Thermostatic Mixing Valve

Model TWBS.SHE; Low-lead AXION® Emergency Tempering Valve thermostatically mixes hot and cold water to provide a safe fluid supply for emergency shower and eyewash equipment, with a flow rate of 74 gpm (280 L).

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Specifications

Model TWBS.SHE (patent pending) is a thermostatic mixing valve that mixes hot and cold water to supply tempered water to emergency eyewash fixtures requiring flow up to 74 gpm (280 L). Unit employs a paraffin filled thermostatic mixing element and a secondary high temperature limit valve to provide additional protection. Lowest internal pressure drop where supply pressure is low, and a high Cold Water Bypass flow rate of 50 gpm (189 L). The improved low-lead brass design with a one piece casting uses internal check stops, over-sized valve seats, a shuttle design that eliminates valve sticking, and a funnel design to improve temperature control with better mixing at low flow rates. Lime and calcium resistant components are used throughout. The outlet temperature factory setting is 85° F (26° C). Maximum operating pressure: 125 psi (8.62 Bar). Temperature adjustment range 60 - 90° F (16 - 35° C). Maximum inlet temperature: 180° F (82° C). Recommended inlet temperature: 140° F (60° C). Minimum inlet temperature: 120° F (49° C) Inlet 1-1/4" NPT(F). Outlet 1-1/4" NPT(F).

Pricing Information

$4911 USD
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Thermostatic Mixing Valve

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.)

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
For important installation information, please read Scald Warning.

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. Please click here for more information.