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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
24 Per Page
-1%
1 Inch Socket Union
1 Inch Socket Union
£6.81
(£5.67 Ex. VAT)
-1%
1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£6.70
(£5.58 Ex. VAT)
-27%
1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£4.21
(£3.51 Ex. VAT)
-11%
1.5 Inch Socket Union
1.5 Inch Socket Union
£12.15
(£10.12 Ex. VAT)
-15%
1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£10.00
(£8.33 Ex. VAT)
-15%
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.60
(£1.33 Ex. VAT)
-10%
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£3.03
(£2.52 Ex. VAT)
-20%
2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union
£43.73
(£36.44 Ex. VAT)
-18%
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£5.17
(£4.31 Ex. VAT)
2 Inch Socket Union
2 Inch Socket Union
£15.58
(£12.98 Ex. VAT)
2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£21.82
(£18.18 Ex. VAT)
-16%
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£5.94
(£4.95 Ex. VAT)
-15%
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.20
(£1.83 Ex. VAT)
-15%
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£2.65
(£2.21 Ex. VAT)
-15%
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£5.50
(£4.58 Ex. VAT)
-2%
2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£7.01
(£5.84 Ex. VAT)
2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£13.25
(£11.04 Ex. VAT)
-18%
50mm Hydroair Pump Union
50mm Hydroair Pump Union
£4.51
(£3.76 Ex. VAT)
-12%
1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£3.85
(£3.21 Ex. VAT)
-14%
1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£4.66
(£3.88 Ex. VAT)
2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.75
(£5.62 Ex. VAT)
2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
£9.41
(£7.84 Ex. VAT)
2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
£9.53
(£7.94 Ex. VAT)
Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
£7.37
(£6.14 Ex. VAT)
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