There are two kinds of ammonia gas emergency shut-off valve operation procedures

Ammonia gas emergency shut-off valve is closed, high low into the structure, and the hand pump, through the hand pump handle to do reciprocating motion, the increased pressure to open the emergency shut-off valve, medium can be passed, in case of emergency, the other will hand pump pressure relief valve opens, hydraulic system pressure quickly, make emergency cut-off valve shut down immediately. Ammonia gas emergency shut-off valve in structure with low melting point ( The fusible alloy) Plug, when an accident due to higher temperatures of 80 ℃ ( The fusible alloy) Melting plugging tubing pressure, quickly close the valve, ensure the ammonia gas, liquefied petroleum gas storage tank system security. Operating procedures: (1) cut-off valve pressure standard of 20 k 4. 0 mpa, pressure cylinder of daily work, no more than 6. 0 mpa, but must be higher than 2. 0 MPa, guarantee the normal work of the oil cylinder. Second, in order to make the service life of pump longer, to prevent the environment temperature, oil expansion, damage emergency cut-off valve and manual oil pump, impact pressure gauge, must be on time for inspection equipment.