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Product features
Zjhp fine and small pneumatic single seat control valve is composed of pneumatic multi spring diaphragm actuator and low flow resistance single seat valve. The new actuator is low in height, light in weight, easy to install, compact in structure, unobstructed in flow passage, large in flow coefficient, reliable in action, small in seat leakage, accurate in flow characteristic and wide in adjustable range.
Main performance specifications
Main technical parameters of regulating mechanism
Nominal diameter£¨mm£© | 20 | 25 | 40 | 50 | 65 | 80 | 100 | 150 | 200 | |||||||
Seat diameter£¨mm£© | 10 | 12 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||
Rated flow coefficient Kv | straight line | 1.8 | 2.8 | 4.4 | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 | |
Equal percentage | 1.6 | 2.5 | 4 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | ||
Nominal pressure£¨MPa£© | 0.6 1.6 4.0 6.4 | |||||||||||||||
trip mm | 10 | 16 | 25 | 40 | 60 | |||||||||||
Flow characteristics | Straight line, equal percentage | |||||||||||||||
Medium temperature ¡æ | -15~200¡¢-40~250£¨Normal temperature type£©¡¢230~450£¨Medium temperature type£© | |||||||||||||||
Flange size | Cast iron flange size according to JB/T78£¬Cast steel flange size according to JB/T79 | |||||||||||||||
flange type | Flange sealing surface type JB/T77£¬The cast iron flange is smooth type and the cast steel flange is concave type | |||||||||||||||
body material | PN(MPa) | 0.6,1.6 | WCB(ZG230-450) | |||||||||||||
4.0,6.4 | WCB(ZG230-450)£¬ZG1Cr18Ni9Ti¡¢ZG0Cr18Ni12Mo2Ti | |||||||||||||||
Material of valve core | 1Cr18Ni9¡¢0Cr18Ni12Mo2Ti | |||||||||||||||
Type of upper valve cover | Common type (constant temperature type),hot plate type (medium temperature type) | |||||||||||||||
Adjustable ratio R | 50:1 | |||||||||||||||
Air supply connector | M16*1.5 |
Note: ANSI, API, JIS and other foreign flange standard products can be provided for users, and the structural length can also be determined according to the needs of users.
Main technical parameters of actuator
model | ZHA/ZHB-22 | ZHA/ZHB-23 | ZHA/ZHB-34 | ZHA/ZHB-45 |
Effective area cm ² | 350 | 350 | 560 | 900 |
trip mm | 16 | 25 | 40 | 60 |
Spring range KPa | 20~100£¨±ê×¼£©£»40~200£»80~240£»20~60;60~100 |
Drawing of pneumatic single seat control valve
Main connecting dimensions of pneumatic single seat control valve
Nominal diameter £¨DN£© |
L | H | H1 | weight£¨Kg£© | ¦µA | |||||||
PN6/16 | PN40 | PN64 | ordinary | high temperature | PN6 | PN16 | PN40 | PN64 | PN6/16 | PN40/64 | ||
20 | 184 | 194 | 206 | 398 | 548 | 45 | 52 | 65 | 19 | 23 | 285 | |
25 | 185 | 197 | 210 | 410 | 560 | 50 | 57 | 70 | 20 | 24 | ||
32 | 200 | 210 | 220 | 418 | 578 | 56 | 70 | 78 | 24 | 31 | ||
40 | 222 | 235 | 251 | 455 | 620 | 65 | 75 | 85 | 26 | 35 | ||
50 | 254 | 267 | 286 | 475 | 627 | 70 | 82 | 90 | 30 | 40 | ||
65 | 276 | 292 | 311 | 610 | 790 | 80 | 92 | 102 | 47 | 66 | 360 | |
80 | 298 | 317 | 337 | 622 | 807 | 95 | 100 | 107 | 55 | 78 | ||
100 | 352 | 368 | 394 | 640 | 850 | 105 | 110 | 117 | 125 | 65 | 99 | |
125 | 410 | 425 | 440 | 864 | 1122 | 120 | 125 | 135 | 148 | 120 | 140 | |
150 | 451 | 473 | 508 | 870 | 1130 | 132 | 142 | 150 | 175 | 130 | 160 | 470 |
200 | 600 | 620 | 650 | 890 | 1150 | 160 | 170 | 187 | 207 | 175 | 250 | |
250 | 650 | 670 | 690 | 1203 | 1523 | 187 | 202 | 225 | 235 | 350 | 470 | 580 |
300 | 740 | 770 | 800 | 1234 | 1554 | 220 | 230 | 257 | 265 | 500 | 660 |
Material of main parts of pneumatic single seat control valve
Part name | Material Science | temperature range |
Body / bonnet | HT200 | -15~200¡æ |
WCB | -20~425¡æ | |
ZG1Cr18Ni9Ti | -40~550¡æ | |
ZG0Cr18Ni12Mo2Ti | -40~600¡æ | |
Spool / seat | 1Cr18Ni9 | -40~550¡æ |
0Cr18Ni12Mo2Ti | -40~550¡æ | |
filler | teflon PTFE | -40~200¡æ |
diaphragm | NBR clip reinforced polyester fabric | |
Compression spring | 60Si2Mn | |
Membranous cap | A3 |