Connection Size B15mmConnection Size A28mmPipe Connection TypeCompressionTypePipe Fittings - Couplers & ConnectorsSuitable forHeating systems up to 100 litres, to improve heat transfer and save heating costs. Do not use with PRIMATIC single feed cylinders.Pack Quantity20MaterialBrassDiameter28mm x 15mmCapacity250ml per 100 litre system capacityApplicationTreat via partially drained radiator or through the feed and expansion tankSupplier Part Number500478Manufacturer Model NoP901.21Brand NamePlumbright