Cryogenic Valves

Cryogenic Valves Manufacturer & Industrial Low Temperature Flow Control Solutions

Founded in 1992, we manufacture cryogenic valves for demanding low-temperature applications where sealing reliability, dimensional stability, and operational safety are essential. Our production facility integrates CNC machining, precision assembly, pressure testing, and inspection processes to ensure consistent manufacturing quality. Cryogenic valves are available in multiple configurations, materials, and pressure classes for LNG, industrial gas, air separation, and other cryogenic systems, with OEM and customized manufacturing services for global industrial projects.

Ultra Low Temperature Industrial Valve
The Ultra Low Temperature Industrial Valve delivers reliable isolation and flow control for systems handling cryogenic media. Built with low-temperature resistant stainless steel and specialized...
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Liquid Oxygen Control Valve
The Liquid Oxygen Control Valve provides precise flow regulation and dependable shut-off for cryogenic oxygen systems. Engineered from low-temperature stainless steel, it features an extended...
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Liquid Nitrogen Shutoff Valve
The Liquid Nitrogen Shutoff Valve is engineered for precise isolation and flow control in cryogenic infrastructure operating at extreme low temperatures. Built with low-temperature stainless...
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Extended Bonnet Cryogenic Valve
Extended Bonnet Cryogenic Valves provide reliable fluid isolation and thermal protection in low-temperature liquid handling systems. The extended bonnet design physically separates the stem...
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Stainless Steel Cryogenic Valve
Stainless Steel Cryogenic Valve provides dependable flow isolation and fluid regulation for low-temperature piping systems. Constructed from premium stainless steel, the valve incorporates a...
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Oxygen Cryogenic Valve
The Oxygen Cryogenic Valve provides reliable shut-off, clean operation, and stable sealing performance in low-temperature oxygen environments. Engineered with stainless steel construction, an...
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Why Choose Us

Specialized Valve Manufacturing

Over 30 years of manufacturing experience with integrated machining, assembly, testing, and inspection processes for industrial valve production

Consistent Quality Control

Each production stage follows documented inspection procedures, including material verification, dimensional inspection, pressure testing, and final quality checks.

Engineering Customization

Support for customized materials, pressure ratings, connection standards, operating methods, and project-specific technical requirements.

Reliable Global Supply

Export-oriented manufacturing with standardized packaging, complete technical documentation, and responsive technical and after-sales support for international projects.

Product Advantages

Engineered Low-Temperature Construction: Incorporates precise extended bonnet designs based on industry design formulas. The extended neck establishes a stable gas column to protect stem packing from direct cryogenic liquid contact, keeping the stuffing box at temperatures suitable for optimal elastomer and packing elasticity.

Carefully Selected Materials: Body, trim, stem, and seat materials are selected based on low-temperature Charpy V-notch impact toughness and thermal contraction characteristics. We utilize low-carbon stainless steels and specialized polymers to prevent brittle fracture, galling, and seat distortion.

Stable Manufacturing Process: Manufacturing operations follow standardized production protocols. Precision machining tolerances, controlled component cleaning, and step-by-step assembly procedures ensure consistent dimensions, smooth surface finishes, and dependable seat tightness across all valve batches.

Flexible Project Support: Complete engineering flexibility allows alignment with international design standards, custom face-to-face dimensions, specialized end connections, high-pressure ratings, and specific flange facing finishes tailored to complex engineering specifications.

Product Range

Cryogenic Ball Valves: Compact quarter-turn quarter-action valves engineered with extended bonnets and cavity pressure relief mechanisms. Designed to provide reliable shut-off with low operating torque across high-pressure liquid and gas pipelines.

Cryogenic Gate Valves: Built with full-port fluid passages to minimize line friction and pressure drop. Equipped with flexible wedges and extended bonnets, these valves deliver bidirectional seal performance in large-bore isolation lines.

Cryogenic Globe Valves: Designed with optimized internal flow paths for accurate control and flow regulation. Ideal for process applications requiring precise throttling without high seat wear during thermal cycling.

Cryogenic Check Valves: Engineered to prevent backflow in liquid gas lines. Available in piston, swing, and dual-plate designs to ensure quick closing action and tight seating under low differential pressure.

Cryogenic Butterfly Valves: Offered in double and triple-offset configurations for large-diameter cryogenic piping systems. Provides high flow efficiency, low torque, and light structural weight.

Cryogenic Plug Valves: Engineered for specific low-temperature fluids requiring quick quarter-turn action and consistent seat sealing across recurring operational cycles.

Technical Specifications

Item	Specification
Valve Types	Ball, Gate, Globe, Check, Butterfly, Plug
Nominal Size	DN15–DN600 (NPS 1/2–24)
Pressure Rating	PN16–PN420 / ASME Class 150–2500
Temperature Range	Up to -196°C (-320°F)
Body Materials	Stainless Steel (CF8, CF8M, CF3, CF3M), Low Temperature Carbon Steel (LCC, LCB), Duplex Stainless Steel (F51, F53)
Seat Materials	PTFE, Reinforced PTFE (R-PTFE), PCTFE
Connection Types	Flanged (RF, RTJ), Butt Weld (BW), Socket Weld (SW), Threaded (NPT)
Operation	Manual Lever, Bevel Gear, Electric Actuator, Pneumatic Actuator
Design Standards	API 6D, API 600, API 602, API 609, ASME B16.34, BS 6364, ISO 28921, DIN, EN

Applications & Industries Served

Suhao Valve cryogenic products are engineered to provide long-term operational performance in low-temperature process equipment, storage systems, and transport infrastructure.

LNG Processing:

Applied throughout natural gas liquefaction plants, LNG storage tanks, marine loading arms, ISO tank containers, and regasification terminals.

Industrial Gas:

Engineered for cryogenic liquid production, storage, and distribution systems handling liquid oxygen, nitrogen, argon, helium, and carbon dioxide.

Air Separation Plants:

Integrated into cold box modules, distillation columns, and liquid extraction units where stable shut-off performance and tight seat sealing are essential.

Petrochemical Facilities:

Supports low-temperature ethylene, propylene, and cold hydrocarbon fluid processing pipelines and tank storage infrastructure.

Energy & Industrial Projects:

Deployed in specialized cryogenic test rigs, aerospace propellant transfer lines, and low-temperature utility systems requiring dependable fluid containment.

Manufacturing Capability

Integrated Production: Production facilities house machining, washing, degreasing, clean assembly, pressure testing, and inspection processes under one unified quality system to eliminate contamination risks.
Precision Machining: Advanced CNC turning centers and milling machinery hold exact manufacturing tolerances, ensuring precise alignment of valve stems, body seats, and internal sealing surfaces.
Flexible Manufacturing: Capable of handling standard volume production alongside customized project-based orders, special trim modifications, and non-standard connection dimensions.
Export Supply Capability: Production schedules and logistics workflows are organized to manage international project schedules, supporting complete export documentation and long-term project deliveries.

Quality Control & Cryogenic Testing

01/

Raw Material Inspection: All incoming castings, forgings, bar stock, and seals undergo strict chemical analysis, mechanical property evaluation, and low-temperature impact testing to verify material compliance before production starts.

02/

Dimensional Inspection: Precision measuring tools and coordinate measuring machines verify critical machining tolerances, wall thickness, and surface finishes throughout stem, body, and bonnet production.

03/

Pressure & Leakage Testing: Every completed valve undergoes hydrostatic body testing and high-pressure pneumatic seat leakage testing in accordance with international valve testing standards prior to painting or packing.

04/

Cryogenic Performance Verification: Cryogenic cold-shock testing and low-temperature seat leakage verification at -196°C using liquid nitrogen immersion can be performed based on project technical requirements.

Certifications

Manufacturing and quality management are supported by internationally recognized certifications.
Special Equipment Manufacturing License of the People's Republic of China
High-tech Enterprise Certificate
Quality Management System Certification
Environmental Management System Certification
Occupational Health and Safety Management System Certification

Custom Manufacturing Services

Suhao Valve offers tailored design and manufacturing options to satisfy complex fluid handling environments and specific client engineering standards.

Material Selection:

Alternative valve body, internal trim, stem, and seat materials are available to meet unique combinations of temperature, pressure, and fluid corrosivity.

Product Configuration:

Specialized pressure ratings, non-standard face-to-face lengths, custom extended bonnet lengths, actuation interfaces, and specific flange connection styles are available.

OEM Manufacturing:

We support private labeling, custom nameplate engraving, dedicated project tagging, specialized packaging, and customer-branded technical documentation for engineering partners and distributors.

Engineering Support:

Our technical team offers comprehensive support during project planning, aiding in valve sizing, material specification, pressure rating verification, and product selection.

Packaging &Delivery

Export Packaging:

Valves undergo rigorous cleaning, degreasing (for oxygen service when required), cap sealing, protective wrapping, and packing inside heavy-duty, export-grade wooden cases to prevent damage during ocean or air transport.

Global Shipment:

Flexible shipping logistics accommodate sea freight, air freight, and multimodal transport options tailored to project delivery timelines and site schedules.

Documentation Support:

Detailed material test certificates (MTRs), pressure test records, non-destructive examination (NDE) reports, dimensional inspection sheets, and certificate of origin documents are provided with shipments.

FAQ

Q: What temperature range are cryogenic valves designed for?

A: Suhao Valve cryogenic valves are designed for low-temperature and cryogenic applications operating down to -196°C, depending on the selected body material, trim configuration, and soft seat compound.

Q: Which industries commonly use cryogenic valves?

A: Cryogenic valves are used across LNG liquefaction and receiving terminals, industrial gas production plants, air separation facilities, petrochemical units handling cold fluids, and liquid gas storage networks.

Q: What materials are available?

A: Common body materials include austenitic stainless steel grades such as CF8, CF8M, CF3, and CF3M, low-temperature carbon steel such as LCC and LCB, and duplex stainless steel grades. Seats feature resilient materials such as PTFE, R-PTFE, and PCTFE.

Q: Can valves be customized?

A: Yes. Suhao Valve provides customization covering nominal size, pressure rating, body trim materials, extended bonnet length, flange end configuration, actuation type, and marking requirements.

Q: Are valves tested before delivery?

A: Yes. Every valve undergoes factory hydrostatic and pneumatic pressure testing to verify structural strength and seat tightness. Low-temperature cryogenic testing at -196°C can be performed based on project specifications.

Q: What certifications are available?

A: Our manufacturing facilities operate under certified management systems, including ISO 9001, ISO 14001, ISO 45001, Special Equipment Manufacturing License, and High-tech Enterprise certificates.

Q: Do you support OEM manufacturing?

A: Yes. We offer complete OEM services, including custom nameplate tagging, private labeling, specific paint systems, specialized packaging, and tailored product documentation for global distributors and project contractors.

Q: What after-sales support is provided?

A: We offer technical assistance, installation guidelines, maintenance manuals, spare seal kits, and responsive product support to assist operational teams throughout the valve lifecycle.

Request a Quote

Looking for a reliable cryogenic valve manufacturer for your next industrial project? Contact our engineering team to discuss valve selection, technical specifications, customization requirements, and quotation support. We are ready to provide manufacturing solutions tailored to your application.

We are one of the most experienced cryogenic valves manufacturers and suppliers in China, specialized in providing high quality customized service. Please feel free to wholesale durable cryogenic valves in stock here from our factory. Also, quotation is available.