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PCL Air Line Reducing Union 3/8" to 1/4" BSP Male Taper Thread

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Genuine PCL reducing unions 3/8" to 1/4" BSP male taper thread. Plated finish for longer life. PCL part number HC6899.

The PCL reducing union is suitable for most compressed air applications. designed and manufactured alongside PCL couplings. These reducing unions have become the benchmark in the UK for quality and reliability.

Used to reduce and adapt threaded air fittings, couplings and connectors.

Sizing advice

BSP thread sizes can be confusing; BSP size is not the same size as the physical thread diameter. When measuring BSP male taper threads the measurement should be taken halfway along the length of the thread. BSP female threads are always parallel along the whole length of the thread – see size guide below.

BSP size                 Diameter of thread

¼”           -               13.1mm Approx.

3/8”         -               16.6mm Approx.

½”           -               21.0mm Approx.