---
product_id: 48677960
title: "Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour"
brand: "somatherm for you"
price: "£5.30"
currency: GBP
in_stock: true
reviews_count: 13
category: "Somatherm For You"
url: https://www.desertcart.co.uk/products/48677960-siamp-34951309-cistern-inlet-float-valve-diaphragm-washer-multi-colour
store_origin: GB
region: United Kingdom
---

# Reliable water seal with durable diaphragm Quick 5-minute installation Precision-fit for all Siamp valves Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour

**Brand:** somatherm for you
**Price:** £5.30
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with precision and ease!

## Quick Answers

- **What is this?** Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour by somatherm for you
- **How much does it cost?** £5.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/48677960-siamp-34951309-cistern-inlet-float-valve-diaphragm-washer-multi-colour)

## Best For

- somatherm for you enthusiasts

## Why This Product

- Trusted somatherm for you brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Installation:** Replace your faulty valve washer in just minutes—no plumber needed, saving time and money.
- • **Universal Compatibility:** Fits seamlessly with all Siamp inlet valves for hassle-free replacements.
- • **Cost-Effective Maintenance:** Avoid costly full valve replacements with this affordable, high-quality spare part.
- • **Durable Rubber & Plastic Build:** Engineered with premium materials to ensure long-lasting performance and leak-free operation.
- • **Trusted Quality & Certification:** WRAS certified and backed by Siamp’s reputation, ensuring safety and reliability.

## Overview

The Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer is a WRAS-certified, multi-colour replacement part designed for all Siamp inlet valves. Crafted from durable rubber and plastic, it ensures a reliable water seal and prevents overflows. Lightweight and compact, it enables quick, tool-free installation, making it the smart, cost-effective fix for maintaining optimal toilet performance.

## Description

From the manufacturer Somatherm For You is the consumer brand of the Ayor Group for plumbing, sanitary and heating accessories solutions. French manufacturer, the Ayor Group designs and develops solutions and products adapted to the needs of users. It is through this differentiating offer that the Somatherm For You brand has become, in 70 years, the preferred product offer for individuals for their DIY projects, both in new and renovation. Today known and recognized for the quality of its products and their ease of installation, the Somatherm For You brand is today an offer of more than 3000 references available for all home water supply and distribution solutions! Discover the favorite products of our DIYERS! Adjustable taps Waterproof auto taps. Easy to use to ensure assembly. The hoses Stainless steel braid, twist nut. Group 3 security in 1 3-in-1 stainless steel swivel safety unit. The fastening system A fitting system. Diaphragm for float valve SIAMP - low supply Allows you to change only the membrane and not the entire mechanism.

Review: Perfect quality for the job - Great quality. Did the job
Review: It does exactly what it says on the label. - My previous "Siamp Cistern Inlet Filling Valve Diaphragm Washer Seal 34951307" (from now on to be referred to as Si Seal) had degraded and finally failed. This caused my cistern to fill slowly from the high pressure jet of water that was now squirting out of the inlet valve, which given my diet of incredibly spicy foods and stuff found in the back of broken refrigerators wasn't ideal.In fact, I'm not sure if some of the stuff I eat even qualifies as 'food'. Does 'random slime oozing out of an old pot' count as part of your five a day? Anyway, sometimes I just have to double flush or I require multiple trips to the toilet in short succession, and having a slow filling cistern just didn't cut it at all. Waiting 20 minutes at a time to dispose of whatever unholy mess I'd created was eating into a lot of my spare time. Luckily I was able to find a Si Seal while browsing desertcart waiting for the cistern to refill so I managed to buy it in my oxygen deprived state, along with an extractor fan and a bumper pack of air fresheners. The Si Seal arrived pretty quickly and fitting it was rather simple. Once fitted my cistern was back to it's usual fast filling self, much to the relief of anyone 150m downwind of my bathroom window.

## Features

- Suitability: Suitable for all Siamp inlet valves
- Material(s) Rubber and plastic.
- Quality product direct from Siamp

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005DQWMO8 |
| Best Sellers Rank | 15,002 in DIY & Tools ( See Top 100 in DIY & Tools ) 46 in Toilet Parts |
| Brand | SOMATHERM FOR YOU |
| Connector Type | Female Iron Pipe |
| Country of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 4,320 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 | 0.01 Pounds |
| 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 |

## Product Details

- **Brand:** SOMATHERM FOR YOU
- **Exterior finish:** Painted
- **Global Trade Identification Number:** 03247230010516
- **Inlet connection type:** Female Iron Pipe
- **Item dimensions L x W x H:** 27 x 27 x 18 millimetres
- **Material:** Plastic Rubber
- **Number of ports:** 2
- **Outlet connection type:** Sweat
- **Specification met:** WRAS
- **Unit count:** 1.0 count

## Images

![Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour - Image 1](https://m.media-amazon.com/images/I/71kHzgVh7cL.jpg)
![Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour - Image 2](https://m.media-amazon.com/images/I/41ouHw6GuaL.jpg)
![Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour - Image 3](https://m.media-amazon.com/images/I/71Y5KpllnqL.jpg)
![Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour - Image 4](https://m.media-amazon.com/images/I/71e3IUDoMBL.jpg)

## Questions & Answers

**Q: how do i fit a siamp inlet valve diaphragm ?**
A: Please see this YouTube tutorial at: http://www.youtube.com/watch?v=r2ot2cypULs

**Q: I have an older pushbutton Ideal Standard and because of very low flow rate I have a special washer. will an up to date multi pressure do the trick?**
A: Sorry really do not know.

**Q: I have a single button flush cercern witch keeps running will this work**
A: My cistern is a single button flush. Turn the button anti-clockwise (a bit fiddly) to open the top to see the mechanism inside. You Tube has excellent videos on this subject. Good Luck.

**Q: What number is written inside on the white plastic?**
A: 11 is stamped on the back of the white plastic on my spare diaphragm washer. Note Siamp part number 34951309 is the only diaphragm washer that Siamp have available on their website.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect quality for the job
*by L***S on 6 April 2026*

Great quality. Did the job

### ⭐⭐⭐⭐⭐ It does exactly what it says on the label.
*by F***P on 22 October 2015*

My previous "Siamp Cistern Inlet Filling Valve Diaphragm Washer Seal 34951307" (from now on to be referred to as Si Seal) had degraded and finally failed. This caused my cistern to fill slowly from the high pressure jet of water that was now squirting out of the inlet valve, which given my diet of incredibly spicy foods and stuff found in the back of broken refrigerators wasn't ideal.In fact, I'm not sure if some of the stuff I eat even qualifies as 'food'. Does 'random slime oozing out of an old pot' count as part of your five a day? Anyway, sometimes I just have to double flush or I require multiple trips to the toilet in short succession, and having a slow filling cistern just didn't cut it at all. Waiting 20 minutes at a time to dispose of whatever unholy mess I'd created was eating into a lot of my spare time. Luckily I was able to find a Si Seal while browsing Amazon waiting for the cistern to refill so I managed to buy it in my oxygen deprived state, along with an extractor fan and a bumper pack of air fresheners. The Si Seal arrived pretty quickly and fitting it was rather simple. Once fitted my cistern was back to it's usual fast filling self, much to the relief of anyone 150m downwind of my bathroom window.

### ⭐⭐⭐⭐ works but it is difficult to install/align
*by S***E on 14 April 2026*

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.

## Frequently Bought Together

- Siamp 34951309 Cistern Inlet Float Valve Diaphragm Washer - Multi-Colour
- SIAMP 99B Bottom Entry Inlet Float Valve 1/2 inch 15mm Plastic 30996007, White
- Twyford Optima49 Dual Flush Toilet Cistern Push Button Assembly (CF1003CP) Siamp

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-31*