The following images are to help people to get the correct size connections for their hot tub and spa pumps, please note the threads are all imperial threads and classed as standard.
None standard fitting are Australian pumps, French (sirem) pumps and some Italian pumps.
Note* Motors are available to fit Australian pumps.
Link to buy hot tub and spa pump unions: Hot Tub Pump Unions
Link to Buy Hot Tub Pump Wet Ends: Hot Tub Pump Wet Ends
Pump Wet End Sizes
Typical 1.5” Plumbing Fittings
Dimensions:
Suction - Connection Width: 6.1mm
Return - Connection Width: 6.1mm
Description:
Notice the center suction and right hand return, it is also possible to have center returns as well.
Be careful not to confuse with metric connections
Self Drain Wet End
Typical 1.5” Plumbing Fittings
Dimensions:
Suction - Connection Width: 6.1mm
Return - Connection Width: 6.1mm
Description:
Notice the lower suction and center hand return, it is also possible to have right hand returns as well.
Be careful not to confuse with metric connections
Typical 2” Plumbing Fittings
Dimensions:
Suction - Connection Width: 7.6mm
Return - Connection Width: 7.6mm
Description:
Be careful not to confuse with metric connections.
2 5/8” Suction and 2" Return Wet End
Dimensions:
Suction - Connection Width: 9.3mm
Return - Connection Width: 7.6mm
Description:
Be careful not to confuse with metric connections.
