Provided specifically to eliminate damage to the automatic recirculation valve and bypass piping due to flashing or cavitation.

The HBE Anti-Flash valve functions as a variable orifice to assure the pressure of the downstream liquid does not fall below the vapor pressure of the fluid.

Applications which require Anti-Flash valves include boiler feed or condensate pumps which bypass back to a low or negative pressure condenser. Another need for Anti-Flash valves occurs on boiler feed pumps returning to the deaerator in peaking units. Recirculation valves in peaking units can run in a modulating state for extended periods of time with the bypass partially open. Due to the lack of piping friction, the temperature rise across the pump/valve can result in a flashing/cavitation condition.

The Anti-Flash valve is sized to produce a minimum of 30 PSIA above the vapor pressure.

Installation of the Anti-Flash valve is between flanges of the bypass piping size and ANSI rating. Installed adjacent to the condenser or deaerator tank will assure protection of the entire bypass system.