Y42X spring diaphragm valve spring films are direct-acting valve. Y42X spring diaphragm valve mainly by adjusting the spring, diaphragm, piston, valve seats, valve and other parts. Use direct sensing downstream pressure-driven diaphragm valve, control valve opening degree complete vacuum regulator function. Y42X spring diaphragm valve in city buildings, high-rise building of hot and cold water supply system, can replace conventional water partition, saving equipment. Also available in the usual hot and cold water distribution network, from the vacuum regulator role. Y42X direct acting valve spring film regulator, the regulator steady action for piping water and non-corrosive liquid medium. The main technical parameters Nominal pressure (Mpa) 1.0 1.6 2.5 Shell test pressure (Mpa) * 1.5 2.4 3.75 Sealing test pressure (Mpa) 1.0 1.6 2.5 maximum inlet pressure (Mpa) 1.0 1.6 2.5 outlet pressure range (Mpa) 0.2-0.8 0.2 -1.0 0.4-1.6 pressure characteristic deviation (Mpa) △ P2P GB12244-1989 flow characteristic deviation (Mpa) P2G GB12244-1989 leakage 0 Operating temperature 0 ℃ -80 ℃ *: shell test does not include the diaphragm, the main valve cover Part Material Part name Material Body parts Bonnet WCB seat bottom stem 2Cr13 2Cr13 2Cr13 valve Cylinder 2Cr13 / 25 (hard chrome plated) Piston 2Cr13 O-ring seals of nitrile rubber Nitrile rubber diaphragm is sandwiched fabric Ding nitrile rubber adjusting spring 60Si2Mn flow coefficient Cv DN 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 500 Cv 1 2.5 4 6.5 9 16 25 36 64 100 140 250 400 570 780 1020 1500 main dimensions nominal diameter DN Dimensions LH Hl 15 160 225 90 20 160 265 98 25 180 265 110 32 200 265 110 40 220 320 125 50 250 320 125 65 280 325 130 80 310 385 160 100 350 385 170 125 400 430 200 150 450 430 210 200 500 560,240,250,650,690 290,300,800,800,335 350,850,880,375,400 9,009,804,054,509,001,100 4,555,009,501,130,465