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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
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-1%
1 Inch Socket Union
1 Inch Socket Union
£6.81 (£5.67 Ex. VAT)
155 item(s)
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-1%
1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£6.70 (£5.58 Ex. VAT)
27 item(s)
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-27%
1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£4.21 (£3.51 Ex. VAT)
10 item(s)
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-11%
1.5 Inch Socket Union
1.5 Inch Socket Union
£12.15 (£10.12 Ex. VAT)
32 item(s)
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-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)
12 item(s)
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-15%
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.60 (£1.33 Ex. VAT)
105 item(s)
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-10%
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£3.03 (£2.52 Ex. VAT)
53 item(s)
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-20%
2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union
£43.73 (£36.44 Ex. VAT)
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-18%
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£5.17 (£4.31 Ex. VAT)
37 item(s)
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2 Inch Socket Union
2 Inch Socket Union
£15.58 (£12.98 Ex. VAT)
17 item(s)
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2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£21.82 (£18.18 Ex. VAT)
7 item(s)
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-16%
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£5.94 (£4.95 Ex. VAT)
133 item(s)
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-15%
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.20 (£1.83 Ex. VAT)
165 item(s)
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-15%
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£2.65 (£2.21 Ex. VAT)
133 item(s)
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-15%
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£5.50 (£4.58 Ex. VAT)
121 item(s)
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-2%
2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£7.01 (£5.84 Ex. VAT)
20 item(s)
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2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£13.25 (£11.04 Ex. VAT)
165 item(s)
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-18%
50mm Hydroair Pump Union
50mm Hydroair Pump Union
£4.51 (£3.76 Ex. VAT)
23 item(s)
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-12%
1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£3.85 (£3.21 Ex. VAT)
10 item(s)
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-14%
1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£4.66 (£3.88 Ex. VAT)
29 item(s)
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2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.75 (£5.62 Ex. VAT)
37 item(s)
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2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
£9.41 (£7.84 Ex. VAT)
24 item(s)
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2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
£9.53 (£7.94 Ex. VAT)
18 item(s)
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Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
£7.37 (£6.14 Ex. VAT)
30 item(s)
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-23%
Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
£6.31 (£5.26 Ex. VAT)
32 item(s)
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