- Cryogenic Safety Valve
Falcon Flow Control Cryogenic Safety Valve
A precision-engineered safety valve designed to automatically relieve excess pressure in cryogenic tanks, vessels, and pipelines to prevent system failure.
Full Description
The Falcon Flow Control Cryogenic Safety Valve is a critical component for ensuring safety in cryogenic applications where gases and liquids are stored or transported at extremely low temperatures. It is designed to open rapidly when system pressure exceeds a pre-set threshold, releasing excess pressure to prevent equipment damage or explosion.
Specifically developed for use with LNG, liquid nitrogen, liquid oxygen, liquid argon, liquid hydrogen, and other cryogenic media, this valve features materials and construction that perform reliably down to -196°C (-320°F).
With an extended bonnet, corrosion-resistant internals, and optimized seat geometry, this safety valve ensures both high flow capacity and excellent sealing after closure. It complies with the strictest global standards for pressure relief devices in cryogenic systems.
Features & Benefits
Extended bonnet
Keeps moving parts away from cryogenic temperatures to prevent freezing
Cryogenic service tested
Operational reliability down to -196°C
Precision spring-loaded design
Rapid, repeatable valve lift under overpressure
Corrosion-resistant internals
Long-term service in aggressive and cold environments
Bubble-tight sealing
Minimizes product loss and ensures clean reseating
Compact and lightweight
Ideal for mobile tankers and limited-space installations
Testing Procedures
- Cold shock testing (LN₂ immersion)
- Set pressure calibration
- Seat tightness and backpressure testing
- Blowdown and reseating verification
- Helium or nitrogen leak test
- Material traceability and compliance review
Customization Options
- Blowdown adjustment ring
- Cleaning for oxygen service
- Vacuum jacket for cold insulation
- Lift lever or remote test gag
- Dual orifice design (for high-flow relief)
- CE or TPED marked for Europe
Application Segments
LNG tankers and skid-mounted equipment
Cryogenic air separation units (ASUs)
LOX, LIN, LAR, and CO₂ storage tanks
Hydrogen fueling systems
Cold boxes and vacuum jacketed systems
Aerospace and medical cryogenic facilities
Product Line
Falcon Flow Control CryoSafe SV Series
Safety Valves for Cryogenic Protection
Size Range
NPS (inch)
DN (mm)
½” – 2”
DN 15 – DN 50
Pressure Class
Type
Range
Set Pressure
1 bar to 100 bar (14.5 – 1450 psi)
Max Working Pressure
Up to 150 bar depending on design
Pressure Class
ANSI 150 – 600 / PN 16 – 100
Materials
- Body: CF8M (316 SS), Monel, Bronze (non-corrosive options)
- Trim / Seat: 316 SS, Stellite, Inconel X-750
- Spring: Inconel X-750, 17-7PH Stainless Steel
- Bonnet Extension: 316L Stainless Steel (welded)
- Soft Seal Options: PTFE, PCTFE, Cryogenic Graphite
Standard Connections
- Flanged: ASME B16.5 / EN 1092-1
- Threaded: NPT / BSPT
- Socket weld or butt weld (on request)
- Tank flange options available
Design Standards
- BS 6364 – Valves for Cryogenic Service
- ISO 21013-1 – Pressure Relief Devices for Cryogenic Installations
- ASME Section VIII Division 1 – Safety Valve Sizing and Construction
- API 527 – Seat Tightness Test
- PED 2014/68/EU – European Pressure Equipment Directive
- CE, TPED, ATEX – Optional compliance on request