Inflatable Hatch Seal

Dangers of Open Dome Loading
Operators of top loading arms for railcars and trucks are continuously barraged by a bevy of chemical compounds and vapors as product splashes and fugitive gases escape during open dome loading. Not only do these releases pose serious health risks to operators but also to the environment, and could lead to fines or penalties.

The Solution
OPW Engineered Systems now has a safer, faster and cleaner solution for open hatch and open dome loading. Introducing the Inflatable Hatch Seal.

This advanced seal system features:

  • A 316 stainless-steel or aluminum core body
  • Rugged inflatable bladder
  • Ports for an overfill sensor, vapor recovery and product delivery
  • Solid drop tube
  • Exhaust valve
  • Rotating ring lockdown


Advantages of the Inflatable Hatch Seal

  • Provides a vapor-tight seal in seconds
  • Rotating ring tightens without the need for hand tools
  • Vapor recovery protects the environment, operator and profits
  • Optional overfill sensor provides secondary overfill protection
  • Drop tube lengths are customizable for specific applications
  • Provides a tight seal for dome openings 19 to 21" in diameter
  • Requires no downward force – great on scale equipped loading racks
  • Diverts water, dirt, oil, snow and ice
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