MT Valves & Fittings product. Available references and published specifications: • 52051142250 — measures: BUTTERFLY VALVE WAFER TYPE 10"SS DISC NBR DOUBLE ACTING ACT.; weight (kg): 26.44; small / large box: 1 / 1 • 52051142200 — measures: BUTTERFLY VALVE WAFER TYPE 8" SS DISC NBR DOUBLE ACTING ACT.; weight (kg): 20.25; small / large box: 1 / 1 • 52051142150 — measures: BUTTERFLY VALVE WAFER TYPE 6" SS DISC NBR DOUBLE ACTING ACT.; weight (kg): 10.69; small / large box: 1 / 1 • 52051142100 — measures: BUTTERFLY VALVE WAFER TYPE 4" SS DISC NBR DOUBLE ACTING ACT.; weight (kg): 7.43; small / large box: 1 / 1 • 52051142080 — measures: BUTTERFLY VALVE WAFER TYPE 3" SS DISC NBR DOUBLE ACTING ACT.; weight (kg): 6.08; small / large box: 1 / 1 • 52051142065 — measures: BUTTERFLY VALVE WAFER TYPE 21/2" SS DISC NBR DOUBLE ACTING A; weight (kg): 4.87; small / large box: 1 / 1 • 52051142050 — measures: BUTTERFLY VALVE WAFER TYPE 2" SS DISC NBR DOUBLE ACTING ACT.; weight (kg): 4.37; small / large box: 1 / 1 Price and local availability on request. Source: https://mtspain.net/en/butterfly-valve-wafer-type-stainless-steel-disc-nbr-soft-seat-with-actuator-double-acting/