2012/12/14 · 9.CAPACITY OF VALVE The capacity of the safety valve is the quantity of steam it can relieve when the valve is fully open. The safety valves in a boiler are so selected that the capacity of spring loaded safety valves on drum and superheater put together 12.
Pressure safety valve theory and PSV valve mechanism
2017/8/23 · Safety valves are designed to automatically pop open on pressure and stay open until there is a definite drop in pressure inside of the boiler. The pressure at which a PSV valve operates is known as blow down of safety valve & reseating pressure is called blow back, without chattering (opening and closing quickly).
Safe management of industrial steam and hot water boilers
Watts Safety Relief Valves feature a two-ring design that ensures sharp opening action and short blowdown, providing over-pressure protection with minimal loss of steam, gas, or vapor. Our valves have a top guided, full nozzle, high capacity design to minimize valve