Overview of ZMAN-16D pneumatic anti-spring low-temperature double-seat control valve: ZMAN-16D pneumatic anti-spring low-temperature double-seat control valve pneumatic film low-temperature control valve is a deformation product of single-seat and double-seat control valves. It is different from normal temperature in that it adopts a long-necked upper valve cover to make the packing work at normal temperature. It is suitable for the adjustment of the medium (such as liquid oxygen, liquid nitrogen, etc.) under the low temperature and strong state of -60~-250℃. To ensure the accuracy of adjustment, a positioner must be used.
Item NO.:
XUVAL77-98Lead Time:
45DaysProduct Orgin:
CHINABrand:
XUVALShipping Port:
ShanghaiPayment:
100%TTColor:
SilveryMOQ:
10ZMAN-16D pneumatic anti-spring low-temperature double-seat regulating valve
Structural principle of pneumatic low-temperature double-seat control valve:
The pneumatic low-temperature control valve is composed of a pneumatic film actuator and a low-temperature-resistant single-seat and double-seat control valve. The signal pressure from the regulator is input into the air chamber of the pneumatic membrane actuator to generate thrust, and the valve core is driven by the connecting rod. The change of the valve core position changes the flow cross-sectional area of the valve and realizes the adjustment of the medium flow.
Precautions for pneumatic low-temperature double-seat control valve:
1. It should be installed vertically on a horizontal pipeline. In special circumstances, when horizontal or inclined installation is required, support should generally be added. The circular board installed on the wall of the incubator should be parallel to the wall of the incubator.
2. It should be installed near the ground or floor for maintenance and repair. For those equipped with a positioner or handwheel mechanism, it should be ensured that the observation, adjustment and operation are convenient.
3. Generally, by-pass pipelines are set up so as to switch to manual operation when the automatic control system fails or is repaired, so as not to stop production.
4. When a handwheel mechanism is installed, manual operation can also be omitted when the bypass pipeline is installed, and it can also be used to limit the opening. When stopping use, the handwheel mechanism must be restored to the original neutral position to facilitate the normal operation of the automatic control system.
5. During installation, the flow direction of the medium should be consistent with the direction indicated by the valve body.
6. The pipeline should be cleaned of dirt and welding slag before installation. After installation, make it fully open, clean the pipeline, etc. and test the tightness of each connection.
Main technical indicators of pneumatic low-temperature double-seat control valve:
Single seat
20
25
32
40
50
65
80
100
125
150
200
Two-seater
25
32
40
50
65
80
100
125
150
200
Single seat
0.08
0.12
0.20
0.32
0.50
0.80
1.2
2.0
3.2
5.0
8
12
20
32
50
80
120
200
280
450
Two-seater
10
6
25
40
63
100
160
250
400
630
Flow characteristics
Straight line
Straight line; equal percentage
Equipped with actuator model
ZMA-2
ZMA-3
ZMA-4
ZMA-5
Journey
10
10
16
25
40
60
Mode of action
Air-closed (B), air-opened (K)
Spring pressure range KPa
Standard signal: 20~100; other signals; 40~200; 20~60; 60~100
Outline structure drawing:
Main dimensions:
Nominal diameter DN (mm) |
|
20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | ||
A | 230 | 280 | 280 |
325 |
410 |
495 |
||||||||
|
135 | 235 | 235 | 255 | 280 | 310 | 345 | 370 | 430 | 470 | 550 | 660 | ||
1 | 160 | 260 | 260 | 285 | 305 | 340 | 375 | 405 | 460 | 525 | 590 | 700 | ||
2 | 190 | 290 | 290 | 315 | 335 | 370 | 410 | 440 | 490 | 560 | 630 | 740 | ||
n-d | 6-12 | 8-14 | 8-14 | 8-14 |
8-16 |
10-16 | 10-18 | 12-18 |
16-18 |
20-18 | ||||
Single seat |
H |
L | 120 | 190 | 200 | 210 | 235 | 265 | 295 | 210 | 370 | 440 | 475 | 570 |
H1=500 | 862 | 1006 | 1060 | 1066 | 1137 | 1152 | 1377 | 1390 | 1394 |
|
|
|
||
H1=600 | 962 | 1106 | 1160 | 1166 | 1237 | 1252 | 1477 | 1490 | 1494 |
|
|
|
||
H1=700 | 1062 | 1206 | 1260 | 1266 | 1337 | 1352 | 1577 | 1590 | 1594 | 1743 | 1751 | 1790 | ||
H1=800 | 1162 | 1306 | 1360 | 1366 | 1437 | 1452 | 1677 | 1690 | 1694 | 1843 | 1851 |
|
||
H1=900 | 1262 | 1406 | 1460 | 1466 | 1537 | 1552 | 1777 | 1790 | 1794 | 1943 | 1951 | 1990 | ||
H1=1000 | 1362 | 1506 | 1560 | 1566 | 1637 | 1652 | 1877 | 1890 | 1894 | 2043 | 2051 | 2090 | ||
H1=1100 |
|
|
|
|
|
|
|
|
|
2143 | 2150 | 2190 | ||
H1=1200 |
|
|
|
|
|
|
|
|
|
2243 | 2250 | 2290 | ||
H2 |
32 | 58 | 112 | 118 | 129 | 144 | 178 | 191 | 195 | 243 | 251 | 290 | ||
Two-seater |
H |
L |
|
|
200 | 210 | 235 | 265 | 295 | 320 | 370 | 440 | 475 | 570 |
H1=500 |
|
|
1065 | 1068 | 1147 | 1152 | 1387 | 1407 | 1419 |
|
|
|
||
H1=600 |
|
|
1165 | 1168 | 1247 | 1252 | 1487 | 1507 | 1519 |
|
|
|
||
H1=700 |
|
|
1265 | 1268 | 1347 | 1352 | 1587 | 1607 | 1619 | 1768 | 1778 | 1820 | ||
H1=800 |
|
|
1365 | 1368 | 1447 | 1452 | 1687 | 1607 | 1719 | 1868 | 1878 | 1920 | ||
H1=900 |
|
|
1465 | 1468 | 1457 | 1552 | 1787 | 1807 | 1819 | 1968 | 1978 | 2020 | ||
H1=1000 |
|
|
1565 | 1568 | 1647 | 1652 | 1887 | 1907 | 1919 | 2068 | 2078 | 2120 | ||
H1=1100 |
|
|
|
|
|
|
|
|
|
2168 | 2178 | 2220 | ||
H1=1200 |
|
|
|
|
|
|
|
|
|
2268 | 2278 | 2320 | ||
H2 |
|
|
117 | 120 | 139 | 144 | 188 | 208 | 208 | 268 | 278 | 320 |
Packing & Delivery :
Packing Details:all by seaworthy plywood case and packed strongly by packing belt as below
Delivery Details:Generally it is 5-10 days if the goods are in stock. or15-30 days if the goods are OEM or not
enough subject to the order quantity. But anyway, normally, we are able to make sure the delivery will not exceed 45days.
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