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Hydraulic emergency shut-off valve is mainly used for emergency situations in distant locations quickly closed the entrance tank,
installed in the gas. Ammonia and gas-related pipeline, and supporting the use of remote hand pumps, the use of hand Shake control
shut-off valve on the hydraulic pump – closed. Widely used in metallurgy, paper, petroleum, chemicals, textiles, mineral processing and
other fields.
Hydraulic emergency shut-off valve made by hand pump handle back and forth movements to open the hydraulic pressure
increased to an emergency shut-off valve, through the media can, in case of fire or other emergency situations, the hand-pump
pressure relief valve is opened, the oil pressure relief system quickly, immediately turn off the shut-off valve, or the outside
temperature rises to above 75 ℃, the installation of emergency shut-off valve in the pump or the fusible plug melts immediately, to
automatic pressure relief purposes, the automatic shut-off valve closed rapidly.
? More than just an emergency shut-off valve should be controlled using two hand pumps, which pump the other a working spare
pump to prevent damage to a pump, the hydraulic shut-off valve is not working. More than just the case of an emergency shut-off
valve, respectively, with one (J23H-40P) needle valve control. For maintenance to take advantage of the needle valve closed.
Technical specifications:
Pressure rating: 20K 4.0MPa
Cylinder working pressure: ≤ 6.0.Mpa
Temperature: -40 ~ +80 ℃
Cylinder using the media: mixed spindle oil, transformer oil
Use medium: natural gas, liquefied petroleum gas, ammonia, gas
Melt off time ± 70 ℃
Closing time: ≤ 10 Second
Open the cylinder pressure: ≥ 2.0MPa
Seals, O-rings: PTFE, NBR
Body: just cast stainless steel. 304,316,316 L
Spring: 50CrVA (spring steel)
Cylinder / Piston: Cr stainless steel
Procedures:
First, the hydraulic pressure shut-off valve standard 20k 4.0MPa, the daily work of cylinder pressure, no more than 6.0MPa, but to be
higher than 2.0 MPa, to ensure that the fuel tank work. Shut-off valve should always be turned on and off for a long time on the life
of the spring cylinder damage.
Second, in order to lengthen the service life of pumps to prevent the external environment temperature, oil swell, damage to the
tank shut-off valve and manual pump, the impact pressure gauge, inspection of equipment must be on time.
Inspection frequency: per hour on the pressure, temperature and related equipment operation inspection time.
Third, the normal working hours will pump pressure relief valve is closed; in cases of emergency tank shut-off valve shall close when
the pressure relief valve to open.