1 set. Color: As pictured. Material: Plastic. Crankcase forced ventilation one-way valve exhaust valve.

Bleeding your radiators makes them work more efficiently and helps to save you money. An essential part of central heating maintenance, flushing the air out of your heating circuit can lead to pressure loss in the boiler so you may have to rebalance your system. Read on to find out how to bleed your radiators.