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TWBS.SHE Thermostatic Mixing Valve

Brand: Haws Corporation

Model TWBS.SHE, low-lead Emergency Valve (patent pending), thermostatically mixes hot and cold water to provide a safe fluid supply for emergency shower and eyewash equipment. 

The valve contains a secondary high temperature limit valve to provide additional protection to the user in the event of main tempering valve malfunction. 

Additionally, to ensure a fail-safe water supply for emergency shower and eyewash stations, a series of cold water by-pass valves open in the event of hot water pressure loss. (No gauges supplied - ASSE 1071 standard recommends gauges be placed 5 to 8 feet (1.52 to 2.44 m) downstream for the most accurate temperature measurement.)

Listings: CSA certified per ASSE 1071, ANSI Z358.1, applicable sections of CSA B125.3, NSF/ANSI 372, NSF/ANSI 61-section 8, California Health and Safety Code 116875 (AB 1953).

Prop 65 Warning. For California Residents Warning: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm.
Features
  • A flow rate of 1 to 74 gpm (280 L) for better temperature control across the operating range
  • AXION's superior design and technology provide a complete safety solution for increased victim comfort.
  • Lowest internal pressure drop for this class of valve (advantage where supply pressure is low)
  • Wax based thermostat technology for fast response time with proven highly reliable temperature control
  • Highest Cold Water Bypass flow rate in the industry (68% of rated tepid flow rate)
  • Low-lead brass valve design with internal check stops
  • Over-sized valve seats resist failures caused by foreign matter
  • A new and efficient shuttle design eliminates valve binding
  • A custom funnel design improves temperature control at low flow rates
  • Outlet temperature is factory set to 85° F (29° C)
  • Tempered water: High temperature limit is factory set to 87° F (30° C)
  • Cold water by-pass valves are closed during normal operation, regardless of flow rate

Specifications

Flow Rate

  • Maximum: 74 GPM 280 LPM
  • Minimum: 1 GPM 4 LPM

Hot Inlet Temperature

  • Maximum: 180° F 82° C
  • Minimum: 120° F 49° C

Recommended Hot Inlet Temperature

  • Maximum: 140° F 60° C

Cold Inlet Temperature

  • Maximum: 70° F 21° C
  • Minimum: 40° F 4° C

Adjustable Outlet Temperature Range

  • Maximum: 85° F 29° C
  • Minimum: 60° F 16° C

Operating Pressure

  • 125 psi 8.6 BAR

Factory Temperature Set Point

  • 85° F 29° C

Cold Water Bypass

  • 50 GPM 189 LPM @ 30 psid
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