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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.

33 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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134 item(s)
HTP1581
£721 (£601 Ex. VAT)
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85 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)
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39 item(s)
HTP552
£610 (£508 Ex. VAT)
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26 item(s)
HTP83
£1436 (£1197 Ex. VAT)
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9 item(s)
HTP230
£1235 (£1029 Ex. VAT)
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61 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
£354 (£295 Ex. VAT)
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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)
2" HA440 Pump Union -2%
47 item(s)
HTP118
£618 (£515 Ex. VAT) £525
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134 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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5 item(s)
HTP1583
£1925 (£1604 Ex. VAT)
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128 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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30 item(s)
HTP1405

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

£679 (£566 Ex. VAT)
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97 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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45 item(s)
HTP551
£547 (£456 Ex. VAT) £457
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HTP1246
£1501 (£1251 Ex. VAT)
18 item(s)
HTP1245
£2024 (£1687 Ex. VAT)
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12 item(s)
HTP414

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

£457 (£381 Ex. VAT)
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11 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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58 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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9 item(s)
HTP256

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

£932 (£777 Ex. VAT)
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11 item(s)
HTP257

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

£932 (£777 Ex. VAT)
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8 item(s)
HTP291

2" 45 degree elbow pump union, sold individually.

£730 (£608 Ex. VAT)
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49 item(s)
HTP255

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

£857 (£714 Ex. VAT)
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