Compression Differential Bypass Valve 22mm Product Code: 40437

Provides protection for both pump and boiler. Meets Building Regulation requirements.


Settings from 0.1 to 0.5bar.
Additional Information
Technical Specification
  • Brand : Unbranded
  • Product Type : Compression Differential Bypass Valve
  • Pack Size : 1
  • Product Diameter : 22 mm
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

Click here to see information on our delivery charges and times



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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€27.45 Incl. 20% VAT

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Compression Differential Bypass Valve 22mm is rated 2.3 out of 5 by 3.
Rated 1 out of 5 by from Very Poor Fitted a few of these and had a couple fail causing noise in the system replaced with a better quality valve
Date published: 2019-04-11
Rated 1 out of 5 by from Poor quality product There is a reason for this being half the price of the Honeywell one. It is nasty, and worst of all it sticks open as the plunger attempts to return to its seat. Took it back for a refund. Of course I may have just got a did, but I would check yours thoroughly before fitting.
Date published: 2017-07-01
Rated 5 out of 5 by from Bypass used as pressure relief I used this device as a pressure relief valve. It does what I wanted and is not expensive so I would use another if required.
Date published: 2012-12-03
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