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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.
Sort Alphabetically: A to Z
50 Per Page
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.

€833 (€694 Ex. VAT)
+ −
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1" Socket Union
1" Socket Union
130 item(s)
HTP1581
€843 (€703 Ex. VAT)
+ −
Add to cart
1.5"_Heater_Union_Tail_Peice
1.5" Heater Union Tail Piece
78 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
€230 (€192 Ex. VAT)
+ −
Add to cart
1.5" Hydroair Pump Union
1.5" Hydroair Pump Union
34 item(s)
HTP552
€713 (€594 Ex. VAT)
+ −
Add to cart
1.5" Socket Union
1.5" Socket Union
48 item(s)
HTP83
€1680 (€1400 Ex. VAT)
+ −
Add to cart
1.5" Socket Union (M Thread to F Socket)
1.5" Socket Union (M Thread to F Socket)
7 item(s)
HTP230
€1444 (€1204 Ex. VAT)
+ −
Add to cart
1.5"_Split_Heater_Union_Nut
1.5" Split Heater Union Nut
55 item(s)
HTP285
1.5" Split Heater Union Nut These 1.5 inch split heater unions nuts come complete with screws. Can be used to replace 1.5 inch unions from spa heater brands such as Balboa, Chinese LX and many more. Inside thread diameter - 62mm
€414 (€345 Ex. VAT)
+ −
Add to cart
Balboa_Heater_Union_Complete
2" Balboa Heater Union Collar & Tail Piece
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.
€868 (€723 Ex. VAT)
Out of stock
2" HA440 Pump Union -2%
2" HA440 Pump Union
45 item(s)
HTP118
€723 (€602 Ex. VAT) €614
+ −
Add to cart
2"_Heater_Union_Tail_Peice
2" Heater Union Tail Piece
111 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
€318 (€265 Ex. VAT)
+ −
Add to cart
2" Socket Union (with Female Thread)
2" Socket Union (with Female Thread)
5 item(s)
HTP1583
€2251 (€1876 Ex. VAT)
+ −
Add to cart
2"_Split_Heater_Union_Nut
2" Split Heater Union Nut
109 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
€385 (€320 Ex. VAT)
+ −
Add to cart
2"_Split_Pump_Union_Nut
2" Split Pump Union Nut
80 item(s)
HTP1405

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

€794 (€662 Ex. VAT)
+ −
Add to cart
2" to 1.5" Threaded Union Adapter
2" to 1.5" Threaded Union Adapter
141 item(s)
HTP1797

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

€876 (€730 Ex. VAT)
+ −
Add to cart
50mm Hydroair Pump Union
50mm Hydroair Pump Union
44 item(s)
HTP551
€640 (€533 Ex. VAT) €535
+ −
Add to cart
ESPA Pump Union (WIPER0)
ESPA Pump Union (WIPER0)
HTP1246
€1756 (€1463 Ex. VAT)
Out of stock
ESPA Pump Union (WIPER3)
ESPA Pump Union (WIPER3)
18 item(s)
HTP1245
€2367 (€1973 Ex. VAT)
+ −
Add to cart
1"_Spa_Pump_Union
Pump Union 1"x 1" Socket
12 item(s)
HTP414

1" pump union found on spas and hot tubs, fits Waterway Tiny Might pumps and others. Sold individually.

€535 (€446 Ex. VAT)
+ −
Add to cart
1.5"_Spa_Pump_Union
Pump Union 1.5"x 1.5" Socket
32 item(s)
HTP311

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

€665 (€554 Ex. VAT)
+ −
Add to cart
2-Inch_Spa_Pump_Union
Pump Union 2"x 2" Socket
33 item(s)
HTP172

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

€770 (€641 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.

€1090 (€909 Ex. VAT)
+ −
Add to cart
2.5_Inch_Spa_Pump_Union
Pump Union 2.5" x 2.5" Socket
17 item(s)
HTP257

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

€1090 (€909 Ex. VAT)
+ −
Add to cart
Waterway_2"_45_Degree_Male_Pump_Union
Waterway 2" 45 Degree Male Pump Union
5 item(s)
HTP291

2" 45 degree elbow pump union, sold individually.

€854 (€711 Ex. VAT)
+ −
Add to cart
Waterway_2"_90_Degree_Swept_Pump_Union
Waterway 2" 90 Degree Swept Pump Union
45 item(s)
HTP255

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

€1002 (€835 Ex. VAT)
+ −
Add to cart
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