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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.

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
30 Per Page
-10%
1 Inch Socket Union
1 Inch Socket Union
£4.90
£5.45
(Inc VAT)
-10%
1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£4.99
£5.54
(Inc VAT)
-10%
1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£4.69
£5.21
(Inc VAT)
-10%
1.5 Inch Socket Union
1.5 Inch Socket Union
£9.73
£10.81
(Inc VAT)
-10%
1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£8.57
£9.52
(Inc VAT)
-10%
1.5 inch Socket Union (with Female Thread)
1.5 inch Socket Union (with Female Thread)
£11.13
£12.37
(Inc VAT)
-10%
1.5 inch Threaded Nipple
1.5 inch Threaded Nipple
£3.06
£3.40
(Inc VAT)
-10%
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.36
£1.51
(Inc VAT)
-10%
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£2.45
£2.72
(Inc VAT)
2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union (Sold in Pairs)
Now Discontinued
-10%
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£4.69
£5.21
(Inc VAT)
-10%
2 Inch Socket Union
2 Inch Socket Union
£9.51
£10.57
(Inc VAT)
-10%
2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£14.36
£15.96
(Inc VAT)
-10%
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£4.61
£5.12
(Inc VAT)
-10%
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£1.88
£2.09
(Inc VAT)
-10%
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£2.28
£2.53
(Inc VAT)
-10%
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£4.70
£5.22
(Inc VAT)
-10%
2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£4.33
£4.81
(Inc VAT)
-10%
2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£5.79
£6.43
(Inc VAT)
3"_Saratoga/Jacuzzi_Heater_Union_Complete 3"_Saratoga/Jacuzzi_Heater_Union_Complete
3" Saratoga & Jacuzzi Heater Union Complete
Now Discontinued
-10%
50mm Hydroair Pump Union
50mm Hydroair Pump Union
£4.09
£4.55
(Inc VAT)
ESPA Pump Union (IRIS)
ESPA Pump Union (IRIS)
Now Discontinued
-10%
ESPA Pump Union (WIPER0)
ESPA Pump Union (WIPER0)
£10.08
£11.20
(Inc VAT)
-10%
ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
£13.61
£15.12
(Inc VAT)
-10%
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
£3.93
£4.37
(Inc VAT)
-10%
Marquis Spas 2 Inch 45 Vico Pump Union
Marquis Spas 2 Inch 45 Vico Pump Union
£6.79
£7.55
(Inc VAT)
-10%
Marquis Spas 2 Inch Heater Union Tailpiece
Marquis Spas 2 Inch Heater Union Tailpiece
£10.86
£12.07
(Inc VAT)
-10%
Marquis Spas 2 Inch Pump Union Split Nut with Screws
Marquis Spas 2 Inch Pump Union Split Nut with Screws
£32.19
£35.77
(Inc VAT)
-10%
Marquis Spas 2 Inch Split Heater Nut with Screws
Marquis Spas 2 Inch Split Heater Nut with Screws
£12.46
£13.84
(Inc VAT)
-10%
1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£3.17
£3.52
(Inc VAT)
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