20 x 20mm MDPE Stopcock Designed to enable the stoppage of water through a pipe line Polypropylene compression fitting For MDPE (medium density polyethylene) pipe Performs well under pressure, with impact resistant nut and body Suitable for use with underground cold water systems as it copes well with high thermal and mechanical stress Connect two 20mm diameter pipes Pressure Rating: 16 bar. Safety Factor: 3. Operating Temperature: 20°C @ 16 bar, 45°C @ 10.8 bar, 70°C @ 3.4bar. Standards: UNI 9561-9562, UNI EN 712-713-715, UNI ISO 7/1, ISO 14236, UNI 2233.Pack of 1 Couplings.