Valve Kit for AR30 and AR40 AR North America Diaphragm Pumps.  
The kit Includes a full set of check valve assemblies and the o-rings for the seat of the valve. If your pump is not drawing water or the flow is irregular your valves may need to be replaced. If your pump is in constant use, we recommend changing these parts out every 3 months or 500 hours of operation.
Includes:
Qty 4  Check Valve Assembly
Qty 4  620030 O-rings
 
AR30 Parts Diagram
AR30 / Honda GX160 With Parts Diagram