Multiquip 338030000 Diaphragm - OEM Replacement Part

The diaphragm is a critical pumping component in the MQD2HA diaphragm pump that creates the suction and discharge action required for water transfer operations. Protected by the plunger guard, this diaphragm works in conjunction with the connecting rod and waterbox to move water through the pump system. Regular inspection of this component is essential, as diaphragm failure can result from suction hose leaks, improper installation, or wear over time.

According to Multiquip service documentation, the diaphragm assembly should be checked when troubleshooting issues such as loss of prime, reduced discharge pressure, or pump failure to move water. The connecting rod bearing that drives the diaphragm requires greasing every 25 hours of operation - access is gained by removing the plunger guard. Suction leaks at the inlet can prevent proper priming and accelerate diaphragm wear, so all hose connections should be verified for tightness during maintenance intervals.

Compatible with:

• MQD2HA Diaphragm Pump

Genuine Multiquip OEM part, sold by an authorized dealer.