The Potterton V4073A1039 Diverter Valve is a genuine 3-port motorised valve designed to control the flow of water between heating and hot water circuits in compatible central heating systems. This “mid-position” valve directs water to radiators, the hot water cylinder, or both—ensuring efficient system operation and responsive temperature control.

A faulty diverter valve can cause symptoms such as no hot water, no heating, lukewarm water, noisy operation, or slow system response. Replacing it with this high-quality Potterton valve restores smooth switching and reliable performance.

Key Features

• Genuine Potterton 3-port motorised diverter valve

• Mid-position design for controlling heating and hot water flow

• Ensures efficient system performance and correct water distribution

• Helps resolve heating/hot water faults and poor switching

• Durable, dependable construction with replaceable actuator

• Direct-fit replacement for straightforward installation

Compatible With

Suitable for many Potterton, Baxi, Main, and other UK heating systems that use the V4073A mid-position valve.

Please verify compatibility with your system or existing valve before ordering.