三、Y43H蒸汽减压阀主要外形尺寸 | (法兰尺寸PN1.6,PN2.5MPa按JB/T79-94标准,PN4.0,PN6.4MPa按JB/T79-94标准) | 公称压力 PN(MPa) | 公称通径 DN(MM) | 尺寸(MM) | L | H1 | H2 | 1.6 | 20 | 160 | 89 | 312 | 25 | 180 | 101 | 315 | 32 | 200 | 107 | 320 | 40 | 220 | 113 | 325 | 50 | 250 | 120 | 335 | 65 | 260 | 125 | 340 | 80 | 310 | 140 | 360 | 100 | 350 | 150 | 390 | 125 | 400 | 190 | 415 | 150 | 450 | 205 | 440 | 200 | 500 | 220 | 475 | 250 | 600 | 270 | 545 | 300 | 800 | 335 | 575 | 350 | 850 | 390 | 650 | 400 | 900 | 430 | 705 | 2.5 | 25 | 200 | 101 | 315 | 32 | 200 | 107 | 320 | 40 | 220 | 113 | 325 | 50 | 250 | 120 | 335 | 65 | 260 | 125 | 340 | 80 | 310 | 140 | 360 | 100 | 350 | 150 | 390 | 125 | 400 | 190 | 425 | 150 | 450 | 210 | 445 | 200 | 500 | 245 | 485 | 250 | 600 | 270 | 545 | 300 | 800 | 335 | 575 | 350 | 850 | 390 | 650 | 400 | 900 | 430 | 710 | 4.0 | 25 | 200 | 101 | 315 | 32 | 220 | 107 | 320 | 40 | 240 | 113 | 325 | 50 | 270 | 120 | 335 | 65 | 280 | 140 | 365 | 80 | 330 | 150 | 385 | 100 | 380 | 150 | 385 | 125 | 450 | 190 | 425 | 150 | 500 | 210 | 445 | 200 | 560 | 245 | 485 | 6.3 (6.4) | 25 | 200 | 110 | 370 | 32 | 220 | 125 | 380 | 40 | 240 | 130 | 395 | 50 | 270 | 135 | 405 | 65 | 300 | 145 | 410 | 80 | 330 | 170 | 445 | 100 | 380 | 175 | 455 | 125 | 450 | 245 | 504 | 150 | 500 | 280 | 555 | 200 | 560 | 310 | 581 |
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