Biervatkoppeling, een type vatkoppeling Roestvrijstalen biervatconnector, accessoire voor doseerapparatuur

This is a fairly unusual coupler it seems so I was lucky to get this one so quickly from Amazon (for a Camden Hells keg.) For those wanting to use John guest pushfit connections you need to order two 3/8" x 5/8" BSP fittings which are available from Ebay etc.