Account inloggen

BISHTA - Promoting safe spa water

Balboa Approved Stockist

HydroAir Approved Stockist

Pool and Spa Scene

Pompen en Onderdelen

Find Water Jet Pumps, Circulation Pumps and Pump Parts here..

It is often confusing when sizing a pump union. All the pumps in this section are sized as per USA imperial pipe size reference. Although we refer to 2 inch, 1.5 inch and so on, often the outside diameter of the threaded connection on the inlet and the outlet of the pump will be bigger than the size referred to. The reference is related to the internal bore of the pipe work used to plumb the pump in place. See our guide below...
2.5 inch = 90mm OD, 2 inch = 75mm OD, 1.5 inch = 62mm OD, 1 inch = 48mm OD