This 1" Whirlpool circulation pump screw pipe fitting is commonly used to connect a 1" PVC hose or pipe to a circulation pump.
This Whirlpool 1" pipe fitting has an outside diameter of 47mm at the front by the seal, and 1" (33.4mm) pipe and tubing can be glued directly into the fitting at the back.
The Whirlpool pipe fitting comes complete as shown in the picture with nut and gasket.
Outer diameter front with gasket: 47 mm
Inner diameter tube inlet rear: 33.4mm
Suitable adhesives and primers can be found at Adhesives & Sealants.