Free Next Day Delivery

UK Orders over £40 before 7pm
 

No Fuss Returns

Find out how we make it easy
 

Quick Shop

15,000 Products in stock
Basket 0

items

My Basket (0)

Your basket is empty

Delivery

Delivery

FREE Delivery!

On orders over £40*

Total inc. delivery and VAT

Total inc. delivery and exc. VAT

Browse

Find Products

Search our Catalogue

Filter by

Sort

Filter by

Product Type

Brand

Click here
Differential Bypass Valve Straight

Auto Bypass Valve (8 products)

Differential bypass valve is designed to prevent the pump from working against a closed circuit when all the 2 port control valves or thermostatic radiators have closed. Read more Show less

  • 1 of 1

Automatic By-Pass Differential Valve - 22mm Angled

Part number: 21382

Automatic differential by-pass valve, angled with 22 mm compression connect...

Ex. VAT

£4.49

Save £1.15 (20%)

Inc. VAT

£5.39

Save £1.38 (20%)

Automatic By-Pass Differential Valve - 22mm Straight

Part number: 19570

Differential bypass valve is designed to prevent the pump from working agai...

Ex. VAT

£22.46

Inc. VAT

£26.95

Automatic By-Pass Differential Valve - 22mm Angled

Part number: 17884

The ABV-22 automatic bypass and differential pressure valve with differenti...

Ex. VAT

£8.16

Inc. VAT

£9.79

Automatic By-Pass Differential Valve - 22mm Straight

Part number: 21383

Automatic differential by-pass valve, straight with 22 mm compression conne...

Ex. VAT

£5.99

Save £2.06 (25%)

Inc. VAT

£7.19

Save £2.47 (25%)

Honeywell Commercial Auto By-Pass Valve - 3/4" Angled

Part number: 18865

Honeywell DU146 commercial automatic bypass valve controls flow of water th...

Ex. VAT

£69.78

Inc. VAT

£83.74

Honeywell DU145 Auto By-Pass Valve - 22mm Angled

Part number: 18864

Honeywell straight or angled automatic bypass valve controls the flow of wa...

Ex. VAT

£46.14

Inc. VAT

£55.37

Honeywell DU144 Auto By-Pass Valve - 22mm Straight

Part number: 18863

Honeywell straight or angled automatic bypass valve controls the flow of wa...

Ex. VAT

£46.14

Inc. VAT

£55.37

Automatic By-Pass Differential Valve - 22mm Angled

Part number: 12161

WRAS approved, angled body. This valve is very effective in systems where v...

Ex. VAT

£35.26

Inc. VAT

£42.31

Top