Grohe DAL single flush valve assembly (42137 000)

Product Code: Grohe 42137 000

Average Rating: (4.9 of 5 stars based upon 31 reviews)

Grohe DAL single flush valve assembly.

Also known as a servo discharge valve, dump valve, or syphon.

To be used with Grohe concealed cisterns with a single flush push button (not suitable for dual flush / twin button systems).

Suitable for use with the Grohe DAL discharge piston (43544 000).

Pre-assembled with new discharge piston/seals. Supplied as a 270mm assembly, which can be easily trimmed down to suit the cistern. A taller/longer version is the Grohe 43486 000.

This part will fit:

For advice on this or any other product, please call 0845 126 4141 or see our contact page.

Our Price: £21.18 inc VAT Excluding VAT: £17.65

Shipping time: Usually despatched on the same day if ordered before 3:30pm Monday-Friday. Otherwise, next working day. If there is any delay with your order we will contact you by phone or e-mail.

Quantity: Add to Basket
Grohe 42137 000 - medium image 1
Grohe 42137 000 - small image 1 Grohe 42137 000 - small image 2

(Click the main image above to enlarge.)



3,885 customers have written a review about us on Trustpilot

Latest review

Review stars

Good service & very quick delivery

Can be trusted to what to do what it says on the can

Mr Gaywood

Mr Gaywood


No packages found.

Have a question about the 'Grohe DAL single flush valve assembly (42137 000)'?

Click Here to submit your question to one of our qualified team members and we will email you back a direct response.

If we feel the information might be useful to future customers we will also feature it on the website.

when cistern fills on customers wc makes a strange noise vibration, stops when lightly touched. will a new one solve this problem. Installed 12 years ago.

Hello, this is most likely the filling valve, 37095 brass thread, 42181 1/2" plastic thread

hi, I have a Villeroy & Boch Amadeus ceramic cistern, I need a new lift up flush valve, will the 42137 fit?

Hello, the only option for a lift up flush is to fit the Grohe 43907 PI0 retrofit kit, it will convert the existing lift up flush to a push button flush, the original Villeroy & Boch lift flush is no longer in production. You can find this part by using the search box above.

(5 of 5 stars)

This was the correct part, to be replaced and when fitted performed as expected.

Written by Mr Clarke on 22nd April 2014

(5 of 5 stars)

Delivered on time without fuss.

Written by Mr Harrison on 8th March 2014

(5 of 5 stars)

Product arrived exactly as described and was easily replaced in my concealed cistern

Written by Mrs Wallace on 27th February 2014

(5 of 5 stars)

Product exactly as described and extremely easy and quick to fit.

Written by Mr Lavender on 25th February 2014

(5 of 5 stars)

Very straightforward to fit.

Written by Mr Edwards on 21st February 2014

(5 of 5 stars)

Great service from NSS. I ordered the valve one afternoon and it was delivered the next morning. By noon I had it fitted, it was easy and I'm not a plumber! It works great, completely cured the problem.

Written by Mr Jones on 23rd January 2014

(5 of 5 stars)

Really impressed with the service from National Shower Spares. Very prompt delivery and item exactly as described. No problems using them again. 10/10

Written by Mr Gibson on 30th December 2013

(5 of 5 stars)

The Grohe float valve arrived quickly and was easily fitted and problem solved!

Written by Mr Simmonds on 2nd December 2013

(5 of 5 stars)

Exactly as I ordered. Delivered very quickly and fitted by 11:30am next day, excellent service.

Written by Mr Williams on 25th November 2013

(5 of 5 stars)

Even for a novice this was easy to work out, order and replace. A good piece of design engineering with a practical emphasis. Happy to have further extended our concealed cisterns lifespan.

Written by Mr Low on 20th November 2013

(5 of 5 stars)

Great service

Written by Mr Clark on 20th November 2013

(5 of 5 stars)

Very good professional service would use again

Written by Mr Mckechnie on 23rd September 2013

(4 of 5 stars)

Product delivered promptly. Just what I ordered too! Thanks.

Written by Stewart Pepper on 23rd September 2013

(5 of 5 stars)

Great service, fast delivery, exactly the right product.

Written by Mr Turnbull on 17th September 2013

(5 of 5 stars)

Right part, right price, super fast delivery ... say no more!

Written by John Hunter on 16th September 2013

(4 of 5 stars)

Product as the packet said - filled easy.

Written by Mr Hillard on 13th September 2013

(5 of 5 stars)

Product arrived very quickly, was easy to fit and did the job. Good pricing as well. Will use again. Thanks people!

Written by Mr J Lassen on 13th September 2013

(5 of 5 stars)


Written by Dr Mistry on 10th September 2013

(5 of 5 stars)

Pleased with product and service.

Written by Mr Snedden on 31st August 2013

(5 of 5 stars)

Amazingly quick supply.

Written by Mr Somers on 30th August 2013

(5 of 5 stars)

exactly the part I ordered, very good price and the delivery time was excellent. Will definitely use them again.

Written by Mr Martin on 12th August 2013

(5 of 5 stars)

Fixed the problem with no difficulty. The item was exactly as required and as advertised. Great speedy service.

Written by Mr Fletcher on 5th August 2013

(5 of 5 stars)

High quality original spare part.

Written by Dr Ali on 25th July 2013

(5 of 5 stars)

Simple to fit and direct replacement of years-old original. Look no further!

Written by Mr Little on 18th July 2013

(5 of 5 stars)

Very quick turnaround, excellent service

Written by Chris on 8th July 2013

(4 of 5 stars)

Product was really easy to fit and is perfect for the job. Although I thought the plastic it was made of was a bit thin and cheaper looking compared to the original Grohe unit, but if it works and last a long time that shouldnt matter.

Written by Mr Hope on 8th July 2013

(5 of 5 stars)

Excellent product availability and service

Written by Mr Gibson on 18th April 2013

(5 of 5 stars)

Searching and display of the product was excellent.

Website was easy to navigate.

Price competitive.

Fast and efficient service...will use again.

Written by Mr Lombardi on 5th March 2013

(5 of 5 stars)

Spare cistern part was delivered on time and as stated.

Can't fault the service.

Written by Mr Barlow on 4th February 2013

(5 of 5 stars)

Very pleased with the quality of the product, and the speed and efficiency of delivery.

Written by Mr Syms on 8th January 2013

(4 of 5 stars)

When your Grohe concealed cistern lets water trickle continuously into the pan, you need one of these.

A straightforward replacement job. It is essential to cut the plastic overflow tube to the correct length. Plastc pipe cutters are ideal for this.

These valves start letting-by after a few years. Cleaning is rarely effective; replacement is usually the only successful solution. This is the genuine manufacturer's replacement part.

Written by EpsomPlumber on 17th December 2012

National Shower Spares ( logo

shower spares


The UK's leading distributor of new showers, shower spares and shower accessories

National Shower Spares is ranked #1 out of 131 companies in the bathroom category at Trustpilot!
National Shower Spares home page
YOU ARE HERE: Home > Search Results > Grohe DAL single flush valve assembly (42137 000)

0845 126 4141
local rate call charge

Our Office/Telephone Opening Times

0 items


Search »