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Varec Series 221 Emergency Pressure Relief Manway covers
Series 221 Emergency Pressure Relief Manway covers
The 221 Series is designed to provide emergency venting of low pressure storage tanks and vessels
Varec Series 221 Emergency Pressure Relief Manway covers


Product Type
Tank, Vacuum Valves, Emergency, Emergency Relief Vents, Pressure/Vacuum Relief Valves, Relief Valves, Spring-Loaded Hatches


  • Available in emergency pressure only and emergency pressure and vacuum relief models.
  • Cast metal cover provides added strength and extended life.
  • Hinged cover provides a fixed pivot point, ensures proper reseating and added safety.
  • Cover cannot separate from the base.
  • Easily lifted open to provide a large, unobstructed passage for easy tank access.
  • 221PV incorporates a spring loaded vacuum relief valve integral to the cover assembly.
  • Weather hood and screen provided for protection.
  • Non-metallic seat insert on the pallet minimizes leakage.
  • Durable reinforced fabric diaphragm type pressure side seating surface backed by compressible, cellular non-metallic pads for added cushion and reduced leakage.
  • Optional materials available to suit most chemical applications.


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