Used for connecting to polyethylene water supply pipes with a maximum pressure of 10 bar, corresponding to a temperature of 20°C. Components: body made of polypropylene, black; bolts and nuts made of galvanized steel; NBR O-ring; INOX AISI 430 stiffening ring. Reference standards: thread according to DIN 2999, BS 21, ISO R 7/1 up to D160 mm; ISO 228 for D180–D315 mm. Pipe coupling: PE according to DIN 8072-8074, ISO 3607 and EN ISO 12201; PVC according to ISO 161, EN ISO 1452, BRL-K502; PP according to ISO 3609, UNI 8318, DIN 807.