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Unions

Unions

Welcome to the pipe unions section of our store.

We stock all sizes of spa pipe plumbing unions such as heater unions, socket unions, pump unions 1 inch, 1.5 inch, 2 inch, and 2.5 inch along with all other types and sizes designed to fit Aqua-flo, Hydroair, LX and Waterway hot tub pumps.

Here is a quick guide to the approximate outside thread diameters of pump connections,

1.5" unions: 63 mm OD, 2" unions: 78 mm OD, 2.5" unions: 93 mm OD.
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2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
140 item(s)
HTP1797

Threads onto a 1.5" pump wet end and provides a 2" union connection.

£749 (£624 Ex. VAT)
+ −
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Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
12 item(s)
HTP117
2" Balboa Heater Union Collar & Tail Piece These are complete unions for Balboa Heaters.   Supplied With ~ 2" White split union collar with screws ~ 2" Plumbing tail piece for gluing onto 2" pipework. (2" pipe - 60mm) ~ O' Ring gasket   Need Help? If you need any advice on spa or hot tub plumbing or heating parts please do not hesitate in giving our office a call on 01342 717982 or by emailing us , our team have years of experience in the repair and manufacture of spas and will be more tha happy to help.
£742 (£618 Ex. VAT)
+ −
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1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
34 item(s)
HTP311

1.5" pump union found on spas and hot tubs, fits most brands of pump. sold individually.

£569 (£474 Ex. VAT)
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2" HA440 Pump Union -2%
2" HA440 Pump Union
40 item(s)
HTP118
£618 (£515 Ex. VAT) £525
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Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
39 item(s)
HTP255

2" 90 degree swept elbow pump union, sold individually.

£857 (£714 Ex. VAT)
+ −
Add to cart
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
131 item(s)
HTP1405

Perfect for repairing a cracked spa pump union nut, fits all 2" pump wet end connections.

£679 (£566 Ex. VAT)
+ −
Add to cart
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
72 item(s)
HTP252
2" Heater Union Tail Piece These 2 inch heater union tail pieces are plumbed on to the end of 2 inch pipe work. Enabling you to connect and seal a 2 inch metal spa heater assembly to the pipe work with the addition of a split collar and O'ring gasket. Internal pipe connection - 2" (60mm) Outside thread diameter - 78mm
£272 (£227 Ex. VAT)
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Add to cart
2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
30 item(s)
HTP172

The most common 2" pump union found on spas and hot tubs, sold individually.

£658 (£548 Ex. VAT)
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1" Socket Union
1" Socket Union
118 item(s)
HTP1581
£721 (£601 Ex. VAT)
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Add to cart
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
66 item(s)
HTP251
2" Split Heater Union Nut These 2 inch split heater unions nuts come complete with screws. Can be used to replace 2 inch unions from spa heater brands such as Balboa, Gecko, Hydroquip, Spa Builders. Inside thread diameter - 78mm
£329 (£274 Ex. VAT)
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1"_Hydroair_Union_Complete
1" Hydroair Union Complete - Genesis Air Blowers
31 item(s)
HTP547

Hydroair union nut and tail piece, fits all their Genesis and perseus range of air blowers.

£712 (£593 Ex. VAT)
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Add to cart
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
75 item(s)
HTP674
1.5" Heater Union Tail Piece These 1.5 inch heater union tail pieces are plumbed on to the end of 1.5 inch pipe work. Enabling you to connect and seal a 1.5 inch metal spa heater assembly to the pipe work with the addition of a split collar and O'Ring gasket. Internal pipe connection - 1.5" (48.5mm) External thread diameter -  63mm
£197 (£164 Ex. VAT)
+ −
Add to cart
2.5"_Pump_Union_With_2"_Socket
Pump Union 2.5" x 2" Socket
24 item(s)
HTP256

2.5" pump union for the larger Waterway wet end suctions, sold individually.

£932 (£777 Ex. VAT)
+ −
Add to cart
Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
HTP291

2" 45 degree elbow pump union, sold individually.

£730 (£608 Ex. VAT)
Out of stock
2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
14 item(s)
HTP257

2.5" pump union for the larger Waterway wet end suctions, sold individually.

£932 (£777 Ex. VAT)
+ −
Add to cart
1.5" Hydroair Pump Union
1.5" Hydroair Pump Union
33 item(s)
HTP552
£610 (£508 Ex. VAT)
+ −
Add to cart
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