Liquid-helium cold end
A dedicated engineering enquiry based on temperature, leakage criteria and the cryostat interface.
Helium
Define your helium valve duty.
Helium installations can contain very different temperature zones. Define the actual fluid and temperature at the valve before selecting the construction.
6 LN2 auxiliary references · Specifications & datasheets
The application
Separate the helium circuit from its auxiliaries.
Liquid helium near atmospheric pressure is approximately −269°C. That duty extends below the published temperature limits of the valves in this catalogue. We review liquid-helium requirements separately; the browseable products on this page serve associated liquid-nitrogen pre-cooling circuits where specified.
Nitrogen pre-cooling
Published LN2 valve selections for associated pre-cooling and auxiliary pipework.
Recovery & test circuits
Identify the gas state, pressure, temperature and cleanliness for each individual valve duty.
Selection essentials
What defines the right configuration?
- Temperature zone
- Actual minimum and maximum temperature at each valve.
- Leakage & purity
- Test method, acceptance criteria and cleanliness.
- Thermal interface
- Insulation, heat-leak budget, pipe arrangement and access.
- Operating duty
- Fluid state, flow cases, pressure differential and actuation.
Products for this application
LN2 pre-cooling & auxiliary products.
These products explicitly list liquid nitrogen. They are shown for associated LN2 circuits in helium installations; they are not listed as liquid-helium or 4 K valves.
Need a valve in the helium cold circuit? Send the actual design conditions for a dedicated review. Discuss helium duty
Active filters
Vacuum-jacketed
ARD-VJ-002
Vacuum-jacketed emergency shut-off valve
A jacketed emergency shut-off configuration combining cryogenic insulation with pneumatic operation.
- Size range
- DN 15–80
- Pressure
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- LO2, LN2, LAr, LCO2, LNG
Vacuum-jacketed
ARD-VJ-001
Vacuum-jacketed globe valve
A vacuum-jacketed globe configuration for insulated cryogenic pipework.
- Size range
- DN 15–80
- Pressure
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- LO2, LN2, LAr, LCO2, LNG
Vacuum-jacketed
ARD-VJ-003
Vacuum-jacketed cryogenic lift check valve
An insulated lift-check configuration for DN25-50 cryogenic pipework, combining a vacuum-jacketed body arrangement with automatic non-return operation and PTFE sealing.
- Size range
- DN 25-50
- Pressure
- PN40 (4.0 MPa nominal)
- Temperature
- -196 to +80°C
- Connections
- Weld ends - preparation to specify
- Medium
- LNG / NG, LOX / O2, LN2 / N2, LAr / Ar
Check valves
ARD-CK-002
Cryogenic lift check · bolted cap
A bolted-cap non-return range covering small process lines through DN 200.
- Size range
- DN 10–200
- Pressure
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- LO2, LN2, LAr, LCO2, LNG
Control valves
ARD-CV-001
Pneumatic diaphragm control valve
A diaphragm-actuated globe valve with an extended stem for cryogenic process control.
- Size range
- DN 25–80
- Pressure
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- LO2, LN2, LAr, LCO2, LNG
Globe valves
ARD-GL-009
Long-stem cryogenic globe valve · PN40 · SW
A CF8 long-stem globe valve for DN10–50 socket-weld installations. Published reference tables distinguish alternative socket bores for the selected pipe.
- Size range
- DN 10–50
- Pressure
- PN40
- Temperature
- −196 to +80°C · series*
- Connections
- Socket weld (SW)
- Medium
- LNG, LOX, LN2, LAr, CO2
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Product ranges are offered as references for enquiry. Final size, materials, pressure–temperature limits and certification are confirmed for each selected assembly.
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Helium
Let’s define your valve requirements.
Send the medium, operating conditions and required valve duties. Your application will be included in the enquiry.