Hot Tub & Spa - Hot Tub Pump Unions

Pump unions are typically made of PVC and make it easier to remove the pump when servicing the hot tub. They connect the pump suction and discharge to the spa's pipework.

The union fittings make for quicker & easier connection and disconnection of components. They comprise a female socket for glueing your pipe into and a female threaded collar that is screwed (hand tight) with an o-ring on to the pump.

For help working out which union size and type you need watch our useful video here.

Need help? Ask us a question

Pump unions are typically made of PVC and make it easier to remove the pump when servicing the hot tub. They connect the pump suction and discharge to the spa's pipework.

The union fittings make for quicker & easier connection and disconnection of components. They comprise a female socket for glueing your pipe into and a female threaded collar that is screwed (hand tight) with an o-ring on to the pump.

For help working out which union size and type you need watch our useful video here.

Need help? Ask us a question

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  • Balboa Pump Union
  • Fits 1.5" Buttress threads (63mmŲ)
  • 50mm Socket
  • Use with 50mm pipework & connections
  • Includes O-ring
In stock 89 in stock
In stock Same day dispatch on orders before 15:00
£3.33
Saving: £0.12
Collar = 1.5 " (Known As)
Buttress Thread
Tailpiece = 50 mm
O-Ring Included
  • Balboa Pump Union
  • Fits 1.5" Buttress threads (63mmŲ)
  • 1.5" Socket
  • Use with 1.5" pipework & connections
  • Includes O-ring
In stock 9 in stock
In stock Same day dispatch on orders before 15:00
In stock More stock (20) on order
£2.91
 
Collar = 1.5 " (Known As)
Buttress Thread
Tailpiece = 1.5" (Known As)
O-Ring Included
  • Balboa Pump Union
  • Fits 2.0" Buttress threads (79mmŲ)
  • 2.0" Socket
  • Use with 2.0" pipework & connections
  • Includes O-ring
In stock 18 in stock
In stock Same day dispatch on orders before 15:00
£4.16
Saving: £0.35
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • Balboa Pump Union
  • Fits 1.5" BSP threads (63mmŲ)
  • 1.5" Socket
  • Use with 1.5" pipework & connections
  • O-ring Not Included
In stock 10 in stock
In stock Same day dispatch on orders before 15:00
£4.99
Saving: £0.28
Collar = 1.5 " (Known As)
BSP Thread
Tailpiece = 1.5" (Known As)
O-Ring Not Included
  • Balboa Pump Union
  • Fits 1.5" Buttress Threads (63mmŲ)
  • 90° Elbow
  • 50mm Socket
  • Use with 50mm pipework & connections
  • Includes O-ring
In stock 7 in stock
In stock Same day dispatch on orders before 15:00
£5.29
Saving: £0.58
Collar = 1.5 " (Known As)
Buttress Thread
Tailpiece = 90° Elbow 50 mm
O-Ring Included
  • Balboa Pump Union Kit
  • Fits 2.0" Buttress threads (79mmŲ)
  • 50mm, 63mm, 2" Socket
  • Use with various connections
  • O-rings Included
In stock 20 in stock
In stock Same day dispatch on orders before 15:00
£23.74
Saving: £5.43
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = Various
O-Rings Included
  • Waterway Pump Union
  • Fits 1.5" Buttress threads (63mmŲ)
  • 1.5" Socket Connection
  • Use with 1.5" pipe work
  • Includes O-ring
In stock 13 in stock
In stock Same day dispatch on orders before 15:00
£3.33
Saving: £1.00
Collar = 1.5 " (Known As)
Buttress Thread
Tailpiece = 1.5" (Known As)
O-Ring Included
  • Waterway Pump Union
  • Fits 2.0" Buttress threads (79mmŲ)
  • 1.5" Socket Connection (or 2" Spigot)
  • Use with 1.5"/ 2" pipework & connections
  • Includes O-ring
Awaiting delivery Out of Stock
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Awaiting delivery More stock (30) due on 01/06/2021
£4.99
Saving: £1.31
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 1.5" Socket (Known As)
O-Ring Included
  • Waterway Pump Union
  • Fits 2.0" Buttress threads (79mmŲ)
  • 2.0" Socket Connection
  • Use with 2" pipework & connections
  • Includes O-ring
In stock 14 in stock
In stock Same day dispatch on orders before 15:00
£4.58
Saving: £1.74
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • Waterway Pump Union
  • Fits 2.5" Buttress threads (93mmŲ)
  • 2.0" Socket Connection
  • Use with 2" pipework & connections
  • Includes O-ring
In stock 1 in stock
In stock Same day dispatch on orders before 15:00
In stock More stock (10) on order
£6.66
Saving: £2.23
Collar = 2.5" (Known As)
Buttress Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • Waterway Pump Union
  • Fits 2.5" Buttress threads (93mmŲ)
  • 2.5" Socket Connection
  • Use with 2.5" pipework & connections
  • Includes O-ring
In stock 7 in stock
In stock Same day dispatch on orders before 15:00
£7.08
Saving: £3.41
Collar = 2.5" (Known As)
Buttress Thread
Tailpiece = 2.5" (Known As)
O-Ring Included
  • Waterway Pump Union
  • Fits 2.0" Buttress Threads (79mmŲ)
  • 45° Elbow
  • 2.0" Spigot
  • Use with 2" pipework & connections
  • Includes O-ring
In stock 4 in stock
In stock Same day dispatch on orders before 15:00
£5.41
Saving: £1.57
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 2.0" Spigot (Known As)
O-Ring Included
  • Waterway Pump Union
  • Fits 2.0" Buttress Threads (79mmŲ)
  • 90° Swept Elbow
  • 2.0" Socket
  • Use with 2" pipework & connections
  • Includes O-ring
In stock 11 in stock
In stock Same day dispatch on orders before 15:00
£6.24
Saving: £1.96
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • Gecko Pump Union
  • Fits 1.5" Buttress threads (63mmŲ)
  • 1.5" Socket
  • Use with 1.5" pipework & connections
  • Includes O-ring
In stock 5 in stock
In stock Same day dispatch on orders before 15:00
£7.49
Saving: £0.40
Balboa Pump Union
Buttress Thread
Tailpiece = 1.5" (Known As)
O-Ring Included
  • Gecko Pump Union
  • Fits 2.0" Buttress threads (79mmŲ)
  • 2.0" Socket
  • Use with 2.0" pipework & connections
  • Includes O-ring
In stock 8 in stock
In stock Same day dispatch on orders before 15:00
£8.33
Saving: £0.64
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • LX Pump Union
  • Fits 1.5" Buttress threads (63mmŲ)
  • 1.5" Socket Connection
  • Use with 1.5" pipework & connections
  • Includes O-ring
  • Suitable for the LX range of pumps  
Awaiting delivery Out of Stock
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Awaiting delivery More stock (31) on order
£5.41
Saving: £1.19
Collar = 1.5 " (Known As)
Buttress Thread
Tailpiece = 1.5" (Known As)
O-Ring Included
  • LX Pump Union
  • Fits 2.0" Buttress threads (79mmŲ)
  • 2.0" Socket Connection
  • Use with 2.0" pipework & connections
  • Includes O-ring
  • Suitable for the LX range of pumps
In stock 3 in stock
In stock Same day dispatch on orders before 15:00
£6.24
Saving: £0.36
Collar = 2.0 " (Known As)
Buttress Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • Espa Wiper3 Pump Union
  • Fits 2.0" BSP threads
  • 2.0" Socket
  • Use with 2.0" pipework & connections
  • Suitable for Espa Pumps
In stock 7 in stock
In stock Same day dispatch on orders before 15:00
£22.08
 
Collar = 2.0 " (Known As)
BSP Thread
Tailpiece = 2.0" (Known As)
O-Ring Included
  • Fit J-Pump Series (J Series Hot Tubs)
In stock 2 in stock
In stock Same day dispatch on orders before 15:00
£67.08
Saving: £16.67
  • Hydrospares Pump Union Collar
  • Split Nut Type
  • 2.00" - 79mm
Awaiting delivery Out of Stock
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Awaiting delivery More stock (12) on order
£20.41
Saving: £4.67
  • Waterway Gasket
  • Raised Bead
  • 60mm OD x 5.0mm
In stock 13 in stock
In stock Same day dispatch on orders before 15:00
£0.83
 

 

  • Waterway Wet End Adapter
  • Suitable for Waterway Pumps
  • 2.00" x 2.50"
  • Buttress Thread
  • Includes suitable O-Rings
Out of stock Out of Stock
Email me when back in stock
£4.99
Saving: £1.77