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๐ฟ Upgrade your flush game with GROHE precision!
The GROHE 42137 Adagio Cistern Discharge Valve is a premium replacement valve designed for effortless, leak-free flushing. Featuring a single air push pneumatic button, durable iron brass construction with chrome finish, and easy DIY installation, it ensures reliable performance and water efficiency. Trusted by professionals and homeowners alike, this genuine GROHE part delivers seamless operation and long-lasting durability.


| ASIN | B00DREW5B8 |
| Best Sellers Rank | 43,415 in DIY & Tools ( See Top 100 in DIY & Tools ) 36 in Toilet Tanks |
| Brand | GROHE |
| Customer Reviews | 4.6 out of 5 stars 226 Reviews |
| Exterior Finish | Chrome |
| Exterior finish | Chrome |
| Inlet Connection Size | 1.9 Centimeters |
| Inlet Connection Type | Pneumatic |
| Inlet connection size | 1.9 Centimeters |
| Inlet connection type | Pneumatic |
| Item Dimensions | 10 x 10 x 45.4 centimetres |
| Item Weight | 0.26 Kilograms |
| Item dimensions L x W x H | 10 x 10 x 45.4 centimetres |
| Manufacturer | Grohe |
| Material | Iron Brass |
| Maximum Pressure | 1 Bars |
| Model Number | 42137000 |
| Number of Ports | 2 |
| Outlet Connection Size | 12.7 Millimeters |
| Outlet Connection Type | NPT |
| Part Number | 42137000 |
| Set Name | 1 |
| Size | 4.54 liters |
| Specification Met | wc |
| Thread Type | Non-threaded |
| Unit Count | 1.0 count |
| Valve Type | Servo Discharge Valve |
R**Y
Great
Genuine Grohe part, very easy to swap out and stopped the cistern leaking into the bowl.
P**.
Simple .... it works
Great item simple to fit, cut it for length, does the job........ got to give it a 10/10
K**L
Good Replacement Part
Did the job and stopped the continual feed of water into the bowl (which caused periodic noise when it re-filled)!
J**G
Cistern spares.
Quality item , arrived in good time , thank you .
C**3
As described
Perfect replacement for our old system. It was basically exact same one as before so straight fit. Tried many things including seals etc with no luck so decided to buy this. No problems with leaking water into the toilet since.
R**S
Easy effective replacement
It works. Surprisingly easy to fit. It was a replacement for one that had started to leak water after about 10 years.
W**N
Works
Ordered and the 1st item to arrive failed after a few days and the toilet leaked. If I didn't have a 2nd toilet to try it on I'd never have know if it was the valve or the toilet. The replacement send by Amazon seems to have fixed my problem. I'd recommend if you are looking for this Discharge Valve.
S**Y
Really easy to install
Bought as a replacement for one that started leaking after about 15 years. Incredibly easy to install - no tools required, apart from a mini-hacksaw to trim the top tube to the right length. Then just drop it in place, reassemble the bellows bracket and you are done - no more leaks, and no need for a plumber. It might have been possible to just replace the sealing rings, but for the small cost of the whole unit, I thought it best to replace the unit and hopefully it will need no attention for another 15 years.
Trustpilot
2 weeks ago
2 weeks ago