ProFlo replacement diaphragm check valves and diaphragms are available to convert or repair your current nozzle bodies. Choose from EPDM or Viton diaphragms and 4, 8, 12, 20, or 25 PSI spring pressure.

Easily identify the diaphragm check valve's diaphragm material and spring pressure with the color coded housing and plunger reference.

Housing Reference - indicates Diaphragm Material:

Red Button - EPDM

Green Button - Viton

Plunger Reference - indicates Spring Pressure:

Orange Plunger - 4 PSI

Black Plunger - 8 PSI

Yellow Plunger - 12 PSI

Gray Plunger - 20 PSI

Blue Plunger - 25 PSI