Thermostatic Steam and Water Mixing Valve

Model A55

The A55 thermostatic mixing valve is of chrome-plated brass construction with a stainless steel alloy internal operating mechanism. The A55 uses bimetal thermostatic technology to automatically proportion inlet steam and water supplies to achieve and maintain a desired outlet temperature. The valve is equipped with an integral, site-adjustable maximum-temperature ( ∆T) fix point.

With flow rates up to 13 gpm* (49 lpm), the A55 is an economical alternative to hot water storage or central heat-exchange systems using existing plant steam to heat water instantly at the point of use. The A55 has 1" (25 mm) NPT inlets and a 1-1/4" (32 mm) NPT outlet. It is supplied with 1" (25 mm) ball valves for inlet flow control. Check valves are recommended.

IMPORTANT: For optimum performance, the A55 should be allowed to operate at maximum flow with nominally equal inlet supply pressures and should not be installed with either outlet flow control or an outlet restriction (spray nozzle, washdown hose, etc.)

WARNING: The A55 is designed for industrial process applications only and may pass live steam under certain circumstances.

*Based upon 60 psi (4 bar) equal inlet steam and water supplies with a 100˚ F (55˚ C) temperature rise.