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  • Fisher™ Type P551 - P551A External Closing Spring Retro Fit Kits For The Type N550
Fisher-P-P551-P551A

Fisher™ Type P551 - P551A External Closing Spring Retro Fit Kits For The Type N550

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Product Description

Type P551 kit, is designed to aid the closure of Type N550/N850 ESVs. Type P551A kit, is designed to aid the closure of the Type N550/N850 equipped with a Type P327D Remote Pneumatic Release Air Cylinder. (NOTE: External Closing Spring is already included on N551/N851 ESVs.)

Features

  • Aid in the Closure of Type N550/N850
  • Optional Type P551A includes pneumatic latch block
  • Replacement Fuse link included in both model types

Specifications

Emergency Shutoff Valve End Connection Size and Style
1-1/4, 2 and 3-inch NPT
Thermal Release Melt Point
212°F / 100°C

Documents & Drawings