---
product_id: 48419985
title: "Myson MPE222 Replacement 4 wire ACT222 Spare Actuator ONLY 421101 for MPE 222, MPE2 3/4\", MSV222 22mm 2 Port Power Extra Motorised Zone Valve"
brand: "myson"
price: "¥36022"
currency: JPY
in_stock: true
reviews_count: 8
category: "Myson"
url: https://www.desertcart.jp/products/48419985-myson-mpe222-replacement-4-wire-act222-spare-actuator-only-421101
store_origin: JP
region: Japan
---

# 4-wire power connection Neon indicator light Double insulated, no earth needed Myson MPE222 Replacement 4 wire ACT222 Spare Actuator ONLY 421101 for MPE 222, MPE2 3/4", MSV222 22mm 2 Port Power Extra Motorised Zone Valve

**Brand:** myson
**Price:** ¥36022
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your heating game with precision and safety!

## Quick Answers

- **What is this?** Myson MPE222 Replacement 4 wire ACT222 Spare Actuator ONLY 421101 for MPE 222, MPE2 3/4", MSV222 22mm 2 Port Power Extra Motorised Zone Valve by myson
- **How much does it cost?** ¥36022 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/48419985-myson-mpe222-replacement-4-wire-act222-spare-actuator-only-421101)

## Best For

- myson enthusiasts

## Why This Product

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

## Key Features

- • **Safe & Compliant:** Double insulated construction eliminates need for earth wiring
- • **Durable & Lightweight:** Compact 500g actuator built to last with ISO9002 certification
- • **Instant Status Insight:** Built-in neon indicator light for clear operational feedback
- • **Plug & Play Replacement:** Direct fit for MPE222, MPE2 3/4", MSV222 22mm 2-port valves
- • **Effortless Power Control:** 4-wire design ensures reliable power to open and spring to close action

## Overview

The Myson MPE222 ACT222 replacement actuator is a compact, double insulated 4-wire motorized zone valve actuator designed for seamless fit on MPE222, MPE2 3/4", and MSV222 22mm 2-port valves. Featuring a neon indicator light for operational clarity and powered by AC 240V, it offers reliable power-to-open and spring-to-close functionality, ensuring efficient heating system control without the need for earth wiring.

## Description

Product Description Myson ACT222 (421101) replacement actuator to fit MPE222, MPE2 3/4\\", MSV222 22mm 2 Port Power Extra Motorised Zone Valve. Box Contains 1 x ACT222 actuator, 2 screws and set of instructions.

Review: Superb Service and Product - Superb delivery, a quick isolation of the heating system and 4 valve screws and 4 wires later the heating system is perfect. Great service ad superb product
Review: Perfect replacement - Like for like and easy to install. If changing yourself, it is vital that you isolate your boiler from the power supply along with the system as there is a direct live from the boiler. Not an electrician or plumber but found this out on-line. This is my fourth in 12 years. They break and the manufacturer needs to get this sorted.

## Features

- Replacement Actuator for MPE/MSV222 2 Port Valves
- Power to Open, Spring to Close
- Neon Indicator Light
- Double Insulated - No Earth Required
- 4 Wire

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B006MD93ZC |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 53,447 in DIY & Tools ( See Top 100 in DIY & Tools ) 552 in Central Heating System Accessories |
| Certification | ISO9002 |
| Customer Reviews | 4.2 4.2 out of 5 stars (239) |
| Date First Available | 15 Dec. 2011 |
| Item Package Quantity | 1 |
| Item Weight | 500 g |
| Item model number | ACT222 |
| Manufacturer | Myson Controls |
| Material | Plastic |
| Number of Pieces | 1 |
| Part Number | ACT222 |
| Power Source | AC |
| Product Dimensions | 14.7 x 11.1 x 8.4 cm; 500 g |
| Size | 111 mm x 147 mm x 84 mm |
| Usage | Indoor use only |
| Voltage | 240 |

## Product Details

- **Brand:** Myson
- **Global Trade Identification Number:** 05013117421106
- **Inlet connection size:** 22 Millimeters
- **Item dimensions L x W x H:** 14.7 x 11.1 x 8.4 centimetres
- **Manufacturer:** Myson Controls
- **Material:** Plastic
- **Number of ports:** 2
- **Outlet connection size:** 22 Millimeters
- **Outlet connection type:** BSPT
- **Specification met:** ISO9002

## Images

![Myson MPE222 Replacement 4 wire ACT222 Spare Actuator ONLY 421101 for MPE 222, MPE2 3/4", MSV222 22mm 2 Port Power Extra Motorised Zone Valve - Image 1](https://m.media-amazon.com/images/I/61balfhrivL.jpg)

## Questions & Answers

**Q: I cannot find the activator MSDV3F anywhere will this do instead?**
A: Hi
MSDV3F is a 3 way valve with 3pin electrical connection.  MPE222 is 2 way actuator head only. with 4 wires

Regards David

**Q: mine says 6w 36 MA will this wirk?**
A: Mine said 6w 36ma even though it's a single, one in,one out. Replaced it with this one with fingers crossed, and work perfect now got heating again, hope this helps anyone else.

**Q: My honeywell mid position valve has 5 wires but the myson mid position has 4 will it still work? there is no white wire?**
A: Are you sure you need this model as my actuator head was for a 2 port not a 3 port mid position valve. Please double check what head you need ie. 2 or 3. Hope this helps.

**Q: What is the life of a myson 222 actuator**
A: That’s a how long is a piece of string question. The one I replaced when I bought this one lasted about 15 years

## Customer Reviews

### ⭐⭐⭐⭐⭐ Superb Service and Product
*by L***K on 6 December 2025*

Superb delivery, a quick isolation of the heating system and 4 valve screws and 4 wires later the heating system is perfect. Great service ad superb product

### ⭐⭐⭐⭐⭐ Perfect replacement
*by J***5 on 5 February 2021*

Like for like and easy to install. If changing yourself, it is vital that you isolate your boiler from the power supply along with the system as there is a direct live from the boiler. Not an electrician or plumber but found this out on-line. This is my fourth in 12 years. They break and the manufacturer needs to get this sorted.

### ⭐⭐⭐⭐⭐ Excellent piece of kit
*by L***M on 19 January 2022*

Very glad to get hold of this myson power extra actuator as it avoided any plumbing. The actuator is fitted now and working well. The old one lasted from 2004, so hope the new one is as good. Just make sure you turn power of at mains because there is a permanent live wire, remove one wire at a time from old appliance and replace it with same wire on new appliance. Ensure all screws are properly tightened and Bob's your uncle.

## Frequently Bought Together

- Myson MPE222 Replacement 4 wire ACT222 Spare Actuator ONLY 421101 for MPE 222, MPE2 3/4", MSV222 22mm 2 Port Power Extra Motorised Zone Valve
- MYSON ACT222-2 Port Actuator Head Only 22mm
- Caleffi - 22mm Inlet Control Multibloc Valve Group 533002CST

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*