Macewan H1 Piston Pump

Macewan H1 Piston Pump Parts

Below is an exploded diagram of the pump. we also have a download that includes the exploded diagram and some other information on the Macewan H series.

Please note: there are two styles of Valve Assemblies in the H series of pumps.

The Standard model will have:
– Valve Rubbers (H1/621)
– Valve Plates (H1/622)
– Valve Springs (H1/624) 
– Valve Posts (H1/625) 

The High Pressure model has a Valve Poppet Assembly, which is a Brass Seat and a Brass Valve. The High Pressure model is shown in the below diagram.