Sentinel VPT & Watchman VPT Rotary Limit Switches from Sharpe®

Sharpe Valves Sentinel VPT Rotary Limit Switch
Sharpe Valves Sentinel VPT Rotary Limit Switch
Sharpe Valves Sentinel VPT Rotary Limit Switch

 Sharpe Valves Sentinel VPT has been designed to provide the most visible and reliable valve position indication in explosion-proof environments. With a wide variety of switches and sensors available to match your application, the Sentinel is the perfect choice. 


Sentinel VPT Design Features:

  • NEMA 4, 4x, 7, 9 for Explosion-Proof Applications
  • UL and CSA Certified for Explosion-proof.
  • Patented Engineered Loc-Ring Cam and Shaft Retention System provides unsurpassed sensing accuracy over the multi-million cycle life of the physical platform.
  • Clear Ektar cover offers optimum chemical resistance and strength and is environmentally sealed to prevent fogging or entry of contaminants.
  • Careful material selection provides patented indicator a rated life of minimum 1,000,000 cycles.
  • Materials of construction selected to excel in high vibration, corrosive and dirty environments, either indoors or outdoors.
  • Indicator is fully adjustable to any valve or actuator.
  • Internal Switches and terminal block are labeled for easier installation.
  • The industry's only "true" visual valve position indicator available for multi-port valves, adjustable to match the actual physical flow pattern of the valve.


Sentinel VPT NEMA 7 Material Specifications:

  • Enclosure: Aluminum with Optional Iridite for Corrosion Resistance, Optional Hard Anodizing for Severe Applications
  • Shaft: 303 or Optional 316 Stainless Steel
  • Shaft Locking Ring: Stainless Steel
  • Indicator Cover: Ektar Copolyester
  • Bearing: Bronze or Optional 303 Stainless Steel
  • Fasteners: 316 & 18-8 Stainless Steel
  • O-Rings: BUNA-N or Optional Viton
  • Cams and Splines: Acetal

Sharpe Valves Watchman VPT Rotary Limit Switch
The Sharpe Valves Watchman VPT has been designed to provide the most visible and reliable valve position indication in general purpose applications. With a wide variety of switches and sensors available to match your application, the Watchman is the best choice. 


Watchman VPT Design Features:

  • NEMA 4, 4x for General Purpose Applications
  • CSA Certified for General Purpose applications
  • Patented Engineered Loc-Ring Cam and Shaft Retention System provides unsurpassed sensing accuracy over the multi-million cycle life of the physical platform.
  • Clear Ektar Cover offers optimum chemical resistance and strength and is environmentally sealed to prevent fogging or entry of contaminants.
  • Careful material selection provides patented indicator a rated life of minimum 1,000,000 cycles.
  • Materials of construction selected to excel in high vibration, corrosive and dirty environments, either indoors or outdoors.
  • Indicator is fully adjustable to any valve or actuator
  • Internal Switches and terminal block are labeled for easier installation.
  • The industry's only true visual valve position indicator available for multi-port valves, adjustable to match the actual physical flow pattern of the valve.
  • Flat cover version is available without an indicator for areas with tight space requirements.


Watchman VPT NEMA 4 Material Specifications

  • Enclosure: Aluminum with 2-part Polyurethane Paint
  • Shaft: 303 or Optional 316 Stainless Steel
  • Shaft Locking Ring: Stainless Steel
  • Indicator Cover: Ektar Copolyester
  • Bearing: Bronze or Optional 303 Stainless Steel
  • Fasteners: 316 & 18-8 Stainless Steel
  • O-Rings: BUNA-N or Optional Viton
  • Cams and Splines: Acetal


Download Sharpe Valves Sentinel VPT & Watchman VPT Rotary Limit Switch Datasheet 

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Short description

Sentinel & Watchman VPT Rotary Limit Switches provide reliable valve position indication in explosion-proof environments and general purpose applications.