Plasson Black 2 Blue range offers a dedicated MDPE mechanical coupler which connects directly to Imperial pipe without the need for adaptors. Providing a reliable and durable way of jointing water supply pipes, requiring no special tools to use effectively. WRAS Approved Product - will be accepted by water companies as suitable for drinking water systems . A quick and simple way to connect MDPE pipe to imperial pipe. No adaptors required. Long service life - designed to last in use for over 50 years. Made of virgin Polypropylene - incredibly durable, unlikely ever to break. Captive 'O' ring - ensuring ultimate sealing performance. PN16 pressure rated