Neomitis 22mm 3 Port Motorised Mid Position Valve | MTV322 | 230V Spring Return

Description

The Neomitis MTV322 22mm 3 Port Motorised Mid Position Valve provides reliable control of water flow between the boiler, radiator heating circuit and hot water cylinder circuit. Designed for pumped domestic central heating systems, it enables heating only, hot water only or both simultaneously, helping improve comfort and system efficiency.

With a 230V spring return actuator, 22mm compression connections, metal housing and an industry standard 5 core wiring loom, this mid position valve is a practical choice for homeowners and heating engineers replacing a faulty zone valve or completing a new installation.

22mm

Compression Connections

3 Port

Mid Position Valve

230V

50Hz Supply

6W

Power Consumption

10 Bar

Max Static Pressure

3 Years

Manufacturer Warranty

Electrical safety: Installation and wiring must be carried out by a competent person in accordance with the current BS 7671 wiring regulations. The valve must be earthed, appropriately fused and provided with a means of disconnection incorporating 3mm contact separation in all poles.

Compatibility: This is a 3 port mid position valve for systems where the radiator and hot water cylinder circuits are pumped. It is not a 2 port zone valve, check your existing valve configuration and wiring before ordering.

Service friendly design: The actuator can be replaced without draining the heating system, while the manual lever assists with filling and draining.

Key Features

Mid Position Control

Directs flow from the boiler to the radiator circuit, hot water cylinder or both at the same time.

Spring Return Operation

The spring return action returns Port A to the closed position when the valve is denergised.

Standard 22mm Compression

22mm compression fittings support straightforward replacement in common UK domestic heating systems.

Low Power Use

Consumes just 6W, helping keep the valve’s electrical demand minimal during operation.

Industry Standard Wiring

Includes a 1m five core cable with colour coded conductors for compatibility with standard heating controls.

Quiet Metal Construction

A durable metal housing and quiet operation make it suitable for everyday domestic heating installations.

Technical Specifications

General

Brand

Neomitis

Manufacturer Part Number (MPN)

MTV322

EAN / GTIN

3760025250145

Product Type

3 Port Motorised Mid Position Valve

Warranty

3 years, subject to manufacturer terms and conditions

Electrical

Voltage

230V~ 50Hz

Power Consumption

6W

Cable

1m, 5 core, colour coded

End Switch

Potential free end switch for boiler and/or pump control

Hydraulic & Installation

Connection Size

22mm compression

Valve Configuration

3 port mid position

Port A

Normally closed when de-energised

Maximum Differential Pressure

1 bar (22mm)

Maximum Static Pressure

10 bar

Fluid Temperature Range

+5°C to +80°C

Maximum Ambient Temperature

+50°C

Dimensions & Compliance

Dimensions (A x B x C)

87 x 55 x 60mm

Dimensions (D x E)

117 x 133mm

Standards

EN60730-1, EN60730-2-14, EN62311, EN50581

Declarations

EMC, LVD and RoHS

Frequently Asked Questions

What is a 3 port mid-position valve used for?

It controls the flow of heated water from the boiler to either the radiator circuit, the hot water cylinder circuit, or both circuits together.

Is the MTV322 suitable for my heating system?

It is intended for pumped domestic central heating systems using 22mm pipework and a mid position valve arrangement. Confirm the existing valve type and wiring configuration before replacement.

Can the actuator be replaced without draining the system?

Yes. The actuator is replaceable without draining down the heating system, which can make servicing more convenient.

What wiring connections does the valve use?

It uses a 1m five core cable with industry standard colour coded wiring: blue neutral, white heating on, grey hot water off, green/yellow earth and orange boiler and pump live.

Who should install this motorised valve?

Electrical installation should be completed by a competent person in line with BS 7671. The system must be earthed, suitably fused and include a means of isolation with 3mm contact separation in all poles.

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