PISTON CHECK VALVES

Piston check valves are used to protect pumps or similar equipment. They are mainly used in conjunction with globe and angle valves in piping systems where the direction of flow changes frequently. Piston check valves have a dash-pot consisting of a piston and a cylinder, which exerts a cushioning effect during operation. These valves allow flow in one direction and prevent flow reversal due to back pressure.
They provide a better pressure drop in pipelines. Piston check valves are also called lift check valves.

Piston Check Valve KRD-LCF

Standards DIN

Basic design to DIN 3356
Face-to-face acc. to DIN 3202-F1
End flange dimension acc. to EN 1092-1
Inspection & test acc. to EN 12266-1/2

Standards ISO CLASS

Basic design to BS 1868
Face-to-face acc. to ASME B16.10
End flange dimension acc. to ASME B16.5
Inspection & test acc. to API 598

Temperature

DIN: Metal seat: -10°C to 450°C
ISO CLASS: Metal seat: -29°C to 450°C

Body material

DIN: DIN 17245 GS-C25 + 13Cr
ISO CLASS: ASTM A216 WCB