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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

£7.06 (£5.88 Ex. VAT)
34 item(s)


£4.20 (£3.50 Ex. VAT)
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£14.12 (£11.77 Ex. VAT)
51 item(s)

£9.85 (£8.21 Ex. VAT)
3 item(s)

£13.21 (£11.01 Ex. VAT)
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£4.42 (£3.68 Ex. VAT)
45 item(s)

£1.92 (£1.60 Ex. VAT)
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£2.82 (£2.35 Ex. VAT)
72 item(s)

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£5.32 (£4.43 Ex. VAT)
42 item(s)

£13.84 (£11.53 Ex. VAT)
17 item(s)

£18.92 (£15.77 Ex. VAT)
8 item(s)

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£2.64 (£2.20 Ex. VAT)
70 item(s)

£3.58 (£2.98 Ex. VAT)
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£5.40 (£4.50 Ex. VAT)
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£5.16 (£4.30 Ex. VAT)
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£6.66 (£5.55 Ex. VAT)
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£4.62 (£3.85 Ex. VAT)
206 item(s)


£11.95 (£9.96 Ex. VAT)
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£16.14 (£13.45 Ex. VAT)
37 item(s)

£5.76 (£4.80 Ex. VAT)
50 item(s)

£7.97 (£6.64 Ex. VAT)
2 item(s)

£13.20 (£11.00 Ex. VAT)
8 item(s)

£39.11 (£32.59 Ex. VAT)
14 item(s)

£13.74 (£11.45 Ex. VAT)
8 item(s)

£3.64 (£3.03 Ex. VAT)
10 item(s)

£4.52 (£3.77 Ex. VAT)
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£6.54 (£5.45 Ex. VAT)
208 item(s)

£9.28 (£7.73 Ex. VAT)
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£9.28 (£7.73 Ex. VAT)
95 item(s)

£7.26 (£6.05 Ex. VAT)
73 item(s)

£8.51 (£7.09 Ex. VAT)
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