SMART IN FLOW CONTROL

FROSTY – Type 3598 Cryogenic Valve for high-pressure applications

Developed to meet our customers' requirements

  • Minimized loss of energy to the atmosphere thanks to the use of a circulation inhibitor and a cryogenic extension bonnet
  • Installation in vacuum-insulated pipelines, air separation plants (cold box) and peripheral plants made possible, optionally with a cover plate
  • Valve maintenance possible without removing it from the cold box or removing the insulation
  • The valve seat, piston and circulation inhibitor can be accessed after removing the actuator
  • Cv coefficients and valve characteristic can be adapted through the use of custom cages

Typical fields of application

Customer requirements Challenge Solution
High energy efficiency Large difference between operating temperature and ambient temperature Design ensures closure to the environment
Quick and easy in-line servicing Valve can be completely enclosed or insulated Top-entry design allows access to all parts subject to wear without removing the cold box or insulation
Very compact valve unit High actuator forces are required to handle high pressures The standard pressure balancing installed allows the use of compact, lightweight actuators
Severe service conditions, e.g. due to higher pressure drops, cavitation and flashing Control of severe service conditions, preventing vibrations, minimizing wear Rugged cage design
Customer requirements Challenge Solution
High energy efficiency Large difference between operating temperature and ambient temperature Design ensures closure to the environment
Quick and easy in-line servicing Valve can be completely enclosed or insulated Top-entry design allows access to all parts subject to wear without removing the cold box or insulation
Very compact valve unit High actuator forces are required to handle high pressures The standard pressure balancing installed allows the use of compact, lightweight actuators
Severe service conditions, e.g. due to higher pressure drops, cavitation and flashing Control of severe service conditions, preventing vibrations, minimizing wear Rugged cage design
Inclined mounting position Cold medium rises into the cryogenic extension bonnet All valves are fitted with a circulation inhibitor to prevent the medium from circulating in the cryogenic extension bonnet
Customer requirements Challenge Solution
Special purity requirements Thorough cleaning required to remove all surface contaminants after production; completely free of oil and grease; no particles present on surfaces that come into contact with the medium Special controlled cleaning procedure; valve assembly in a clean room; special marking of parts and valves; trained staff
Avoidance of ignition sources Careful material pairing and special engineered design Collaboration with internationally renowned oxygen experts; good engineering practice and compliance with standards and regulations; special material database based on internal material testing; risk analyses
Severe service conditions, e.g. due to higher pressure drops, cavitation and flashing Control of severe service conditions, preventing vibrations, minimizing wear Rugged cage design
Excellent energy efficiency Considerable difference between operating and ambient temperatures The design can be directly adapted to allow the valve to fit into the cold box. A cover plate seals the installation to the atmosphere.
Quick and easy in-line servicing Valve is completely enclosed and insulated Top-entry design allows access to all parts subject to wear without removing the cold box or insulation
Inclined mounting position Cold medium rises into the cryogenic extension bonnet The standard circulation inhibitor prevents circulation of the medium in the cryogenic extension bonnet.