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Keepfull Vent Device

Keepfull Vent Device

Get an uninterrupted, instantaneous supply of liquid with a CryoWorks Keepfull Vent Device. Properly designed systems will incorporate Keepfulls at all system highpoints. CryoWorks Keepfull Vent Device has an internal mechanical float that drops to allow accumulated gas to vent. Once all of the gas vents, the float rises to seal off the vent orifice. This simple design requires no field adjustments, no sensors, no pneumatics, and no electronics.
Need “Liquid on Demand”?
  • Install Keepfull Vent Devices at all system highpoints
  • Slope piping up to each keepfull
  • Properly size your VIP lines for the required flow rate
  • Ensure all piping, valves & connections are vacuum insulated to minimize heat gain
Important Note: Route and terminate all keepfull vents to a safe location. Vented nitrogen gas in a closed area can create an oxygen-deficient atmosphere.

Vent Heater

Install a CryoWorks Vent Heater on the gas vent outlet of a CryoWorks Keepfull Vent Device. The general purpose for the Vent Heater is for outdoor venting or ventline termination in a large enclosed area with proper air exchange. Our heater provides an ice-free termination, minimizing safety hazards such as falling ice, water drips, large ice accumulation, and roof damage. The protective outer mesh shields personnel from the high-temperature heater located at the vent.

Ambient Vent Line Heater (AVLH)

Install a CryoWorks Ambient Vent Line Heater (AVLH) on the gas vent outlet of a CryoWorks Keepfull Vent Device. The general purpose for the AVLH is for indoor use where the cold discharge gas needs to be warmed prior to venting. Typically used for long-distance vent lines to eliminate the need for insulation or for venting into exhaust ducts. Our AVLH provides an ice-free (ambient temperature) vent gas, minimizing safety hazards such as falling ice, water drips, large ice accumulation, and roof damage.