MYSON MPE322 Three port mid-position motorised Power Extra valve to simultaneously control the central heating and hot water circuits in domestic fully pumped central heating systems. Suitable for 22mm pipe. For convenience the two neon indicator lights illuminate indicating which port is open. Manual override lever for use when filling, venting or draining the system. Fitted with a 1.1m length 4-core cable, and is supplied with two screws for securing to the valve body. Compatible replacement to all leading makes., Weight: 2.18919026166 pounds, Manufacturer: Purmo Group Ltd.