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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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Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
£8.82 (£7.35 Ex. VAT)
38 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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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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2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
£9.60 (£8.00 Ex. VAT)
24 item(s)
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2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.77 (£5.64 Ex. VAT)
27 item(s)
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1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£5.86 (£4.88 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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Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
£5.10 (£4.25 Ex. VAT)
14 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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50mm Hydroair Pump Union
50mm Hydroair Pump Union
£5.64 (£4.70 Ex. VAT)
43 item(s)
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2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£8.63 (£7.19 Ex. VAT)
88 item(s)
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2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£7.72 (£6.43 Ex. VAT)
140 item(s)
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