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What is a high-pressure check valve?
A high-pressure check valve is a type of valve made to withstand high pressure above 500 PSI and which prevents reverse fluid flow. Reverse fluid flow occurs when the pump is turned off reducing forward pressure energy and which may prompt the fluid to change flow direction from forward to reverse. Such reverse fluid flow can lead to damages such as upstream fluid contamination and or interfere with the working of boiler and pump. High-pressure check valves are very strong enough to withstand the high-pressure levels. The high strength ensures that the valve cannot collapse or experience fluid leakage through connected elements. High-pressure check valve manufacturers use strong materials to make the valve such as stainless steel, ductile iron, carbon steel, and cast iron among others. Also, other materials can be used to make internal parts like seats and rings such as plastics and rubber. The use of such soft materials (plastic and rubber) makes the high-pressure check valve suitable for use in low temperatures and high pressure. This is because soft materials have a low resistance to high temperatures. The high-pressure check valve is recommended for use in high-temperature applications if the internal components are made of metals that can withstand high temperatures without causing a chemical reaction.