The Difference Between Clamp Check Valves And Flange Check Valves
The difference between clamp check valves and flange check valves is:
The purpose of water hammer pressure is different:
The clamp check valve has a small volume, short disc travel, and is assisted by a spring to close the valve.
Size and weight comparison:
The clamp type check valve has a short structure, small volume, and light weight, bringing great convenience to the installation, handling, storage, and pipeline layout of the valve, which can save a lot of materials and reduce costs; The flange check valve has a long structure, large volume, and heavy weight.
The application of fluid resistance is different:
The clamp type check valve has low resistance and fluid resistance coefficient ξ It is 2.6~2.7. As the valve diameter increases, the fluid resistance coefficient decreases; The flange type check valve is smaller and has a fluid resistance coefficient ξ It is 1.3-3, but under low pressure conditions, the valve disc cannot fully open and the fluid resistance is high. The fluid resistance increases with the increase of valve diameter.
Different installation methods:
The clamp type check valve can be installed horizontally or in a straight line, with light weight and no need to set a bracket for the valve; The horizontal installation of flange check valves and large-diameter valves is heavy and requires the installation of brackets.
Different opening pressures:
The opening of the clamp type check valve is very small, and the valve disc can be fully opened under a small pressure difference; The opening pressure of the flange check valve is high, and the valve disc can fully open under a large pressure difference.
The reliability of valves varies:
The clamp type check valve has an integral structure, which is simple and compact, with low impact force when closing, low water hammer pressure, long valve life, and high reliability; The huge impact force and water hammer pressure when the flange check valve is closed can easily damage the valve.
