Cryovents and Heaters

Chart’s cryovents are installed to enhance the performance of the pipe system. In normal operation, some liquid is boiled to vapor from the small amount of heat leak into the pipe, and the cryovent allows this gas to escape. Applications requiring continuous up-time of liquid in the piping system must have a cryovent installed to ensure quality liquid availability. The result is more efficient operation of the liquid supply.

Product Advantages

• Available in a wide variety of sizes and configurations, including vacuum insulated exhaust connection to reduce ice build-up from the cold gas
• Electric heater options also available as another solution to eliminate exhaust ice build-up
• Available with pipe thread or bayonet inlets and outlets for system installation flexibility

Vacuum Jacketed (VJ) Valves

Cryogenic pipe systems often require valves to properly control the liquid flow to the application. Strategically located valves control flow to a branch of the system or into a use-point drop. A vacuum insulated valve has the benefit of extremely low heat leak for minimum gas boil-off, and it eliminates ice build-up and dripping water.

Product Advantages

• Available in many sizes and styles such as T or Y pattern
• The more compact Y-pattern valve is generally used in vertical drops for easier operation, better reliability and higher flow rates.
• Actuators can be installed on valves for control from a remote location or signal. Standard pneumatic actuators are often used to control flow rate or open and close valves based on the state of a switch, control system, or oxygen system E-stop switch.
• Un-insulated economical brass valves are also available for applications that have infrequent use. It is highly recommended to locate the internal liquid trap accessory above the valve to create a gas trap.

Liquid Flow Meter

For applications that require accurate cryogenic metering, the liquid flow meter is the solution. Based on the field-tested Orca flow meter, this meter system is a proven product without any moving parts to service. It accurately measures the pressure drop through a fixed orifice and reads the actual temperature of the liquid to calculate the liquid flow.

Product Advantages

• Accuracy capability: +/- 1.5%
• Approvals: National Institute of Standards and Testing (NIST) and California Weights and Measures
• Computer interface: RS-232
• Electronic display module to view current flow rate as well as totalized flow
• Readouts: pounds, kilograms, imperial gallons, US gallons and liters of liquid; cubic feet and cubic meters of gas
• Meter section is permanently encased in a vacuum insulated pipe section for thermal efficiency and meter accuracy

Adjustable Pressure Phase Separator (APPS)

The APPS-160 provides a convenient method of providing low-pressure liquid to an installation that is supplied from a bulk tank at higher pressure. The APPS provides a lower cost solution to supplying liquid at different pressures than installing two bulk tanks.

Product Advantages

• Provides tighter pressure control for the lower pressure liquid application
• Adjustable outlet pressure ranges of either 10-50 psig or 40-85 psig
• Working capacity: 160 liters
• Bayonet outlet connection is standard. Consult factory for custom designs.