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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
Sort Alphabetically: A to Z
50 Per Page
1 Inch Socket Union
1 Inch Socket Union
€8.20 (€6.83 Ex. VAT)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
€8.08 (€6.74 Ex. VAT)
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-23%
1.5 Inch Hydroair Pump Union
1.5 Inch Hydroair Pump Union
€5.12 (€4.27 Ex. VAT)
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-3%
1.5 Inch Socket Union
1.5 Inch Socket Union
€15.23 (€12.69 Ex. VAT)
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-11%
1.5 inch Socket Union (M Thread to F Socket)
1.5 inch Socket Union (M Thread to F Socket)
€12.06 (€10.05 Ex. VAT)
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-10%
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
€1.93 (€1.61 Ex. VAT)
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-6%
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
€3.65 (€3.04 Ex. VAT)
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-16%
2 Inch Davey Pump/Heater Union (Sold in Pairs)
2 Inch Davey Pump/Heater Union
€52.35 (€43.62 Ex. VAT)
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-14%
2 Inch HA440 Pump Union
2 Inch HA440 Pump Union
€6.20 (€5.16 Ex. VAT)
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2 Inch Socket Union
2 Inch Socket Union
€18.55 (€15.46 Ex. VAT)
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2 Inch Socket Union (with Female Thread)
2 Inch Socket Union (with Female Thread)
€25.99 (€21.66 Ex. VAT)
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-12%
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
€7.15 (€5.96 Ex. VAT)
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-11%
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
€2.66 (€2.21 Ex. VAT)
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-11%
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
€3.21 (€2.67 Ex. VAT)
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-11%
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
€6.60 (€5.50 Ex. VAT)
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2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
€8.56 (€7.14 Ex. VAT)
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2" to 2.5" Face Plate Adapter
2" to 2.5" Face Plate Adapter
€10.35 (€8.62 Ex. VAT)
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-14%
50mm Hydroair Pump Union
50mm Hydroair Pump Union
€5.43 (€4.52 Ex. VAT)
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-7%
1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
€4.66 (€3.88 Ex. VAT)
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-10%
1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
€5.58 (€4.65 Ex. VAT)
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2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
€8.06 (€6.71 Ex. VAT)
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2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
€11.37 (€9.47 Ex. VAT)
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2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
€11.39 (€9.50 Ex. VAT)
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Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
€8.90 (€7.42 Ex. VAT)
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-13%
Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
€8.21 (€6.84 Ex. VAT)
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