The Worcester Bosch charging key assembly is part of the unit's filling loop. It is used in central heating boilers and systems, allowing the user to manually top-up the amount of water in the system if the pressure drops. External loops are usually removable in keeping with regulations, while internal filling loops normally feature a key that can be removed to interrupt the connection after use.
Part of the extensive range of Worcester accessories
Technical specification
Waist Sizeaa48cb11gtTypeFilling KeyColourGreySupplier Part Number87161045910Brand NameWorcester Bosch
Reviews
Worcester Bosch Small Filling Charging Key Assembly 87161045910.