วาล์วปิดฉุกเฉิน Emergency Shut-Off Valve Fisher รุ่น N551

Snappy Joe Type N551 Emergency Shutoff Valves (ESVs) are designed for in-line installations, usually near a bulkhead. The valves provide a means of shutting off gas in the event of a hose rupture or piping break at the transfer area to avoid a large-scale loss of LPG or Anhydrous Ammonia (NH3).

Type P539A pneumatic actuator permits opening and closing Fisher N551 Series Snappy Joe emergency shutoff valves (ESVs) both at the valve with the use of a pneumatic 4-way valve and from a remote location. The actuator opens the valve when pressure is applied. The minimum pressure is 20 psig / 1.4 bar and the maximum pressure is 30 psig / 2.1 bar.