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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
Oldest Items First
12 Per Page
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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2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.77 (£5.64 Ex. VAT)
23 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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2.5_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"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£7.00 (£5.83 Ex. VAT)
100 item(s)
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1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£2.03 (£1.69 Ex. VAT)
49 item(s)
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2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.81 (£2.34 Ex. VAT)
61 item(s)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£7.33 (£6.11 Ex. VAT)
30 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)
8 item(s)
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Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£7.64 (£6.37 Ex. VAT)
2 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)
30 item(s)
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2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£3.38 (£2.82 Ex. VAT)
53 item(s)
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