The angled bypass valve plays a crucial role in enhancing the efficiency and longevity of your central heating system by ensuring optimal fluid circulation.

By being strategically installed between the flow and return lines, this valve effectively prevents unnecessary strain on the central heating pump, which can occur when zone valves or thermostatic radiator valves are closed. This results in a more stable operation, reducing wear and tear and promoting a longer lifespan for your heating system components. Designed to withstand demanding conditions, this valve operates under a maximum working pressure of 10 bar and can handle temperatures up to 100 degrees Celsius. Its robust construction ensures reliability and peace of mind, making it an essential component for any modern central heating setup. With its capacity to alleviate back pressure and optimise the internal flow, this valve is indispensable for maintaining consistent performance and efficiency in home heating applications.

Product Details:

  • Angled bypass valve for central heating systems
  • Installed between flow and return pipes
  • Prevents pump strain when valves are closed
  • Max working pressure: 10 bar
  • Max working temperature: 100°C
  • Suitable for use with zone and thermostatic valves
  • 22mm compression connections
  • Setting range: 0.1 - 0.5bar (0 to 50 kPa)

£4.99 Standard Delivery, or FREE on most orders over £99* (some exclusions apply)

£9.99 Next day delivery is available for orders places before 12 noon. Any orders placed for next day delivery after this time, will take 2 working days to be delivered.

Working/delivery days are Monday to Friday, deliveries will not normally be made Saturday or Sunday.

We offer a 30-day returns policy on on the majority of our items*, as long as the item is unused, undamaged and unopened**. We only ask that the postage is covered by yourself. 


* Please see our delivery page for further details on specific exceptions.

** Some products that are made to order or personalised cannot be returned.

***Exclusions apply for items shipped directly from our suppliers, and some big & bulky items may incur an additional charge. Please see our delivery page for full details. 

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Altecnic ERES Automatic Differential Bi Pass Valve Angled 22mm

  • 11,05 €
  • (Delivery from 5,57 € )
Item in Stock   |   Usually dispatched within 24 hours
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Free UK Delivery on most orders over £99
Delivery Rates & Information

Delivery Options

Standard Delivery: £4.99 - Free for all orders over £99.*
Next Day Delivery: £9.99 - Available for orders placed before 12:00 PM (Noon).

Important Delivery Notes

Next Day Delivery Cut-off: Orders placed after 12:00 PM (Noon) using Next Day Delivery will be delivered within two working days.
Working Days: Our standard delivery and shipping days are Monday through Friday. We do not normally deliver on Saturdays or Sundays.

Easy 30-Day Returns

We want you to be happy with your purchase! We offer a 30-day returns policy on all items, provided the following conditions are met:
  • The item is unused and undamaged.
  • The item is returned in its original packaging.
  • The customer is responsible for the return postage costs.

Combining Your Order

We always strive to combine your order into a single delivery. However, your order may arrive in multiple shipments if it contains:
  • Items from different warehouses (Standard items).
  • 'Direct' items (These are shipped separately and directly from the supplier) and will arrive separately from other items in your order.

*Exclusions & Additional Charges

The following items may be excluded from standard shipping rates or may incur extra delivery charges:
  • Items Shipped Directly from Suppliers ('Direct' items).
  • Certain Large or Bulky Items.
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