Pneumatic thin film low-temperature regulating valve
Nominal diameter: DN20~200mm
Pressure range: PN1.6~6.4MPa
Usage temperature: low temperature type -40~-196 ℃, ultra-low temperature type -196~-254 ℃
Manufacturing standard: JB/T7248-1994
Technical standard: GBT 24925-2016
Flange standard: GB/T12234-2007
Structure length: GB/T12221-2005
Valve material: stainless steel, CF3M, CF8M
Valve body form: straight through single seat spherical valve
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Product Overview
The pneumatic thin film low-temperature regulating valve is composed of a multi spring pneumatic actuator, a single seat regulating valve body, and an extension rod. The valve body, accessories, and extension rods all adopt special low-temperature treatment, mainly used for low-temperature media (-40 ℃~-196 ℃~-254 ℃), such as LO2, LN2, LAr, LNG, LPG, LC2H4 liquid oxygen, liquid nitrogen, liquefied natural gas, liquid carbon dioxide, liquid propane, liquid methane, etc. on industrial storage tanks or pipelines. The valve locator provides signal input (4-20mA) to the gas chamber of the pneumatic thin film actuator to generate thrust, By connecting the rod to drive the valve core, the position and flow cross-sectional area of the valve core are changed, achieving control and adjustment of the medium flow rate.
Main connect size
| Nominal DiameterDN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |
| L | PN16/25 | 181 | 184 | 200 | 222 | 254 | 276 | 298 | 352 | 410 | 451 | 600 |
| PN40 | 194 | 197 | 200 | 235 | 267 | 292 | 317 | 368 | 425 | 473 | 610 | |
| PN64 | 206 | 200 | 210 | 251 | 286 | 311 | 337 | 394 | 440 | 508 | 650 | |
| H | PN16/25 | 52.5 | 57.5 | 75 | 75 | 85.5 | 92.5 | 100 | 110 | 142.5 | 158 | 170 |
| PN40 | 52.5 | 57.5 | 75 | 75 | 82.5 | 92.5 | 100 | 117.5 | 150 | 167.5 | 187.5 | |
| PN64 | 65 | 40 | 85 | 85 | 90 | 102.5 | 107.5 | 125 | 172.5 | 195 | 207.5 | |
| H1 | Design the extension rod size of the pneumatic low-temperature regulating valve based on the actual minimum temperature on site | |||||||||||
| H2 | 298 | 298 | 298 | 298 | 298 | 380 | 380 | 380 | 510 | 510 | 510 | |
| H3 | 180 | 180 | 180 | 180 | 180 | 236 | 236 | 236 | 310 | 310 | 310 | |
| L1 | 289 | 289 | 289 | 289 | 289 | 347 | 347 | 347 | 476 | 476 | 476 | |
| A | 282 | 282 | 282 | 282 | 282 | 360 | 360 | 360 | 470 | 470 | 470 | |
| D | 220 | 220 | 220 | 220 | 220 | 270 | 270 | 270 | 320 | 320 | 320 | |
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