Worcester Bosch Adapter Flow Limiter 87186444960

The Worcester Bosch 87186444960 is an adapter flow limiter used in Worcester Bosch gas boilers. It forms part of the hydraulic connection on the appliance and restricts the volume of water passing through that point, keeping flow within the design parameters of the heat exchanger and domestic hot water circuit. It belongs to the adaptors and connectors group of spares and is fitted across the Greenstar family of combi and system boilers.

• Hot water flow at the outlets is weaker than it should be, or varies between draws
• Flow rate drops away as the tap is opened further rather than increasing
• Scale or system debris has collected in the limiter and restricted the bore
• Water weeps or drips from the adapter connection
• The boiler struggles to hold a steady domestic hot water temperature and cycles during a draw-off

• Check the GC number and the appliance serial plate to confirm the part matches your model.
• If you are replacing an older fitment, confirm the previous numbers 8-716-113-902-0 and 87161139020 against the part you are removing.
• Inspect the sealing washers and O-rings at the connection and renew them if they are compressed or perished.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.