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Hot Tub Part guide on:

Hot Tub Pump Unions

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.

This guide was written by Jon Pennington @ Hot Tub Help Ltd for the Website www.hottubdiy.co.uk.

Please note all Hot tub Parts sold are UK Spec, which means designed for 230 V at 50Hz

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