Superior Structure: Balanced trim, raise the allowable pressure shut-off valve tightness: Optional tight seal, soft seal. Bellows seal type to form a complete movement of the valve stem seal, blocking the way out the possibility of media leaks Overall structure: the entire height can be reduced by about 30% to about 30% by weight reduce piston actuator operating force, Technical parameters using a large pressure difference operation mode the open air, air-to-close valve sleeve structure M N P single-seat two-seater signal range 2bar seal level Ⅲ, Ⅳ, Ⅴ, Ⅵ ambient temperature of -30 ℃ ~ + 70 ℃ (Explosion See Locator parameter type) Performance standards GB / T4213-92 options Q- completely cut type with hand wheel S- E- explosion-proof (explosion-proof electrical Locator grade optional: flameproof, intrinsically safe) X- band feedback signal (electrical positioner with feedback or reprovision position transmitter) Accessories: hand wheel, limit switch, air filter pressure reducer, solenoid valves, diaphragm, flanged body parameter nominal PN10, PN16, PN40, PN46 flanged connections, (special: welded) Body material HT200, ZG230-450, ZG1Cr18Ni9Ti, ZG1Cr18Ni12MO2Ti Spool Material 1Cr18Ni9T, OCr18Ni12MO2Ti, 1Cr18Ni9Ti, Stellite surfacing sealing material PTFE, hard seal, special high-temperature material ripple pipe 1Cr18Ni9Ti PTFE packing, flexible graphite putter liner rubber asbestos gaskets 2Cr13, 1Cr18Ni9Ti asbestos spiral wound gasket flange standard GB9113-88, JB / T79-94, GB2555-81 fluid temperature -60 ~ 450 ℃ technology parameter nominal diameter DN (mm) 15 20 25 32 40 50 65 80 100 125 150 200 Rated flow coefficient (KV) single-seat, two-seat 5 7 1,120,304,875,120,190,300 480 760 sleeve 1,120,304,875 120,180,300,480,760 rated stroke (mm) 8 12 20 25 40 50 Effective area (C㎡) LDZD type 100 200 400 600 1000 LDZS type 100125160250 allowable leakage hard seal 1 / h General: 10ˉ4 × valve rated capacity ; tight type: single, two-seater: 1.2 × 10ˉ7, sleeve 5 × 10ˉ6 × valve rated capacity passenger Class VI soft seal to allow pressure (MPa) LDZD1 positive effect 6.4 5.09 2.91 1.85 2.18 1.33 1.52 0.99 0.62 0.60 0.69 0.39 LDZD1 reaction 6.4 6.4 3.88 2.47 2.91 1.77 2.03 1.32 0.83 0.80 0.92 0.52 LDQD2 6.4 6.1 3.5 2.3 3.0 1.9 1.9 1.5 0.93 0.84 0.65 0.47 Dimensions and Weight Table Nominal size 15 20 25 32 40 50 65 80 100 125 150 200 A φ196 φ232 φ308 φ394 φ498 L PN16,40 130 150 160 180 200 230 290 310 350 400 480 600 PN64 210 230 230 260 260 300 340 380 430 500 550 600 H PN16,40 305 340 345 370 380 390 475 490 500 765 825 927 PN64 320 350 354 372 382 397 473 475,517,805,882,815 bellows seal type 375 409 414 431 441 468 555 570 613 855 915 1017 H1 PN16,40 50 53 58 70 75 83 93 100 110 125 148 170 PN64 60 65 70 77.5 85 90 100 85 125 148 170 208 H2 PN16 115 115 121 130 140 153 178 190 200 260 320 380 PN40 125 125 130 140 150 160 185 200 220 280 320 360 PN64 150 150 160 170 180 200 230 250 282 310 430 480 H3 PN16,40 404 415 428 448 448 468 561 578 590 886 1008 1120 PN64 365 430 498 528 528 530 535 540 600 890 1208 1305 bellows seal type 395,465,478,509,509 5,486,416,586,709,761,098 1210 Weight (Kg) Standard 1010121518 233,545,607,590,120 bellows seal type in 12 12 14 1,720,263,848,647,995,125 1) The product performance and indicators implement GB / T4213-92; 2) the table if the value is greater than the nominal pressure to allow pressure is Take nominal values ??less than or equal nominal value will remain unchanged; 3) table allows the use of standard cylinder is value, can be equipped with different cylinders allow pressure increase.