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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 Inch Socket Union
1 Inch Socket Union
£7.06 (£5.88 Ex. VAT)
28 item(s)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
£5.65 (£4.71 Ex. VAT)
46 item(s)
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1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
£4.20 (£3.50 Ex. VAT)
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1.5 Inch Socket Union
1.5 Inch Socket Union
£14.12 (£11.77 Ex. VAT)
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1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
£9.85 (£8.21 Ex. VAT)
50 item(s)
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1.5 inch Socket Union (with Female Thread)
1.5 inch Socket Union (with Female Thread)
£13.21 (£11.01 Ex. VAT)
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1.5 inch Threaded Nipple
1.5 inch Threaded Nipple
£4.42 (£3.68 Ex. VAT)
36 item(s)
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1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
£1.92 (£1.60 Ex. VAT)
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1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
£2.82 (£2.35 Ex. VAT)
62 item(s)
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2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union (Sold in Pairs)
£45.55 (£37.96 Ex. VAT)
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2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
£5.32 (£4.43 Ex. VAT)
48 item(s)
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2 Inch Socket Union
2 Inch Socket Union
£13.84 (£11.53 Ex. VAT)
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2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
£18.92 (£15.77 Ex. VAT)
6 item(s)
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Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
£5.48 (£4.57 Ex. VAT)
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2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
£2.64 (£2.20 Ex. VAT)
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2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
£3.58 (£2.98 Ex. VAT)
109 item(s)
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2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
£5.40 (£4.50 Ex. VAT)
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2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
£5.16 (£4.30 Ex. VAT)
214 item(s)
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2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
£6.66 (£5.55 Ex. VAT)
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3"_Saratoga/Jacuzzi_Heater_Union_Complete 3"_Saratoga/Jacuzzi_Heater_Union_Complete
3" Saratoga & Jacuzzi Heater Union Complete
Now Discontinued
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50mm Hydroair Pump Union
50mm Hydroair Pump Union
£4.62 (£3.85 Ex. VAT)
3 item(s)
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ESPA Pump Union (IRIS)
ESPA Pump Union (IRIS)
Now Discontinued
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ESPA Pump Union (WIPER0)
ESPA Pump Union (WIPER0)
£11.95 (£9.96 Ex. VAT)
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ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
£16.14 (£13.45 Ex. VAT)
35 item(s)
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Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
Marquis Spas 1.5" Heater Union Tailpiece (Male Slip)
£5.76 (£4.80 Ex. VAT)
50 item(s)
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-10%
Marquis Spas 2 Inch 45 Vico Pump Union
Marquis Spas 2 Inch 45 Vico Pump Union
£7.97 (£6.64 Ex. VAT)
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Marquis Spas 2 Inch Heater Union Tailpiece
Marquis Spas 2 Inch Heater Union Tailpiece
£13.20 (£11.00 Ex. VAT)
19 item(s)
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Marquis Spas 2 Inch Pump Union Split Nut with Screws
Marquis Spas 2 Inch Pump Union Split Nut with Screws
£39.11 (£32.59 Ex. VAT)
14 item(s)
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Marquis Spas 2 Inch Split Heater Nut with Screws
Marquis Spas 2 Inch Split Heater Nut with Screws
£13.74 (£11.45 Ex. VAT)
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1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
£3.64 (£3.03 Ex. VAT)
6 item(s)
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1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
£4.52 (£3.77 Ex. VAT)
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2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
£6.54 (£5.45 Ex. VAT)
208 item(s)
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2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
£9.28 (£7.73 Ex. VAT)
27 item(s)
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2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
£9.28 (£7.73 Ex. VAT)
55 item(s)
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Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
£7.26 (£6.05 Ex. VAT)
45 item(s)
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Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
£8.51 (£7.09 Ex. VAT)
35 item(s)
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