DYH pneumatic regulative butterfly valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
DYH pneumatic regulative butterfly valves
structures
DYH pneumatic regulative butterfly valve constructral diagram(pic1)
DYH pneumatic regulative butterfly valve constructral diagram(pic2)
features:
DYH671 pneumatic diaphragm adjustable butterfly valve is a rotating regulator, has the advantages of small size, light weight, large rated flow coefficient, especially suitable for large diameter, large flow, thick black kiln, boiler serous turbid control.This series products are standard type, high temperature type and sealing type three kinds. Pneumatic switch into manual, using the side handwheel institutions: extract the locating pin and pull up the handle, worm and worm meshed, press in the locating pin, rotating handwheel can change the circulation section. Manually switched into pneumatic, pull the handle.
tachnical parameters and performance indicators
body：WCB、HT200、ZG230—450、ZG1Cr18Ni9Ti
disc：carbon steel、1Cr18Ni9Ti
shaft：1Cr18Ni9Ti
Valve seat: carbon steel, stainless steel lining synthetic rubber or enhanced ptfe
inner bearing: bronze, stainless steel bead welded stellite
packing: PTFE, flexible graphite
bonnet: carbon steel
PN：0.1、0.25、0.6、1.0、1.6、2.5Mpa
diameter：50mm to 1000mm
leakage class:Ⅱ, Ⅵ
flow characteristic: approximately equal percentage
detail technical parameters
| DN mm | 50 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | |
| rated flow coefficient Kv | 85 | 220 | 340 | 530 | 770 | 1360 | 2130 | 3060 | 4160 | 5450 | 6900 | 8500 | 12200 | 16600 | 21700 | 27540 | 34000 | |
| PN Mpa | 0.6 | |||||||||||||||||
| rated corner ° | 70 | |||||||||||||||||
| signal pressure Kpa | 20～100 | |||||||||||||||||
| flow characteristic | approximately equal percentage | |||||||||||||||||
| medium temperature ℃ | -20～200(normal temperature) ； -40～450(middle temperature) ； -40～600(high temperature) | |||||||||||||||||
| connecting flange | According to JB78-59 wafer flange connection | |||||||||||||||||
| signal connecting screw | M16×1.5 | |||||||||||||||||
| equipped actuator | diaphragm | ZMA-2 | ZMA-3 | ZMA-4 | ZMA-5 | |||||||||||||
| piston | ZSC-45 | |||||||||||||||||
| body material | ZG230-450；1Cr18Ni9； ZG1Cr18Ni9Ti、ZGOCr18Ni12Mo2Ti | |||||||||||||||||
| accessory | Handwheel, locator, air filter reducer,etc | |||||||||||||||||
external dimensions (unit：mm）
| DN | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | |
| H | 635 | 760 | 810 | 960 | 1116 | |||||||||||
| H1 | 435 | 560 | 660 | 796 | ||||||||||||
| H2 | 65 | 80 | 100 | 120 | 150 | 200 | ||||||||||
| H3 | 270 | 295 | 480 | 500 | 695 | |||||||||||
| B | 80 | 100 | 140 | 170 | 190 | 210 | 250 | |||||||||
| D | 150 | 170 | 225 | 280 | 335 | 395 | 445 | 495 | 550 | 600 | 705 | 810 | 920 | 1020 | 1120 | |
| N×d | 4-18 | 8-18 | 12-18 | 12-23 | 16-23 | 20-25 | 24-25 | 24-30 | 28-30 | |||||||
| L | 321 | 370 | 395 | 455 | 505 | 599 | 649 | 711 | 761 | 811 | 1023 | 1123 | 1258 | 1358 | 1458 | |
| L1 | 100 | 114 | 125 | 160 | 185 | 212 | 237 | 274 | 299 | 324 | 495 | 549 | 610 | 660 | 710 | |
| A | 282 | 360 | 470 | 620 | ||||||||||||
