Replacement diaphragm (last frame) for the Precision Controls PF Series solenoid metering pump. Compatible with all PF models: PF20, PF30, PF60, and HF160, in both 115V and 230V configurations.
This is the wear component that flexes with every pump stroke; replacing it restores full output and pressure on a pump that's lost prime, is under-dosing, or is leaking at the pump head.
