Vaillant Expansion Vessel & PRV Kit 964101 CD 18R (GC No. 4153203) Glowworm Flow Switch 0020097207

Glowworm Flow Switch 0020097207

drains and other visual air testing

Potterton Ignition Electrode 720222801

Was 87154072960

REGQ140 - Quick Blow Fuse 20mm 1A (3)

Vaillant Expansion Vessel & PRV Kit 964101 CD 18R (GC No. 4153203) Glowworm Flow Switch 0020097207Kit contains: Expansion vessel Pressure relief valve GasPart Vessel Kits make boiler pressure issue repairs as easy as possible. Good practice suggests replacing a PRV at the same time as a faulty vessel. A faulty vessel can cause damage to the PRV resulting in the boiler still showing a low pressure fault. Buying both together is simple and will help eradicate further problems.