Waterway Pump Unions with O-rings (Pair)

Pump Union Assemblies available in 1.5, 2 and 2.5 inch. Sold as a pair, includes o-ring gaskets.

Determine the pump union size by measuring the outside to outside thread on the pump wet end. A 1.5 inch pump union assembly has a 1.5 inch pipe slip connection and a 2.5 inch union nut. A 2 inch pump union assembly has a 2 inch pipe slip connection and a 3 inch union nut. A 2.5 inch pump union assembly has a 2.5 inch pipe slip connection and a 3.5 inch union nut. Pump union nuts use buttress threading.

For smaller pipe connection on a pump union, use reducers.