50mm Anti Flood Backwater Check Valve Backflow Prevention

(1 review) Write a Review
UK Stock - Immediate Dispatch
£3.99 (or free for orders over £50)
  • Karmat Version A 50mm Anti Flood Backwater Check Valve Backflow Prevention
  • Karmat Version A 50mm Anti Flood Backwater Check Valve Backflow Prevention
Frequently bought together:


With the aim to make installation easier, KARMAT produces the 50mm backwater valve in versions A, B and C . They are used in all sewage-related systems such as washbasins, sinks, shower bases, dishwashers and washing machines.
- Manufactured in different versions making installation possible into any type of system;
- Designated for installation inside a house or a flat;
- Aesthetically designed.

Efficient protection against rodents
- Compatible with the standard, the safe distance of the bottom of the casing ensures proper operation and allows for the self-cleaning of the valves;
- The shape of the chromium-nickel stainless steel guard protects the flap and gasket from damage by rodents and the slipping of the seals during sewage flow;
- Smooth and properly shaped internal surface allows free flow of sewage and makes the accumulation of deposits or the blocking up of the valve impossible.

Version A:
The backwater valve 50mm in version A is fitted in the horizontal course of 50mm sewage pipework attached to the wall by means of brackets. A non-return valve installed in such a way can protect several facilities at the same time if they are connected to the same sewage system such as a bath or shower base traps.

View AllClose

Warranty Information

All products supplied are covered by the terms and conditions of the Manufacturer's Warranty for a period of 12 months.

However, some manufactures have a lifetime guarantee. In this case please contact us. This guarantee specifically excludes faults caused by accident, neglect, and misuse. In addition routine maintenance (cleaning of dirty audio/video heads etc.), consumables (styli, plug fuses, cables, batteries, etc.), cosmetic damage and tuning of channels are not covered.

The seller will be wholly responsible for the cost of return delivery and safe return of the goods. We will provide pre-paid label to return goods to us for orders which have been purchased in Europe or will expect goods to be shipped back to us by buyer by using the cheapest possible courier services and we will reimburse the shipping cost to the customer when goods received if goods to be returned from outside Europe. Proof of postage is not proof of delivery and you are therefore strongly advised to send your package by recorded delivery, registered post or courier, and to maintain sufficient insurance to cover the value of the goods.

Regardless of the warranty, you have right to cancel your order within 30 days without giving any reason. The cancellation period will expire after 30 days from the day when order has been delivered. To gain the right to cancel, you must inform us about your decision to cancel the order by a clear statement. To meet the cancellation deadline, it is sufficient for you to contact us about your decision before the cancellation period has expired.

Effects of cancellation: If you cancel the order, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you chose a type of delivery other than the least ex-pensive type of standard delivery offered by us). We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you.
View AllClose

1 Review

  • 4

    Backflow valve

    Posted by Phil on 16th Jan 2022

    Looks well made, but as a flood prevention device, only time will tell. Certainly looks better than most British offerings. Only downside is that 50 mm means 50 mm, both ends and no UK pipe will fit without a lot of adaption. Will not fit 50 mm UK solvent weld or pushfit pipes. Polish manufacturer very helpful.

View AllClose