Wafer type Double Disc/Piston lift Check Valve-Installation, Operation and Maintenance Manual

Valve type
Wafer type check valve: double disc check valve, piston lift check valve

Usage and Feature
1. Usages
Series check valves are used in oilfield, chemical-industrial, power-station for checking the flow-backward of the material in the pipe.
2. Features

Type

Nominal

pressure

Strength testing  pressure

High-pressure

Sealing testing

Pressure

Low-pressure

Sealing testing

Pressure

Temperature

Range

Applicable medium

H2a3AR

1.6MPa

2.4Mpa

1.76MPa

Non

CC10

≤425°C

Water, oil

H3a3AR

2.5MPa

3.75MPa

2.75MPa

CA23

≤540°C

steam

H4a3AR

4.0MPa

6.0MPa

4.4MPa

H5a3AR

6.4MPa

9.6MPa

7.04MPa

CS34

≤316°C

150Lb

3.03 MPa

2.2MPa

300Lb

7.78MPa

5.78Mpa

≤425°C

Working theory and configuration direction
1. Series check valve are designed and made under standard API594 and JB/T7746, tested under standard API598,JB/T9092.
2. The disc opens under the pressure of the liquid, the liquid flow from the inlet to the outlet. Continue reading “Wafer type Double Disc/Piston lift Check Valve-Installation, Operation and Maintenance Manual”