Spare Parts TYP 1987

AR 503 Valves Kit pos. 44/45/46

Valves kit for the AR 503 pump, positions 44, 45 and 46 on the parts diagram. New valves cure the usual symptoms of worn ones: pulsing pressure, reduced output and a pump that takes long to prime. Fit them with new O-rings from kit TYP 1984, and the BlueFlex diaphragms kit TYP 43198 if those are due.