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McAlpine T28M-NRV Multifit in-Line Non-Return Valve, White

Q: Can I use this under a kitchen sink, attaching a washing machine drainage spigot to the T junction?

I'm not sure I understand what you are trying to do, connect a washing-machine to an existing outlet? If so, then no, this is not the piece you want. If you look at the photo of the piece, the upright 'leg' of the T as it's shown here, holds a swinging flap, which sits across and regulates the flow in the through-pipe (allows liquid freely through in one direction, 'non-return' or blocked if the flow is the opposite direction)

Q: To ensure I have the correct fitting, my waste pipe is 40mm diameter. Does this non-return valve fit as the dimensions shown suggest it won't?

I have fitted mine to my 40mm waste pipe. Mine is push fit but it will also fit 40mm solvent pipe.

Q: Could this be used on the outlet flow of a macerator?

Yes. I have mine connected to a saniflow macerator although for kitchen use only, I have no experience of it being used in a WC system. I use it in a kitchen sink since the one valve system used is not very good when disconnecting the saniflow pump for repair/maintenance.

Q: Is it possible to buy the rubber seal separately as it wears after a period requiring the whole fitting to be bought just to get a new . Thanksseal

No you cant buy, but you can make one get a piece of gasket rubber and cut ring out. Dont pour harsh drain cleaners down pipe, that will perish seal, ok

Product ID: 48962819

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Details

Material
Stainless
Brand
Mcalpine
Item dimensions L x W x H
6.4 x 12.2 x
Exterior finish
White
Inlet connection size
40 Millimetres
Inlet connection type
Cutting Ring

💧Prevents Backflow of Water

🚰1½" Universal Connections

🛠️Top Access for Easy Cleaning

Description

🚰 Keep your flow flawless—no backflow, no hassle!

COMPACT LIGHTWEIGHT - At just 160g and 6.4 x 12.2 x 12.2 cm, it fits discreetly without bulk or fuss.
EFFORTLESS MAINTENANCE - Top access design lets you clean the valve quickly without dismantling your system.
SEAMLESS UNIVERSAL FIT - 1½" connections ensure compatibility across multiple plumbing setups—no guesswork needed.
RELIABLE BACKFLOW PROTECTION - Engineered to prevent water backflow, safeguarding your home’s plumbing integrity.
DURABLE STAINLESS STEEL BUILD - Robust material choice guarantees long-lasting performance and corrosion resistance.

The McAlpine T28M-NRV Multifit In-Line Non-Return Valve is a compact, stainless steel plumbing essential designed to prevent water backflow. Featuring universal 1½" connections and a top-access cleaning port, it offers easy installation and maintenance for professional-grade reliability in any horizontal plumbing setup.

Specifications

Manufacturer	McAlpine
Part Number	T28M-NRV
Product Dimensions	6.4 x 12.2 x 12.2 cm; 160 g
Item model number	T28M-NRV
Colour	White
Material	Stainless Steel
Item Package Quantity	1
Number of Pieces	1
Measurement System	Metric
Included Components	1 x trap; fittings;
Batteries included?	No
Batteries Required?	No
Item Weight	160 g

Have a Question? See What Others Asked

Can I use this under a kitchen sink, attaching a washing machine drainage spigot to the T junction?

To ensure I have the correct fitting, my waste pipe is 40mm diameter. Does this non-return valve fit as the dimensions shown suggest it won't?

Could this be used on the outlet flow of a macerator?

Is it possible to buy the rubber seal separately as it wears after a period requiring the whole fitting to be bought just to get a new . Thanksseal

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Great experience from order to delivery. Highly recommended!

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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