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Installation et sélection du type de clapet anti-retour

Heure: 2022-05-13 Les coups : 15

Several conventional applications of check valves

In order to prevent the reverse flow of medium, check valves shall be installed on equipment, devices and pipelines; Check valves are generally suitable for clean media, not for media containing solid particles and high viscosity.
So, how to choose the check valve on different pipelines? Walter gives you the following summary:
1. For the inlet pipeline of the water pump, the foot valve should be selected. Generally, the foot valve is only installed on the vertical pipeline at the pump inlet, and the medium flows from bottom to top;
2. The lifting and swing type has good sealing performance and large fluid resistance. The horizontal type should be installed on the horizontal pipeline and the vertical type on the vertical pipeline;
3. The installation position of swing check valve is not limited. It can be installed on horizontal, vertical or inclined pipelines. If installed on vertical pipelines, the medium flow direction should be from bottom to top; The swing check valve should not be made into a small-diameter valve, but can be made into a very high working pressure. The pressure can reach 42MPa, and the maximum size can reach more than 2000mm. The materials of shell and seal are different, which meet the requirements of different media. Walter only produces and exports valves whose medium is water. The working temperature range of the medium is 0 ℃ - 85 ℃; The dimension of Walter conventional swing check valve is dn50-dn600.
4 butterfly check valve can also be called double plate check valve. Its installation position is not limited. It can be installed on horizontal pipeline or vertical or inclined pipeline; It is generally applicable to small diameter pipes. Walter supplies dn50-dn600 wafer double plate check valves all year round.
5 spherical check valve is suitable for medium and low pressure pipelines and can be made into large diameter. Walter spherical check valve has complete specifications. EPDM wraps the valve ball and has longer service life and packaging.
The corresponding size of the check valve shall be determined, and the valve supplier must provide the data of the selected size, so as to find the size of the valve when the valve is fully open at a given flow rate; Walter provides you with various types of water valves with normal pressure of PN10 / PN16 / PN25 under standards of GB / EN / DIN. Welcome to consult and purchase!