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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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1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£3.65 (£3.04 Ex. VAT)
50 item(s)
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2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£6.36 (£5.30 Ex. VAT)
30 item(s)
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2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
£9.60 (£8.00 Ex. VAT)
14 item(s)
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1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£4.70 (£3.92 Ex. VAT)
12 item(s)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£7.33 (£6.11 Ex. VAT)
31 item(s)
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Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
£8.82 (£7.35 Ex. VAT)
35 item(s)
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1 Inch Socket Union
1 Inch Socket Union
£7.43 (£6.19 Ex. VAT)
106 item(s)
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1.5 Inch Socket Union
1.5 Inch Socket Union
£14.80 (£12.33 Ex. VAT)
41 item(s)
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Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
£7.51 (£6.26 Ex. VAT)
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50mm Hydroair Pump Union
50mm Hydroair Pump Union
£5.64 (£4.70 Ex. VAT)
43 item(s)
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ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
£20.86 (£17.38 Ex. VAT)
16 item(s)
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1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£12.72 (£10.60 Ex. VAT)
3 item(s)
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