Peumatic diaphragm direct signle seat, double seat control 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
Peumatic diaphragm direct signle seat, double seat control valves
features
ZHJP, ZHJM pneumatic diaphragm single seat regulator and pneumatic diaphragm sleeve regulator use double oriented structure, equipped with multi-spring actuators. With compact structure and light weight, quick action, fluid passage presents S streamlined and low pressure drop losses, large capacity, high precise flow characteristics, convenient in assembling and disassembling etc. It is widely used in precise control gases, liquids, steam and other media parameters such as temperature, pressure, and flow, liquid level in a given value. Particularly applicable to small allowed leakage and small pressure differential occasions. Shanghai Yihuan produced pneumatic diaphragm signle seat, sleeve control valve has standard, regulating cutting off, bellows sealing, jacket insulation. Nominal pressure rating has PN16, 40, 64, Nominal diameter scope has DN20-300. Suitable fluid temperature from -200℃ to 560℃ within various grades. Leakage standard level is III and IV, flow characteristic is linear or equal percentage. Various specifications are available for selections.
structure
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic1)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic2)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic3)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic4)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic5)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic6)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic7)
Peumatic diaphragm direct signle seat, double seat control valve constructral diagram(pic8)
technical parameters and performance indicators
body, bonnet：WCB、HT200、ZG230-450、ZG1Cr18Ni9Ti
core, seat：1Cr18Ni9Ti, bead welded stellite
packing: PTFE,flexible graphite, stainless steel bellows
gasket:rubber asbestos plate,graphite spiral wound gasket, 1Cr18Ni9Ti
diaphragm cover：A3
bellows diaphragm: NBR with enhanced dacron fabric
spring ：60Si2Mn
stem,thrust rod：2Cr13、1Cr18Ni9Ti
sleeve：2Cr13
soft sealing core： enhanced PTFE
detail technical parameters
| DN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 400 | ||||||
| rated flow coefficient Kv | single seat | 5 | 8 | 12 | 20 | 32 | 50 | 80 | 120 | 200 | 280 | 450 | 700 | 1100 | ||||||
| double seat | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 1000 | 1600 | 2700 | |||||||
| rated stroke L(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||||||||
| diaphragm effective area Ae(cm2) | 280 | 400 | 600 | 1000 | 1600 | |||||||||||||||
| PN(Mpa) | 1.6、4.0、6.4 | |||||||||||||||||||
| intrinsic flow characteristic | linear, equal percentage | |||||||||||||||||||
| intrinsic adjustable ratio R | 50：1 | |||||||||||||||||||
| signal scope Pr(Kpa) | 20～100、 40～200、 20～60、 80～240, section width:20～60、 60～100、 | |||||||||||||||||||
| air supply pressure Ps(Mpa) | 0.14～0.4 | |||||||||||||||||||
| allowed leakage | Ⅳ（single seat）、 Ⅲ( double seat） | |||||||||||||||||||
| working temperature t （℃） |
normal temperature | -20200、 -40～250、 -60～250 | ||||||||||||||||||
| radiating type | -40～450、 -60～450 | |||||||||||||||||||
| high temperature | 450～650 | |||||||||||||||||||
| low temperature | -60～100、 -100～ -200、 -200～ -250 | |||||||||||||||||||
external dimensions
| DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| flange length （L） |
PN16 | 180 | 185 | 200 | 220 | 250 | 275 | 305 | 350 | 410 | 450 | 550 | 670 | 770 |
| PN40 | 185 | 190 | 210 | 230 | 255 | 285 | 310 | 355 | 425 | 460 | 560 | 690 | 795 | |
| PN64 | 190 | 200 | 220 | 240 | 265 | 295 | 320 | 370 | 400 | 475 | 570 | 752 | 819 | |
| standard bonnetH1 | signle seat | 560 | 567 | 579 | 622 | 652 | 802 | 818 | 826 | 1054 | 1079 | 1144 | 1517 | 1658 |
| double seat | 577 | 583 | 642 | 652 | 822 | 852 | 876 | 1104 | 1129 | 1124 | 1637 | 1758 | ||
| middle temperature bonnet H1 | signle | 760 | 767 | 779 | 822 | 852 | 1052 | 1062 | 1076 | 1347 | 1399 | 1464 | 1867 | 2008 |
| double seat | 777 | 783 | 842 | 852 | 1072 | 1102 | 1126 | 1424 | 1449 | 1524 | 2023 | 2108 | ||
| H2 | signle seat | 91 | 112 | 118 | 129 | 144 | 173 | 191 | 195 | 243 | 251 | 290 | 380 | 436 |
| double seat | 117 | 120 | 139 | 144 | 188 | 208 | 220 | 268 | 278 | 320 | 441 | 465 | ||
| A | 282 | 360 | 470 | 620 | ||||||||||
| flange standard | GB ；1.6、2.5、4.0、6.4Mpa ANSI:150、300、600Lb JIS：10K、20K、30K | |||||||||||||
Note： The product performance indicators implement GB/4213-92。 The aboved values are according to PN1.6， with handwheel height should add 150mm（DN20～50）、180mm（DN65～100）、250mm（DN125～200）、280mm（DN250～300）。
