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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
50 Per Page
1 Inch Socket Union
1 Inch Socket Union
£6.61
(Inc VAT)
1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£5.29
(Inc VAT)
1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£3.94
(Inc VAT)
1.5 Inch Socket Union
1.5 Inch Socket Union
£13.24
(Inc VAT)
1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£9.23
(Inc VAT)
1.5 inch Socket Union (with Female Thread)
1.5 inch Socket Union (with Female Thread)
£12.37
(Inc VAT)
1.5 inch Threaded Nipple
1.5 inch Threaded Nipple
£4.14
(Inc VAT)
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.46
(Inc VAT)
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£2.64
(Inc VAT)
2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union (Sold in Pairs)
£42.67
(Inc VAT)
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£4.98
(Inc VAT)
2 Inch Socket Union
2 Inch Socket Union
£12.96
(Inc VAT)
2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£17.72
(Inc VAT)
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£5.14
(Inc VAT)
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.03
(Inc VAT)
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£2.45
(Inc VAT)
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£9.22
(Inc VAT)
2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£4.84
(Inc VAT)
2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£6.24
(Inc VAT)
3"_Saratoga/Jacuzzi_Heater_Union_Complete 3"_Saratoga/Jacuzzi_Heater_Union_Complete
3" Saratoga & Jacuzzi Heater Union Complete
Now Discontinued
50mm Hydroair Pump Union
50mm Hydroair Pump Union
£4.33
(Inc VAT)
ESPA Pump Union (IRIS)
ESPA Pump Union (IRIS)
Now Discontinued
ESPA Pump Union (WIPER0)
ESPA Pump Union (WIPER0)
£11.20
(Inc VAT)
ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
£15.12
(Inc VAT)
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
£5.46
(Inc VAT)
-10%
Marquis Spas 2 Inch 45 Vico Pump Union
Marquis Spas 2 Inch 45 Vico Pump Union
£7.54
£8.38
(Inc VAT)
Marquis Spas 2 Inch Heater Union Tailpiece
Marquis Spas 2 Inch Heater Union Tailpiece
£12.36
(Inc VAT)
Marquis Spas 2 Inch Pump Union Split Nut with Screws
Marquis Spas 2 Inch Pump Union Split Nut with Screws
£36.64
(Inc VAT)
Marquis Spas 2 Inch Split Heater Nut with Screws
Marquis Spas 2 Inch Split Heater Nut with Screws
£12.88
(Inc VAT)
1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£3.41
(Inc VAT)
1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£4.24
(Inc VAT)
2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.13
(Inc VAT)
2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
£8.69
(Inc VAT)
2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
£8.69
(Inc VAT)
Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
£6.80
(Inc VAT)
Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
£7.97
(Inc VAT)