MT Valves & Fittings product. Double non-return valve with AISI 304 stainless steel disc. Manufactured in GGG-40 cast iron with RAL5013 epoxy paint coating, AISI 420 steel shaft, EPDM seat and flanges drills size according to EN-1092 PN10 and PN16 / ANSI B16.5 Class 125/150. The valve withstands a maximum working pressure of 16 bar (250 psi) and a minimum working pressure of 0.02 to 0.04 bar. Model 5116 has an operating temperature range from -10 to 80°C and is ideal for use in hot and cold water, wastewater, foodstuffs, steam, alkaline liquids and weak acids. MT Industrial Division products are high-quality parts, specifically designed for industrial contexts. The entire range is manufactured under strict quality parameters and complies with the highest certifications in fluid handling. Available references and published specifications: • 5116040 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 11/2"; weight (kg): 1.31; small / large box: 1 / 20 • 5116050 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 2"; weight (kg): 1.44; small / large box: 1 / 18 • 5116065 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 2 1/2"; weight (kg): 2.05; small / large box: 1 / 12 • 5116080 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 3"; weight (kg): 2.75; small / large box: 1 / 4 • 5116100 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 4"; weight (kg): 4.11; small / large box: 1 / 4 • 5116125 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 5"; weight (kg): 6.26; small / large box: 1 / 1 • 5116150 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 6"; weight (kg): 8.24; small / large box: 1 / 1 • 5116200 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 8"; weight (kg): 14.92; small / large box: 1 / 1 • 5116250 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 10"; weight (kg): 25.35; small / large box: 1 / 1 • 5116300 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 12"; weight (kg): 38.09; small / large box: 1 / 1 • 5116350 — measures: STAINLESS STEEL DOUBLE DISC CHECK VALVE 14"; weight (kg): 48; small / large box: 1 / 1 Price and local availability on request. Source: https://mtspain.net/en/cast-iron-non-return-pn16-valve-with-stainless-steel-double-disc-epdm-seat-gasket/