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The Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer is a precision-engineered replacement part designed to fit all Siamp inlet valves. Made from durable rubber and plastic, it ensures reliable sealing and restores optimal cistern refill speed. Easy to install without replacing the entire valve, this washer is a top-rated, cost-effective solution trusted by thousands for efficient bathroom maintenance.










| ASIN | B005DQWMO8 |
| Best Sellers Rank | 124,733 in DIY & Tools ( See Top 100 in DIY & Tools ) 390 in Toilet Parts |
| Brand | SOMATHERM FOR YOU |
| Connector Type | Female Iron Pipe |
| Customer Reviews | 4.6 out of 5 stars 4,319 Reviews |
| Exterior Finish | Painted |
| Exterior finish | Painted |
| Global Trade Identification Number | 03247230010516 |
| Included Components | 1 x Siamp Inlet Float Valve Diaphragm Washer 34951307 |
| Inlet Connection Type | Female Iron Pipe |
| Inlet connection type | Female Iron Pipe |
| Item Dimensions | 27 x 27 x 18 millimetres |
| Item Type Name | Inlet Float Valve Diaphragm Washer 34951307 |
| Item Weight | 5 g |
| Item dimensions L x W x H | 27 x 27 x 18 millimetres |
| Manufacturer | Siamp |
| Manufacturer Warranty Description | Not applicable. |
| Material | Plastic Rubber |
| Model Number | 34951307 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Type | Sweat |
| Outlet connection type | Sweat |
| Part Number | 34951307 |
| Size | 1.26 cc |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | WRAS |
| Thread Size | 1/4-28 |
| Unit Count | 1.0 count |
| Valve Type | Float Valve |
L**S
Perfect quality for the job
Great quality. Did the job
J**L
Perfect fit.
Correct product avoiding the risk of cheaper copies not fitting properly. Excellent quality.
S**E
works but it is difficult to install/align
These work but they are difficult to install/align. When you align the valve with the slot in the ballcock body, make sure you turn the valve so that the plastic tang does not fowl/catch/snag on the side of the body otherwise the valve will not work. It has to be in the middle of the slot. Hope this helps.
S**M
they're pretty easy to replace
My toilet did not work. Now my toilet works. 10/10, does what it says on the tin. The rating is 5 stars for the convenience of sourcing this item. The actual item itself is a very high quality replacement too. Unfortunately, it's just prone to failure due to the design of the system as a whole. These things are known to fail after a few years on Siamp systems, so I'd say save yourself the future pain and buy a couple. That said, they're pretty easy to replace, the process is very intuitive, and it's very possible to do by yourself and save the cost of a plumber for what is ultimately (and very literally) a 5 minute job. Even if you aren't DIY minded, there are plenty of really informative tutorials out there on how to fit these. The three most important pitfalls though, are ensuring the water is shut off first, ensuring you fit the new valve with the same orientation as the old one (they are keyed though to prevent incorrect fitting), and ensuring that the water shutoff system works correctly once fitted - it can come unclipped when removing the valve holder which will prevent the inlet from closing once the water is at the maximum level.
S**E
Just the job.
Fixed the cistern (and saved me from the Wife's disapproval).
J**G
Great value for money
The toilet cistern in question, manufactured by "Vitra" flushed okay, but took forever to refill. Like many previous reviews, I to had the same issue that caused the slow refill, which was that the Diaphragm Washer has a very small tear in it - this was simply due to years of wear. Whilst this replacement washer is manufactured by "Siamp", it transpires that this company actually makes the original part for "Vitra" and others, so perfectly good to use here. Replacement is very easy... 1. First, isolate the water feed to the cistern and flush the cistern 2. Unscrew the large plastic cap (marked as "A" in the attached photo) 3. Within this cap, you will find the diaphragm washer - simply remove this and replace with the new one. You will see a plastic vertical line on the back face of the washer - align this with the gap in the cap (it can only go in one way) 4. Once the washer is secured, screw the cap firmly back-on to prevent any leaks, ensuring the arm on the float is positioned as shown on the attached photo (marked "B"). 5. Reinstate the water feed and all being well, the flush/filling will be as good as new
M**I
Good
That one works
A**R
Did the job
Did the job
D**E
Exactly as ordered
Exactly what I ordered. Fast delivery
A**O
Guarnizione valvola galleggiante cassetta water
Ottimo, ho risolto senza cambiare tutta la valvola galleggiante
M**A
Parfaite
La membrane SOMATHERM FOR YOU pour robinet flotteur de WC est une excellente pièce. Facile à installer, elle s'adapte parfaitement à mon système. Depuis son remplacement, le fonctionnement de la chasse d’eau est redevenu fiable, sans fuite ni problème de remplissage. De bonne qualitée, elle semble solide et conçue pour durer dans le temps. Je suis très satisfait de cet achat, qui a permis d’éviter des réparations coûteuses. Je recommande vivement !
A**E
Super
Alles ok
S**O
10 de 10
Encaja perfecto y se monta fácil
Trustpilot
1 week ago
5 days ago