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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
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1 Inch Socket Union
1 Inch Socket Union
£7.21 (£6.01 Ex. VAT)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£7.12 (£5.93 Ex. VAT)
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1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£6.10 (£5.08 Ex. VAT)
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1.5 Inch Socket Union
1.5 Inch Socket Union
£14.36 (£11.97 Ex. VAT)
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1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£12.35 (£10.29 Ex. VAT)
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1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.97 (£1.64 Ex. VAT)
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1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£3.54 (£2.95 Ex. VAT)
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2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union (Sold in Pairs)
£57.19 (£47.66 Ex. VAT)
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2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£6.18 (£5.15 Ex. VAT)
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2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£19.25 (£16.04 Ex. VAT)
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Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£7.42 (£6.18 Ex. VAT)
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2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.72 (£2.27 Ex. VAT)
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2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£3.29 (£2.74 Ex. VAT)
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2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£6.79 (£5.66 Ex. VAT)
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2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£7.49 (£6.24 Ex. VAT)
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2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£8.38 (£6.98 Ex. VAT)
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50mm Hydroair Pump Union
50mm Hydroair Pump Union
£5.47 (£4.56 Ex. VAT)
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ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
£20.24 (£16.87 Ex. VAT)
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Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
£4.96 (£4.13 Ex. VAT)
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1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£4.57 (£3.81 Ex. VAT)
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1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£5.69 (£4.74 Ex. VAT)
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2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.58 (£5.48 Ex. VAT)
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2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
£9.32 (£7.77 Ex. VAT)
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2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
£9.32 (£7.77 Ex. VAT)
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Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
£7.30 (£6.08 Ex. VAT)
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Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
£8.57 (£7.14 Ex. VAT)
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