Robust Class 800 A105 Forged Steel Piston Check valve from 1/2" to 2" NPT. Suitable for pressures up to 136 Bar depending upon temperature (see chart below) and media type. Suitable for use across Petrochemical, Steam, Mining and Industrial applications. Designed to API602 with NPT ends to ASME B1.20.1 and tested to API598.

Model Size (NPT) Design Pressure Media Temperature Weight (kg)
PCF8-04 1/2" 13.62 MPa @ -29°C ~ 35°C 454°C @ 5.5 MPa 1.5
PCF8-05 3/4" 1.7
PCF8-06 1" 3.3
PCF8-07 1 1/4" 4.2
PCF8-08 1 1/2" 4.5
PCF8-09 2" 8.5

Class 800 Forged Steel Piston Check Valve

Model Size (NPT) L H d
PCF8-04 1/2" 79 61 9
PCF8-05 3/4" 92 61 13
PCF8-06 1" 111 78 17.5
PCF8-07 1 1/4" 120 84 23
PCF8-08 1 1/2" 152 84 30
PCF8-09 2" 172 118 35

All sizes are in mm unless shown otherwise. 

Class 800 Forged Steel Piston Check Valve Construction

Number Part Name Material
1 Body ASTM A105
2 Seat Deposited 13Cr
3 Disc ASTM A276-420
4 Spring SS304
5 Gasket Flexible Graphite/304
6 Bonnet ASTM A105
7 Bonnet Bolt ASTM A193 Gr.B7

Size 1/2" to 2" NPT
Body Forged Steel
Seat Deposited 13Cr
Pressure Range 0 to 150 BAR
Temperature 20°C to 180°C

Product History