Compound Lever Design
  • Reduces weight of hatch and keeps it compact
  • Reduces dead weight required for a particular set pressure
  • Decreases over pressure required for full pallet lift.
Soft Seal Gasket Design
  • Exceeds API 2000 leak requirements
  • Bubble tight beyond 90% of set pressure
  • Superior performance as compared to competitor models with hard rubber or plastic seals
Operating Design
  • Automatically closes and resets after venting
  • Can be locked open for manway access
  • Field serviceable
  • Integrated lifting lugs (3 plcs)


  • Steel and Aluminum construction
  • Vent assembly powder coated safety yellow
  • Dead weight plates zinc plated
  • Composite expanded FKM (Sponge Viton) gasket


  • Field-adjustable relief settings
  • Relief settings from 4 ozsi to 32 ozsi in 2 ozsi steps
  • Available in 20” and 24” sizes
  • Available for API 650and ANSI B16.5 150# connections
  • Severe Service, Fusion-bond epoxy coating available as an option in place of standard powder coating. Provides resistance to mineral acids, chloride ion solutions and many oil field organics.


Function Emergency Pressure Relief Vent (EPRV)
Temperature Range -26°C to 204°C (FKM)
Pressure Relief Type Direct-acting, dead weight
Pressure Relief Range (20 & 24 API / ANSI) 1 to 32 ozsi (1 ozsi increments)
Pressure Relief Range (8 API) 1 to 16 ozsi (1 ozsi increments)
Tank Connection (8 API) 8 API (API 12F Fig 1)
Tank Connection (20) 20 API 650 or 20 ANSI B16.5 150#
Tank Connection (24) 24 API 650 or 24 ANSI B16.5 150#

Related Documents


Download Brochure

Vent Sizing Charts

Download Sizing Charts

A guide to venting upstream tanks

Download TB-1217-TV

Installation Instructions

Download Instructions

Ordering Information

Please refer to the brochure PDF for ordering information.

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