直流式柱塞閥概述：
主要直流式柱塞閥的優(yōu)點是介質在內流動平衡轉彎拐角少。直通式流線為梯形角式流線為角形而直流式流線為波浪形，根據(jù)對三種截止閥，流阻系數(shù)的測定DN100mm，直通式截止閥流阻系數(shù)為4.1 ，DN100mm角式截止閥流阻系數(shù)為3.8，而DN100mm直流式截止閥流阻系數(shù)為0.5,阻力大大降低。
直流式柱塞閥連接、結構尺寸：
DN(mm)
尺寸（mm） | U45SM-16C、P、R U45H-16C、P、R |
15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 622 | 698 | 787 | 914 |
H | 180 | 200 | 220 | 260 | 280 | 310 | 350 | 390 | 430 | 460 | 550 | 650 | 750 | 860 | 980 | 1110 |
W | 100 | 100 | 120 | 140 | 160 | 180 | 200 | 240 | 270 | 310 | 340 | 400 | 520 | 640 | 760 | 900 |
D | 95 | 105 | 115 | 135 | 145 | 160 | 180 | 195 | 215 | 245 | 280 | 335 | 405 | 460 | 520 | 580 |
K | 65 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 | 470 | 525 |
T | 12 | 12 | 12 | 12 | 13 | 13 | 12 | 17 | 17 | 19 | 21 | 23 | 27 | 28 | 30 | 32 |
n-φ | 4-14 | 4-14 | 4-14 | 4-18 | 4-18 | 4-18 | 4-18 | 8-18 | 8-18 | 8-18 | 8-23 | 12-23 | 12-25 | 12-25 | 16-25 | 16-30 |
DN(mm)
尺寸（mm） | U45SM-25C、P、R U45H-25C、P、R |
15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 622 | 698 | 787 | 914 |
H | 180 | 200 | 220 | 260 | 280 | 310 | 350 | 390 | 430 | 470 | 550 | 650 | 750 | 860 | 990 | 1110 |
W | 100 | 100 | 120 | 140 | 160 | 180 | 200 | 240 | 280 | 310 | 340 | 400 | 520 | 640 | 760 | 900 |
D | 95 | 105 | 115 | 135 | 145 | 160 | 180 | 195 | 230 | 270 | 300 | 360 | 425 | 485 | 550 | 610 |
K | 65 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 190 | 220 | 250 | 310 | 370 | 430 | 490 | 550 |
T | 14 | 14 | 14 | 15 | 15 | 17 | 19 | 19 | 21 | 25 | 27 | 31 | 33 | 36 | 40 | 44 |
n-φ | 4-14 | 4-14 | 4-14 | 4-18 | 4-18 | 4-18 | 4-18 | 8-18 | 8-23 | 8-25 | 8-25 | 12-25 | 12-30 | 16-30 | 16-34 | 16-34 |
