clear Lexan window.
Blending System: Model TWBS.SH. Water Heater: 4.0 kW, 240 VAC copper immersion heater.
Space Heater: Natural convection 2.5 kW for hazardous classification; forced air 3 kW for NEMA 4 areas.
Thermostat: Dual element thermostat with manual reset hi-limit protection.
Plumbing: 1-1/4" IPS. Schedule 40 galvanized piping with brass and stainless steel valves.
Tempering Station Options
119 Gallon Tank (Option No. 21): Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time up to 7 hours.
119 Gallon ASME Tank (Option No. 22):
Stores enough hot water to provide a single 15 minute, 20 GPM shower. Recovery time up to 7 hours.

Electrical System Options
Haws' standard system requires a 208/240 VAC single phase, 3 wire 40 amp (min.), electrical supply.
NEMA 4 (Option No. 31): Indoor/outdoor to provide a degree of protection against rain, snow, blown dust, splashing and hose directed water.
Class 1, Div 2, GR. B, C, D (Option No. 32): Locations where ignitable concentrations of flammable gasses or vapors are not normally present, but could be present in the event of a fault.

Haws 8735 Polar Booth II

8735
The Polar Booth II series is an ideal economical alternative when extreme weather conditions are not a factor, but a multitude of features are required.
Model 8735 is an insulated enclosure with a cable heat traced shower, an eye/face wash, an alarm system, an interior light and a green exterior light. It is suitable for both indoor and outdoor environments. It is also suitable for areas where user privacy and protection, equipment protection, freeze prevention, or waste water disposal is a concern.
Specifications
Enclosure:
Booth: Exterior and interior skins are constructed from high-density polyethylene combined with 1%" thick fire retardant foam insulation to give an approximate value of R8. Protected with UV inhibitors, the exterior skin is bright yellow with Safety Green graphics. High visibility green mold-in directional arrows assist in guiding the user to the entrance.
Grate: Floor grate is galvanized steel. Door: Spring-loaded, self-closing with clear Lexan window.
Shower: 10" ABS plastic in Safety Green (Model 8129).
Activation: Single motion pull down handle operates a stay open chrome plated brass valve with a bleed hole.
Flow control: Restrictor ensures minimum 20 GPM (but not excessive under various flowing pressure).
Eye/Face Wash: Twin Feather-Flo* patented ABS plastic eye/face wash heads in Safety Green with integral flip top dust covers that protect heads and automatically release with water pressure (Model SP21).
Activation: Push flag operates a chrome plated stay open ball valve.
Flow Control: Dual automatic pressure compensation devices ensure steady water flow under various flowing pressures. Alarm System:
Light: 100 watt, Green flashing.
Audible Alarm: Intermittent signal rated at 90 DB @ 10 feet.
Flow Switch: 5 amps, DPDT, alarm activated at 2.2 GPM.
Remote Alarm Contact: Normally closed contact provided as a standard.
Insulation for Plumbing: Safety Green, UV resistant, ABS jackets with removable polyethylene foam insulation. Includes elastomeric seal for added weather protection.
Electrical Heat Trace Cable: Reliable self regulating heat cable with external braid, guards against overheating and cold spots. Freeze protection bleed valve: In case of power outage, it provides freeze protection by bleeding water through the lines when internal water temperature drops below 35°F (2°C). Closes at 45°F (7ºC) (Model SP158A).
Plumbing: 1" IPS. Schedule 40 galvanized piping with brass and stainless steel valves. 3" inside caulk.
Electrical System Options
Haws' standard system requires a 120 VAC 5 amp (min.) electrical supply.
8735.31: NEMA 4 water-tight/dust-tight
8735.32: Class 1, Division 2, Group B, C, and D - explosion proof.
*Patent No. 3,602,436

Haws 8607 Series Polar Booth II

8607
The Polar Booth II series is an ideal economical alternative when extreme weather conditions are not a factor, but a multitude of features are required.
Model 8607 is suitable for both indoor and outdoor environments. It is also suitable for areas where corrosion resistance, user privacy and protection, or waste water disposal is a concern.
Specifications Enclosure:
Booth: Exterior and interior skins are constructed from high-density polyethylene combined with 1-1/8" thick fire retardant foam insulation to give an approximate value of R8. Protected with UV inhibitors, the exterior skin is bright yellow with Safety Green graphics. High visibility green mold-in directional arrows assist in guiding the user to the entrance.
Grate: Floor grate is galvanized steel. Door: Spring-loaded, self-closing with clear Lexan window.
Multiple Drench Systems:
Shower: 10" ABS plastic in Safety Green (Model 8129).
Activation: Single motion pull down handle operates a stay open chrome plated brass valve with a bleed hole.
Flow control: Restrictor ensures minimum 20 GPM (but not excessive under various flowing pressures).
Eye/Face Wash: Twin Feather-Flo* patented ABS plastic eye/face wash heads in Safety Green with integral flip top dust covers that protect heads and automatically release with water pressure (Model SP21).
Activation: Push flag operates a chrome plated stay open ball valve.
Flow Control: Dual automatic pressure compensation devices ensure steady water flow under various flowing pressures.

Freeze protection bleed valve: provides freeze protection in moderately cold environments. Water bleeds through the lines when internal water temperature drops below 35°F (2°C). Closes at 45°F (7ºC) (Model SP158A).
Plumbing: 1" IPS. Schedule 40 Galvanized piping with brass and stainless steel valves. 3" inside caulk.
Options
Alarm packages are available.
*Patent No. 3,602,436

Haws 8606 Series Polar Booth II

8606
The Polar Booth II series is an ideal economical alternative when extreme weather conditions are not a factor, but a multitude of features are required.
Model 8606 is suitable for cleanroom environments in most applications. It is also suitable for areas where material corrosion resistance, user privacy, or waste water disposal is a concern.
Specifications
Enclosure:
Booth: Exterior and interior skins are constructed from high-density polyethylene combined with 1-1/8" thick fire retardant foam insulation to give an approximate value of R8. Protected with UV inhibitors, the exterior skin is bright yellow with Safety Green graphics. High visibility green mold-in directional arrows assist in guiding the user to the entrance.
Grate: Floor grate is powder-coated steel with corrosion-resistant substrate. Multiple Drench Systems:
Shower: 10" ABS plastic in Safety Green (Model 8129).
Activation: Single motion pull down handle operates a stay open chrome plated brass valve with a bleed hole.
Flow control: Restrictor ensures minimum 20 GPM (but not excessive under various flowing pressure).
Eye/Face Wash: Twin Feather-Flo* patented ABS plastic eye/face wash heads in Safety Green with integral flip top dust covers that protect heads and automatically release with water pressure (Model SP21).
Activation: Pull down arms operate a polished chrome plated stay open valve.
Flow Control: Dual automatic pressure compensation devices ensure steady water flow under various flowing pressures. Plumbing: 1" IPS. Schedule 40 powder coated galvanized steel with corrosion resistant substrate. 3" inside caulk.
Options
Model 9040: Shower curtain for privacy and water containment.
Alarm packages are available.
*Patent No. 3,602,436

Haws 8317 Freeze Resistant Emergency Shower & Eyewash

8317CTFPT
Top supply
8317CTFPB
Bottom supply
The 8317 series has two cable traced, freeze-resistant models available with a top or bottom supply.
Specifications Multiple Drench Systems:
Shower: 10" A8S plastic in Safety Green (Model 8129).
Activation: Rigid stainless steel pull rod operates a stay-open chrome plated brass ball valve that is equipped with a stainless steel stem.
Flow Control: 20 GPM chrome plated brass assembly (Model SP38.20).
Floor Flange: 9" diameter with 1-1/4" hot dip galvanized steel pipe.
Jacket: Safety Green, UV-resistant, A8S plastic with removable polyethylene foam insulation. Includes elastomeric seal for added weather protection.
Eye/Face Wash: Twin Feather-Flo* patented A8S plastic eye/face wash heads in Safety Green with integral flip top dust covers that protect heads and automatically release with water pressure (Model SP21).
Activation: Stainless steel push flag operates a stay open chrome plated brass ball valve that is equipped with a stainless steel ball and stem.
Drench Hose: Heavy duty, UV-resistant 4-1/2’ length. Allows for spot washing of body, boots or equipment. Activated by stainless steel push plate which operates a stay open ball valve.
Electric cable: Reliable self-regulating heat cable with external braid guards against overheating and cold spots. FM and CSA approved. CLASS 1, Division 2, Group 8, C, D. NEC T6 185°F (85°C).
Thermostat: The temperature control thermostat shuts off heat at 57º - 67ºF (8°C - 11°C). CLASS 1, Division 2, Group 8, C, D explosion proof.
Freeze Protection Bleed valve: (Model SP158A) Flushes water through line when internal water temperature drops below 35°F (2°C). Closes at 45°F (7ºC).
Junction box: CLASS 1, Division 1, Group 8, C, D supplied with units.
Electrical: System requires a 120 VAC, 60 HZ single phase electrical supply.
Plumbing: 1-1/4" IPS.
Shipping weight: 110 Ibs.
Options
Model 8127: Stainless steel shower head.
Model 9001: Weatherproof alarm (CL 1, DIV 2 available).
ModeI 8317NEMA4IDLT: NEMA 4 indicator light kit. When lighted, indicates that power is being supplied to shower.
Model 8317NEMA7IDLT: NEMA 7 indicator light kit, CLASS 1. Div. 2, Group 8, C, D.
Model 8317NEMA4LT: Vapor tight and gasketed NEMA 4 green area light for continuous illumination of shower, CLASS 1, Div. 2, Group 8, C, D. "T28".
Model 8317NEMA7LT: Explosion proof white area light for Class 1, Div. 1, Group C and D. "T3C".
Model SP157 A: Scald protection bleed valve flushes water when internal temperature rises above 110°F (43°C) to prevent the possibility of scalding water. Closes at 95°F (35°C). Recommended for areas where extreme heat, or hot sun might cause internal water overheating.
Model 8317CTFPEXP: Similar to Model 8317CTFP except explosion proof. CLASS 1, Div. 1, Group C and D.
Model 8317CTFP.220V: Similar to Model 8317CTFP, except 220 VAC.
*Patent No. 3,602,436

Haws 9201 Thermostatic Mixing Valve
9201
Suitable for multiple eye or face wash fixtures or flows up to 25 GPM.
Specifications
Fail Safe Back Up: Liquid thermal thermostat with tamper resistant control adjustment. System shuts off all incoming hot water should cold water supply fail. Should the hot water supply become interrupted, or the thermostatic element fails, the valve will go into cold water bypass flow.
Tempered Water: The thermostatic element responds to changes in incoming hot and
cold water temperatures to maintain outlet temperatures to +/- 5°F (2.5ºC). Varying conditions can be up to a 30°F (16°C) change in hot water temperature, 30°F (16°C) change in cold water temperature, and a 50% drop in inlet supply pressure. The factory setting is 80°F (26°C). The valve is constructed of bronze, brass, copper and stainless steel and contains an easy to replace thermostatic cartridge.
Temperature Gauge: System includes outlet temperature gauge for performance monitoring.
Plumbing: 1-1/4" IPS inlet and outlet. Maximum inlet pressure is 125 PSI. Isolation check valves are included for both supplies.
Haws 9202 Thermostatic Mixing Valve
9202
Suitable for multiple eye or face wash fixtures and emergency drench showers, or flows up to 60 GPM.
Specifications
Fail Safe Back Up: Liquid thermal thermostats with tamper resistant control adjustment. System shuts off all incoming hot water should cold water supply fail. Redundant thermostatic elements provide tempering even when one element fails. Should the hot water supply become interrupted, or the thermostatic elements fail, the valve will go into cold water bypass flow.
Tempered Water: Twin thermostatic elements respond independently to changes in incoming hot and cold water temperatures to maintain outlet temperatures to within 5°F (2.5ºC). Varying conditions can be up to a 30°F (16°C) change in hot water temperature, 30°F (16°C) change in cold water temperature, and a 50% drop in inlet supply pressure. Factory set at 80°F (26°C). The valve is constructed of bronze, brass, copper and stainless steel, and contains easy to replace thermostatic cartridges.
Temperature Gauge: System includes 3 temperature gauges for performance monitoring.
Plumbing: 1-1/4" IPS inlet and outlet. Maximum inlet pressure is 125 PSI. Inlets can be attached from top or bottom. Isolation check valves are included for both supplies.

RECIRCULATING SYSTEMS
In areas where a Haws tempering system is needed for a loop of safety equipment, a recirculating package can be added to provide warm water at all points of use. A low flow pump with the necessary controls can be added to the system to allow the user of a safety shower an immediate supply of warm water.
FEATURES
Recirculating Pump: Haws can supply a complete 316 stainless steel end suction centrifugal pump. This pump is sized per the customer's designed loop to deliver 5 to 10 GPM of warm water. The water leaves the booth at 80°F (26°C) and travels throughout the loop. As the water returns, it is reheated to 80°F (26°C).
Scalding Protection: Haws Model TWBS.SH offers two levels of protection to prevent scalding water from traveling to the showers. In the event the outlet temperature of the mixing valve reaches 85°F (2g°C), the Hot-limit shutoff valve closes off the hot water supply and allows all flow to go through the cold side. This prevents the hot water from heating the outlet. Haws also supplies the customer with an aquastat. An aquastat is a temperature switch that senses the loop water temperature. Should the water reach 90°F (32°C), the switch will turn off the pump to allow the water to cool down by convection. This switch can also be wired to provide a high temperature alarm. Dry contacts are provided for remote alarming.
If the customer requires that the recirculation pump to be on at all times, Haws can add a solenoid switch which can be opened when temperature reaches 90°F (32°C). This will allow the hot water to dump to the drain and allow a supply of cold water to enter the loop.
If a low temperature alarm is needed, Haws can offer a second aquastat to sense the low end of water temperature. Again, this can be wired to a remote alarm with the use of dry contacts.
ADVANTAGES
A Haws tempering system with a recirculating package installed ensures an immediate supply of warm water at any point in the safety equipment loop. This guarantees that the user will stay in the shower. A Haws recirculating package offers two levels of scalding protection to ensure a comfortable temperature of water at all times.

BOOSTER PUMP SYSTEMS
When a Haws tempering system is specified for a dedicated safety shower loop which has an insufficient water pressure, Haws can add a booster pump package to overcome the pressure loss. A booster pump with the necessary controls can be added to ensure proper flow at all showers that are connected to the system.
FEATURES
Booster Pump: Haws can supply an end suction, centrifugal pump that has been sized to provide the required flow to meet the ANSI standard. This pump can be sized to provide flow for a single shower or multiple showers.
Controls: The standard control for the booster pump is a flow switch. When flow is initiated through the tempering system, the flow switch will activate the booster pump. The pump pushes the water through the tempering system and out to the shower, or showers in use. This flow switch can be wired to a remote alarm with the use of a provided dry contact.
Options: In case of a power loss, a normally opened solenoid valve can be provided to bypass the tempering system. This allows cold water to bypass the loop and avoid the pressure drop in the tempering system, thus, providing a shower at all times. If a flow switch is not acceptable, the system can utilize a pressure-switching device. As the pressure drops in the system, the switch will recognize the loss of pressure and turn on the pump. With the use of a timer, the pump will remain on for 15 minutes even if flow is not needed for the duration.
If a backup pump is needed, Haws can add the second pump with the necessary controls to properly operate both pumps. In case of pump failure, the secondary pump will be automatically activated. After a period of time, the pumps will change from the lag pump to the lead pump to ensure proper function at all times. This is controlled with a programmable logic controller.
If there is an in-house standard for pumps, Haws can provide the make and model required on site, assuming that pump meets the needs and requirements for proper flow.
ADVANTAGES
In areas where there is not a sufficient potable water supply, a booster pump can be added to a Haws tempering system to provide the required flow at any shower in the loop. This ensures a proper flow at even the farthest showers. The booster pump unit eliminates the need for several tempering systems throughout the plant.

AIR-CHARGED SYSTEMS
In areas where tempered water is required, but there is no potable water supply capable of driving a shower, Haws can provide a fully assembled, warm water system that is driven by compressed air. This air driven system shall meet all the requirements of the current ANSI standard, Z358.1-1998.
FEATURES
Storage Tank: Haws will supply a 325 gallon storage tank that is maintained at 80°F (29°C). This capacity is required to provide the required 15 minute shower at 20 GPM. The tank temperature is maintained with the use of an immersion heater.
Water Supply: Water can either be supplied by the customer via a water truck, or provided by a low pressure, low flow potable supply. Water should be clean and free from debris.
Air Pressure: Water pressure is obtained from two compressed air cylinders. These cylinders are provided with the safety shower equipment, and are filled with clean breathing quality air. These cylinders are sized to provide the required 15 minute shower. A pressure regulator manifold is provided to ensure a constant supply of pressure at the shower head.
Alarms: To guarantee a safe and consistent shower with every use, Haws provides several levels of alarms. These alarms let individuals know there is a problem with the system. All alarms have their own individual dry contact for remote alarming. Any alarm will sound an audible alarm and flash the area light. In addition, the main junction box has indicator lights installed to specify which alarm has been activated. Electrical can be either specified explosion proof equipment or NEMA 4 equipment.
Low Level Alarm: A low level alarm is provided to warn individuals that the tank has dropped to one third of its original capacity. This ensures that the tank is kept at full level.
Flow Alarm: Like all Haws tempering systems with showers, a flow switch is installed to let others know the shower is in use. This switch operates at flows associated with eyewashes to shower.
High/Low Pressure Alarm: A high/low pressure alarm is incorporated to ensure that the air cylinder manifold is properly set. This is a dual acting switch so both high and low pressure is being monitored.
High/Low Temperature Alarm: A temperature sensing switch is installed directly into the tank. This switch monitors the tank temperature, both high and low, to ensure that the tank heater is operating properly, or has been set incorrectly.
ADVANTAGES
In areas where there is not a sufficient potable water supply or no water at all, Haws' air-charged systems can be installed to provide the protection needed against chemical spills. In the event there is a power loss at the time of an accident, the Haws air charged system will still provide a shower. A pump driven system will be rendered useless with the loss of power.

REVERSE TEMPERING SYSTEMS
Certain conditions will produce water that is too hot for safety shower/eyewash purposes. For these cases, Haws provides reverse tempering systems to bring water temperatures down to a usable 85°F-90°F (29°C-32°C).
Whether the heat in the safety shower line is produced by high ambient temperatures, a hot potable water supply, or exposure to a process environment, any excessively hot water will need to be cooled before it is usable as safety equipment flushing fluid.
Haws is prepared to cool water no matter the source of heat or irregularity of the heat load. However, in practice, there are two main scenarios requiring reverse tempering.
Scenario #1: The water supply itself is not hot, but the above-ground piping in the shower recirculation line is exposed to extreme ambient conditions which heat the water. In this case, the above-ground water will need to be chilled with a recirculating chiller.
Scenario #2: The same circumstances as in Scenario #1 exist, but with the additional element of a water supply that is hot. This hot water supply need not be chilled instantaneously, but must be prevented form reaching the safety equipment. Adding to the shower line a storage tank large enough to provide chilled water for a fifteen minute drench shower prevents the hot water supply from reaching the safety equipment. Bottom line, Scenario #2, in addition to a chiller, requires a storage tank.
FEATURES:
Chiller: The heart of the reverse tempering system is the chiller. A properly sized chiller removes excess heat from the water supplying the safety showers and eyewashes and maintains a desired temperature.
Recirculation pump: Any reverse tempering system will require a recirculation pump. In most cases, chilled water will be recirculated through a recirculation loop in the shower line. Recirculation loops, however, are not always present. In the absence of a recirculation loop in the shower line, chilled water will be recirculated between the chiller and a storage tank. A recirculation pump will continually move water through the chiller out to the safety shower loop (or tank, in case there is no recirc. loop) and back to the chiller, thereby regulating the water temperature and keeping chilled water near or at the point of use.
Booster pump: A booster pump mayor may not be used with a reverse tempering system, depending on supply water pressure relative to system head, and how many showers are to be run simultaneously. The booster pump provides the pressure needed at a high enough flow to operate the required number of safety showers.
Storage Tank: Scenario #2 requires a storage tank large enough to provide at least one fifteen minute shower. Scenario #1 requires a storage tank only if there is no recirculation shower line.
Controls: The chiller controls are very simple. Set the desired temperature on the control panel and the chiller will automatically maintain the loop at that temperature.
ADVANTAGES:
A Haws reverse tempering system provides a skid-mounted solution to hot water problems in safety shower piping. Requiring only electrical and water hookups, the unit will feed properly tempered water for use at safety shower/eyewash points of use.

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