Free Vents | Rim Vents | Gauge Hatches

Combined Free Vents & Sampling Hatch

Gauge Hatches combined with Free Vent Hatches

CNC 141 Series Free Vents provides easy tank access for sampling or dipping tank contents whilst allowing the tank to vent safely through the weatherhood.
  • Available in aluminium, cast iron, carbon steel, stainless steel
  • Sizes 4″, 6″ & 8″
  • Stainless screen screen mesh
  • ANSI and DIN flanges
  • Non sparking o ring seal
  • The unit may be padlocked to ensure security when closed.

Free Vents | Rim Vents | Gauge Hatches

Tank Free Vents

Tank Free Vents or Conservation vent prevents the build-up of internal tank pressure.

Rim Vent

Rim Vent provides low pressure relief for storage tanks, originally designed for floating roof tanks.

CNC 101 Atmospheric Gauge hatch

Foot Operated Non Lockable Gauge Hatches for atmospheric tanks

CNC 102 Lockable Gauge Hatch

Foot operated Lockable gauge hatches to allow easy access to liquid storage tanks for manual level measurement, Gauge hatches are available in aluminium or steel from 2" to 12"

CNC 103 Combination Gauge Hatch

Gauge Hatches combined with Pressure and Vacuum Relief CNC 103 Combination Gauge Hatches are a combined unit allowing access for manual level gauging or sampling and providing pressure & vacuum relief