he Glow-worm 0020118190/SD Pressure Relief Valve (PRV) is a genuine 3-bar safety valve designed to protect your boiler and heating system from dangerous over-pressurisation. When pressure rises above safe limits, the PRV automatically releases excess water, preventing damage to internal components, pipework, and radiators.

A faulty or dripping PRV can cause continual pressure loss, visible discharge outside, or boiler lockouts. Installing this genuine Glow-worm replacement restores safe operating pressure and reliable system performance.

Key Features

• Genuine Glow-worm 3-bar pressure relief valve

• Protects the heating system from excessive pressure

• Automatically releases excess pressure for safe operation

• Helps resolve pressure drop, leaks, and safety lockouts

• Direct-fit replacement for quick and accurate installation

Compatible With

This PRV is suitable for:

• Glow-worm Betacom

• Glow-worm Easicom

• Glow-worm Ultimate

Please verify the part number (0020118190/SD) with your boiler documentation to ensure correct compatibility.