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Pipe Unions

Pipe Unions

Plumbing Unions

This category contains all the unions used on a hot tub and spas plumbing. We stock a wide range of replacement plumbing unions, socket unions, split unions, unions for many brands of pumps, heaters and air blowers.

A quick guide to unions & measurements

Split Unions - Used for heaters and can be used for when a pump union collar has cracked.

1" Unions - Connect onto pumps or heaters with a 50mm thread diameter
1.5" Unions - Connect onto pumps or heaters with a 62mm thread diameter
2" Unions - Connect onto pumps or heaters with a 78mm thread diameter

2.5" Pump Unions - Connect onto pumps with a 90mm thread diameter
Sort Alphabetically: A to Z
16 Per Page
1 Inch Socket Union
1 Inch Socket Union
£7.13 (£5.94 Ex. VAT)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£7.03 (£5.86 Ex. VAT)
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-23%
1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£4.45 (£3.71 Ex. VAT)
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-3%
1.5 Inch Socket Union
1.5 Inch Socket Union
£13.25 (£11.04 Ex. VAT)
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-11%
1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£10.49 (£8.74 Ex. VAT)
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-10%
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.68 (£1.40 Ex. VAT)
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-6%
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£3.17 (£2.64 Ex. VAT)
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-16%
2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union
£45.54 (£37.95 Ex. VAT)
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Out of Stock
-14%
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£5.39 (£4.49 Ex. VAT)
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2 Inch Socket Union
2 Inch Socket Union
£16.14 (£13.45 Ex. VAT)
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2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£22.61 (£18.84 Ex. VAT)
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-12%
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£6.22 (£5.18 Ex. VAT)
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-11%
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.31 (£1.92 Ex. VAT)
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-11%
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£2.79 (£2.32 Ex. VAT)
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-11%
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£5.74 (£4.78 Ex. VAT)
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2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£7.45 (£6.21 Ex. VAT)
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