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When any abnormality in the system causes the monitoring pressure to reach the predetermined warning value (ultra-high pressure or ultra-low pressure), the device will cut off the air flow automatically and quickly, which plays a role of safety protection.
High cutting accuracy and fast response
internal bypass, easy to open
it can be used for ultra-high pressure and ultra-low pressure cut-off and closed tightly.
it can be cut off automatically or manually by using the medium's own pressure
remote control, monitoring and alarm can be selected
easy operation and online maintenance
Compact structure and convenient installation
when the medium contains corrosive substances such as sulfur and benzene, anti-corrosive materials can be selected
applicable media: natural gas, artificial gas, liquefied petroleum gas, air and other non corrosive gases
it can be used for gas transmission pipeline, city gate station, regional pressure regulating station, industrial gas and civil gas between the mine gas gathering station and city gate station.
cut off pressure PQ: 2KPa ~ 10KPA; 7kpa ~ 24kpa; 30KPa ~ 300kPa
0.03Mpa-0.5Mpa; 0.4Mpa-0.8Mpa; 0.7Mpa-1.3Mpa;1.2Mpa-1.7Mpa; 1.6Mpa-2.6Mpa; 2.5Mpa-4.0Mpa;4.0Mpa ～ 7.6Mpa
cutting accuracy: ± 3%
working temperature T: - 20 ℃ ~ 60 ℃
nominal pressure: pn0.4 pn0.8 pn1.6 pn2.5 pn4.0 pn6.4 pn10.0
nominal diameter: DN25 DN50 DN80 DN100 DN150 DN200
| Model | L | H | H1 | ||
|---|---|---|---|---|---|
| Less than PN16 | PN25、PN40 | More than PN63 | |||
| RQJ-25/*G（S） | 184 | 197 | 210 | 382 | 301 |
| RQJ-50/*G（S） | 254 | 267 | 286 | 460 | 328 |
| RQJ-80/*G（S） | 298 | 318 | 337 | 520 | 346 |
| RQJ-100/*G（S） | 352 | 368 | 394 | 522 | 357 |
| RQJ-150/*G（S） | 451 | 473 | 473 | 625 | 407 |
| RQJ-200/*G（S） | 543 | 568 | 568 | 787 | 519 |
