Can piston check valves be installed in the vertical position?
When installing the piston check valve in vertical piping, the valve should be installed with the arrow on the body facing the direction of flow.
Detailed Information
Piston Check valve
The seat design of a Piston or Lift-check valve is similar to a globe valve. The disc is usually in the form of a piston or a ball. Flow to piston check valves must always enter below the seat. As the flow enters, the piston or ball is raised within guides from the seat by the pressure of the upward flow...