CN110725978A
|
|
Device capable of being quickly and automatically closed and natural gas wellhead emergency cut-off device
|
WO2020103534A1
|
|
Fusible fireproof emergency shut-off valve
|
CN109323030A
|
|
The fire prevention quick action emergency valve of meltable formula
|
CN108825833A
|
|
A kind of valve system with isolating device
|
CN107504234A
|
|
A kind of natural gas wellhead emergency shutoff device
|
CN107387802A
|
|
A kind of bias double ball face sealing valves of built-in compression valve seat
|
CN107084277A
|
|
The buffering type pilot automatic valve triggered based on strut buckling
|
CN107084275A
|
|
The automatic valve system of the single-action pneumatic executor driving of duplicate protection can be provided
|
CN107035904A
|
|
The automatic valve system of the double acting pneumatic actuator driving of duplicate protection can be provided
|
CN107061815A
|
|
The diaphragm type pilot automatic valve triggered based on strut buckling
|
CN106594365A
|
|
Automatic valve applicable to low pressure working conditions and triggered to act through pressure bar destabilizing
|
CN106594338A
|
|
Automatic valve triggered to act by unstable pressure lever during over-pressing
|
CN105782523A
|
|
Valve assembly for triggering motion by means of pressure bar destabilizing in overpressure process
|