Lift (piston) check valve

ISO 10628-2 (group 22, check valves) / PIP PIC001

Drawn as

Bow-tie with the outlet triangle filled and an open circle (the piston or disc) where the tips meet, with a flow arrow above.

Meaning

Globe-pattern check valve with a piston or disc that lifts off its seat. Good for high pressure, small bore and pulsating flow (reciprocating pumps and compressors).

Variants

Some legends draw a globe-valve body with an arrow
Look-alike: ball check (ball in front of a seat bar), stop-check (adds a handwheel)