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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
Newest Items First
12 Per Page
1.5 Inch Socket Union
1.5 Inch Socket Union
£14.36 (£11.97 Ex. VAT)
47 item(s)
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-2%
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£6.18 (£5.15 Ex. VAT)
45 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)
£12.35 (£10.29 Ex. VAT)
7 item(s)
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50mm Hydroair Pump Union
50mm Hydroair Pump Union
£5.47 (£4.56 Ex. VAT)
44 item(s)
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1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£6.10 (£5.08 Ex. VAT)
35 item(s)
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ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
£20.24 (£16.87 Ex. VAT)
18 item(s)
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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)
2 item(s)
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2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£8.38 (£6.98 Ex. VAT)
95 item(s)
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1 Inch Socket Union
1 Inch Socket Union
£7.21 (£6.01 Ex. VAT)
130 item(s)
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2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£19.25 (£16.04 Ex. VAT)
5 item(s)
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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)
14 item(s)
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1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£5.69 (£4.74 Ex. VAT)
32 item(s)
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