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Fisher™ N562 Series Emergency Shutoff Valves
N562 Series Emergency Shutoff Valves (ESVs) are designed for railcar protection and attach to the shutoff valves on railroad tank cars.
Typically, three Type N562s are used: two on the liquid lines and one on the vapor line. Pneumatically operated, the valve is opened and closed by means of a standard quick-disconnect coupling. Remote closure from one or more points is accomplished by exhausting pressure from the valve?s piston chamber with a pneumatic control valve.
Fisher™ N562 Series Emergency Shutoff Valves


Body Sizes and End Connection Styles (inlet x outlet)
N562-16: 2-inch FNPT x 2-inch FNPT
N562-18: 2-inch FNPT x 2-1/4 male ACME
N562-26: 2-inch FNPT x 3-1/4 male ACME
Maximum Inlet Pressure
400 psig / 27.6 bar WOG
Elastomer options
Nitrile (NBR), Kalrez®, & Viton®
Thermal Release Melt Point
212°F / 100°C
Approximate Weight
FNPT Outlet: 12 lbs / 5.4 kg
Acme Outlet: 14.5 lbs / 6.6 kg


  • Shutoff in event of fire
  • Shutoff in event of excess flow
  • Remote shutoff capability
  • Stainless Steel construction
  • Light Weight
  • Application Flexibility
  • Hex couplings and ACME connections for ease of piping assembly
  • Fusible Element Provides Thermal Release