---
product_id: 104092069
title: "Adjustable Thermostatic Mixing Valve 1/2 Inch 30 - 65 °C Anti-scale 521400"
brand: "caleffi"
price: "1036.68 DT"
currency: TND
in_stock: true
reviews_count: 1
url: https://www.desertcart.tn/products/104092069-adjustable-thermostatic-mixing-valve-1-2-inch-30-65-c
store_origin: TN
region: Tunisia
---

# Max pressure 14 bar Adjustable temp range 30-65°C Dezincification resistant alloy Adjustable Thermostatic Mixing Valve 1/2 Inch 30 - 65 °C Anti-scale 521400

**Brand:** caleffi
**Price:** 1036.68 DT
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay in control of your comfort with precision plumbing tech ⚙️

## Quick Answers

- **What is this?** Adjustable Thermostatic Mixing Valve 1/2 Inch 30 - 65 °C Anti-scale 521400 by caleffi
- **How much does it cost?** 1036.68 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/104092069-adjustable-thermostatic-mixing-valve-1-2-inch-30-65-c)

## Best For

- caleffi enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable dezincification resistant alloy body with sleek chrome finish
- • **Certified Quality:** Meets EN 1287 standards for safety and performance
- • **High Pressure Ready:** Operates reliably up to 14 bar for demanding systems
- • **Anti-Scale Innovation:** Adjustable thermostatic valve reduces scale buildup, extending system life
- • **Precision Temperature Control:** Maintain perfect water temp despite pressure fluctuations

## Overview

The Caleffi Adjustable Thermostatic Mixing Valve 1/2 Inch (model 521400) ensures consistent domestic hot water temperature between 30-65°C, even with fluctuating inlet pressures up to 14 bar. Crafted from dezincification resistant alloy with a polished chrome finish, it’s built for durability and certified to EN 1287 standards. Its anti-scale design helps prolong system lifespan, making it a smart upgrade for modern plumbing systems.

## Description

Function The thermostatic mixing valve is used in systems that produce domestic hot water. It is designed to maintain the preset temperature of the mixed water delivered to the user outlet, when there are variations in the temperature and pressure of the hot and cold water at the inlet, or in the drawn-off flow rate. These devices are also available with fittings complete with strainers and check valves on the hot and cold water inlets.

## Features

- Adjustable anti-scale thermostatic mixing valve
- Dezincification resistant alloy body. Chrome plated
- Max. working pressure: 14 bar
- Max. inlet temperature: 85°C
- Certified to EN 1287

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Caleffi |
| Part Number | 521400 |
| Product Dimensions | 15.2 x 13.4 x 4.5 cm; 1.05 kg |
| Item model number | 521400 |
| Size | 1/2 inch |
| Colour | Chrome |
| Style | Adjustable |
| Finish | Polished |
| Material | Metal |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Number Of Holes | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 1.05 kg |

## Product Details

- **Size:** 1/2 inch
- **Material:** Metal
- **Brand:** Caleffi
- **Colour:** Chrome
- **Item dimensions L x W x H:** 15.2 x 13.4 x 4.5 centimetres
- **Connector type:** Adapter/Reducer
- **Thread size:** 1/2 inch
- **Exterior finish:** Chrome
- **Thread type:** BSP
- **Number of pieces:** 1

## Images

![Adjustable Thermostatic Mixing Valve 1/2 Inch 30 - 65 °C Anti-scale 521400 - Image 1](https://m.media-amazon.com/images/I/61YvFBqnd9L.jpg)

## Customer Reviews

### ⭐ I wish I hadn't get rid of the box
*by L***I on 3 February 2020*

Please check if your valve have the "check valves" included. Which in my case wasn't.Without them you will have for example hot water coming through cold water outlet.Better to get one of those valves from screwfix or toolstation.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-31*