CI NRV Non Return Valve/Reflux Valve Flange End

Swing Check Valve:

Swing check valve is a non-return valve which operates by the swinging action of the disk. This valve is used for sizes 2" and above. There are two types of swing check valves available. They are the conventional swing check valves with flanged ends.

1. Conventional Swing check valve:

In this type of valves, the cherk mechanism is the disk which is hingert. The pressure of the fluid lifts the disk and allows the flow. The disk returns to the seat with its own weight. This allows the valve for mounting in horizontal as well as vertical position with upward fluid flow.

The main parts of the Swing check valve are –

1. Body

2. Cover

3. Hinge

4. Hinge Bracket

5. Gasket

6. Cover stud and nut

7. Disc

8. Seat Ring

9. Hinge Pin

10. Disc Pin

11. Washer

The body will be cast with a tapered wedge seat and will be provided with renewable seat rings. The wall thickness and end to end/face to face dimensions of the body shall be as per the regulatory code to which it is designed. The end flanges shall be integrally cast. The flanged connection shall be to ASME B 16.5 or any other flange standard. The disk will be attached to the body through hinge and hinge pin and swings against the same controlling the flow. The disk material shall be of quality at least equal to that of the body.