Model TWBS.EW

Model TWBS.EW

U.S. List Price: $2690.00

Pricing Terms

Model TWBS.EW, prepackaged, fully engineered and tested hot and cold water blending system with fail-safe features to produce up to 5 gpm tempered water for eye/face washes (Pat.# 5,350,112).

Model TWBS.EW Product Details

Model TWBS.EW* A prepackaged, fully engineered and tested system that mixes hot and cold water to supply tempered water to one eye/face wash or two eyewash fixtures requiring flow up to 5 gpm. System consists of a thermostatic mixing valve, a high temperature limit valve, a bypass valve, and an outlet temperature gauge.

  • Unit is constructed of bronze, brass, copper and stainless steel.
  • Ideal for areas where supply water temperatures falls below 60 °F (15 °C) while hot water supply is available.
  • Unit contains no electrical components, thus suitable for combustible atmospheres.
  • Maximum inlet pressure: 125 psi. Maximum inlet temperature: 180 °F (82 °C). Recommended inlet temperature: 140 °F (60 °C).
  • Pressure requirements: 50 psi to adequately supply water for eye/face wash.
  • Inlet and Outlet: 1/2" IPS. Dielectric outlet union provided.


*Patent No. 5,350,112

Buy America Act Information

The vast majority of Haws products qualify under the terms of the act. However, since different purchases often require subtly different responses, Haws recommends that the specific document requesting certification be sent to customer service for a specific answer.

Model TWBS.EW Components

Hot shut-off valve
Part 0006599800 Type 304 Stainless Steel valve shuts off when water temperature exceeds 95°F (35°C). Valve reopens when water temperture falls below 85°F (29°C). 1/2" IPS.

Bypass Valve
Part 0006600051 bronze pressure relief valve opens when pressure differential reaches 25 psi or above. Allows cold water to bypass mixing valve. 1/2" IPS.

Mixing Valve
Part 0006600301 chrome-plated brass thermostatic mixing valve provides flow up to 5 gpm of tempered water from 60°F (16°C) to 85°F ( 29°C). Factory set at 80°F (27°C). 1/2" IPS inlet and outlet.

Test This Week Tag
SP170 is a green waterproof test card with space for date and initials of inspector. Used to record weekly testing of emergency equipment.

Model TWBS.EW Options & Accessories

Model TWBS.EW Downloads

Cleaning & Maintenance

There are no cleaning and maintenance instructions for this model. Please contact Haws' Technical Department at 800-766-5612 for instructions.

Model TWBS.EW Sample Specifications

Model TWBS.EW*, a prepackaged, fully engineered and tested system that mixes hot and cold water to supply tempered water to one eye/face wash or two eyewash fixtures requiring flow up to 5 gpm. System consists of a thermostatic mixing valve, a high temperature limit valve, a bypass valve, and an outlet temperature gauge. Unit is constructed of bronze, brass, copper and stainless steel. Ideal for areas where supply water temperatures falls below 60 °F (15 °C) while hot water supply is available. Unit contains no electrical components, thus suitable for combustible atmospheres. Maximum inlet pressure: 125 psi. Maximum inlet temperature: 180 °F (82 °C). Recommended inlet temperature: 140 °F (60 °C). Pressure requirements: 50 psi to adequately supply water for eye/face wash. Inlet and Outlet: 1/2" IPS. Dielectric outlet union provided. *Patent No. 5,350,112