Dedicated 15/22mm open ended spanner designed to fit compression nuts

Cranked handle designed to reach and fit most hot water tank immersion heater elements

Multi-purpose radiator spanner suits 3/8 and 10mm square vent plugs, vent key, and groved end to fit internal lug valves

Stepped combination ratchet spanner for installing and removing most radiator valve tails, lugs, nipples and tank connectors

If not properly inhibited, central heating systems fall foul to electrolytic corrosion, scale and oxidation which gathers inside the wet system. This affects heat output, flow rate, efficiency and ultimately...