Glow-worm Pump Body 0020173566

The pump body is the cast housing that forms the wet end of the circulating pump on a Glow-worm Energy 35 Store boiler. It holds the impeller chamber and provides the connections through which heating water is circulated around the system. The pump head mounts to this body, so the housing must be sound and free from distortion or corrosion for the pump to operate correctly.

• Water weeping or dripping from the pump housing or its gasket faces
• Visible corrosion, pitting or cracking on the cast body
• Persistent system pressure loss traced to the pump area
• Noise or vibration from the pump that continues after the head has been checked or replaced
• Scaling or debris build-up inside the impeller chamber restricting flow

• Confirm the appliance model is the Glow-worm Energy 35 Store
• Check the part number 0020173566 against the manufacturer's parts list for your appliance
• Establish whether the fault lies with the pump body or the pump head, as these are separate components
• Isolate and drain the appliance before any work on the pump assembly