Application: Water supply, pipe connection and water treatment plants, sport irrigation and gardening, agriculture and horticulture irrigation. Easy and fast assembly without any particular preparation of the pipe. Materials: Top quality raw materials which makes S16 fittings highly resistant and reliable in time (up to 50 years), suitable for drinking water and environment compatible. Body, nut, thrust ring: virgin polypropylene (PP-B), high mechanical resistant and thermal stability in course of time. Top UV resistant master-batch are used (grade 8-ASTM D2565) for colored nuts. Grip ring: copolymer polyacetal resin (POM), white color. Conical gasket: rubber NBR or EPDM, hardness 70sh, black color Reinforcement ring: only for female threads >=1 ½ “, stainless steel Working temperature: -10/+45 °C Nominal pressure (PN) and product approvals: S16 fittings are designed and suitable to be used at PN16 pressure rate. Fittings are tested and certified by major international approval institutions, such as: KIWA (Netherlands), DVGW (Germany), ACS (France), WRAS (UK), IIP (Italy), ETA (Denmark)