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McAlpine T28M-NRV Non-Return Valve White 40mm (61561)

40mm non-return valve for domestic and commercial use.

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£13.99INC VAT

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McAlpine T28M-NRV Non-Return Valve White 40mm is rated 4.8 out of 5 by 23.
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Rated 5 out of 5 by from 40mm Non Return Valve I have an intermittent issue with my new sink waste where I get a back flow into a Franke tap pressure release valve, and because this overflow valve has an "Open Hose Trap" that flows into the waste the water waste from emptying the sink back flows into this Franke and pours out inside the sink cupboard. This non return valve I think is my answer to the problem. I have yet to install it, but if I find that it doesn't do the job, I will let you all know, but I'm pretty sure that this is the solution. Yes it's expensive but reliability and performance I am not yet at a point where I can define the score so have based it on a positive mark as I'm sure it will be as good as I expect it to be.
Date published: 2016-10-26
Rated 5 out of 5 by from Perfect Remedy We've had a constant problem with waste water from our wash basin coming up into the adjoining shower each time we emptied water from the basin. During the last 2 years we've wasted ££s on pipe and drain cleaners to no avail and then I read about this non-return valve in one of the customer reviews here. It's very simple to fit and has finally resolved the problem saving us ££s. Excellent product and valuable reviews
Date published: 2016-09-16
Rated 4 out of 5 by from Only one of its type? A very useful fitting to prevent backflow where another waste outlet pumps water out eg washing machine. Easy to fit with plenty of room for error on pipe cutting if fitting on pre-installed pipework. Only just fitted and is doing what it's meant to do. My only concern is the compression fitting as it is being used to prevent a flow one way and allow a flow the other one. Therefore it could be put under a lot of stress. Time will tell. Could be cheaper but seems the only one of it's type so no real choice.
Date published: 2016-09-01
Rated 5 out of 5 by from MacAlpine Non Return Valve I had to search hard to find this item and yet it was under my nose at Screwfix. An easy item to fit where complicated plumbing would have been required otherwise. Works perfectly with no side effects. Delighted
Date published: 2016-04-29
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how long is it

Asked by: mike3449

Is the the non return valve designed to work if fitted both horizontally and vertically?

Asked by: Pedar
It won't work vertically as the valve diaphragm is held closed simply by gravity. Any divergence from the horizontal significantly more than the normal slope of a horizontal outlet pipe will result in the valve remaining partially open. If fitted vertically it would be fully open, defeating its purpose.
Answered by: Ozymandias
Date published: 2017-03-05

does this fit the 40mm FloPlast waste pipe please

Asked by: Cathmp

Does the valve require maintenance ,also does it restrict flow

Asked by: Jamming

McAlpine T28M-NRV 40mm Non-Return Valve White

Can this be used has a T junction
Asked by: nhsharp
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Specification
Brand McAlpine
Colour White
Manufacturer Guarantee 1 Year Guarantee
Model No T28M-NRV
Pack Size 1
Pieces in Pack/Case 1
Product Diameter 40 mm
Product Type Non-Return Valve
Total Product Weight 0.14 kg

Non-return valve with nuts and seals. EN 1451, EN 1329.

Product contents

Non-return valve with nuts and seals.