---
product_id: 49281496
title: "4373300 | Membrane Inlet Valve"
brand: "grohe"
price: "£4.44"
currency: GBP
in_stock: true
category: "Grohe"
url: https://www.desertcart.co.uk/products/49281496-4373300-membrane-inlet-valve
store_origin: GB
region: United Kingdom
---

# Leak-Proof Membrane Design Precision Threaded Connectors 3.5cm German Engineered Reliability 4373300 | Membrane Inlet Valve

**Brand:** grohe
**Price:** £4.44
**Availability:** ✅ In Stock

## Summary

> 💧 Upgrade your flush game with leak-proof precision!

## Quick Answers

- **What is this?** 4373300 | Membrane Inlet Valve by grohe
- **How much does it cost?** £4.44 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/49281496-4373300-membrane-inlet-valve)

## Best For

- grohe enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Thousands:** 4.2-star rating from 700+ users who fixed leaks and stopped constant refills instantly.
- • **Optimized Flow Control:** Globe valve design guarantees precise water regulation, eliminating overflows and leaks.
- • **Seamless Compatibility:** Designed exclusively for GROHE inlet valves ensuring perfect fit and function.
- • **Effortless Installation:** Threaded 3.5cm connectors make replacement quick and hassle-free—no plumber needed.
- • **Durable German Craftsmanship:** Manufactured in Germany with premium rubber for long-lasting leak prevention.

## Overview

The GROHE 4373300 Membrane Inlet Valve is a high-quality, German-engineered replacement part designed exclusively for GROHE inlet valves. Featuring durable rubber construction and precision 3.5cm threaded connectors, it ensures a perfect fit and reliable leak prevention. Its globe valve design optimizes water flow, stopping leaks and constant cistern refills, backed by strong customer satisfaction.

## Description

Free delivery and returns on all eligible orders. Shop GROHE 4373300 | Membrane Inlet Valve.

## Features

- Suitable only for GROHE inlet valves
- Red/Clear

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0031ZT0CU |
| Best Sellers Rank | 194,498 in DIY & Tools ( See Top 100 in DIY & Tools ) 201 in Tap & Valve Washers |
| Brand | GROHE |
| Connector Type | Threaded |
| Country of Origin | Germany |
| Customer Reviews | 4.2 4.2 out of 5 stars (737) |
| Exterior Finish | StarLight Chrome |
| Global Trade Identification Number | 04005176158926 |
| Included Components | 1 x Grohe Adagio Inlet Float Valve Diaphragm Washer 4375800M |
| Inlet Connection Size | 3.5 Centimeters |
| Inlet Connection Type | FIP |
| Item Dimensions | 40 x 35 x 20 millimetres |
| Item Type Name | Adagio Inlet Float Valve Diaphragm Washer 4375800M |
| Manufacturer | Grohe UK Ltd (EUR account) |
| Manufacturer Warranty Description | Not applicable. |
| Material | Rubber |
| Model Number | 43733000 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 3.5 Centimeters |
| Outlet Connection Type | NPT |
| Part Number | 43733000 |
| Size | 28 cubic centimeters |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | CSA, ULC |
| Thread Size | 3.5 centimeters |
| Thread Type | NPT |
| Unit Count | 1.0 count |
| Valve Type | Globe Valve |

## Product Details

- **Brand:** GROHE
- **Exterior finish:** StarLight Chrome
- **Inlet connection size:** 3.5 Centimeters
- **Inlet connection type:** FIP
- **Item dimensions L x W x H:** 40 x 35 x 20 millimetres
- **Material:** Rubber
- **Number of ports:** 2
- **Outlet connection size:** 3.5 Centimeters
- **Outlet connection type:** NPT
- **Specification met:** CSA, ULC

## Images

![4373300 | Membrane Inlet Valve - Image 1](https://m.media-amazon.com/images/I/511DBKriEzL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Frequently Bought Together

- GROHE 4373300 | Membrane Inlet Valve
- Grohe 47050000 1/2-Inch Thermo-Element
- Grohe 47111000 1/2″ Thermo-element Cartridge, Unfinished

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**Shop now:** [https://www.desertcart.co.uk/products/49281496-4373300-membrane-inlet-valve](https://www.desertcart.co.uk/products/49281496-4373300-membrane-inlet-valve)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-16*