Industrial valves · Клапан криогенный Neway
Neway Cryogenic Shut-off Valves: Engineering Solutions and Technical Specifications
Neway cryogenic shut-off valves are designed for precise flow control in media with temperatures down to -196 °C. These valves are integral components of systems for storing, transporting, and processing liquefied industrial gases such as LNG, LPG, as well as liquid nitrogen, hydrogen, argon, and oxygen. The engineering solutions embedded in the design ensure reliable operation and controllability in conditions where standard valves lose functionality due to brittle material failure.
Key Design Solutions in Neway Cryogenic Valves
- Extended bonnet (gas barrier): This design increases the distance from the stem packing to the cold working medium, which minimizes heat transfer to the packing assembly. This solution prevents frosting and jamming, guaranteeing stable actuator operation and precise positioning of the shut-off element.
- Material selection: Body parts and internal components are manufactured from austenitic stainless steels (316L, 304L) and special alloys. These materials maintain high impact toughness at cryogenic temperatures, eliminating the risk of brittle fracture.
- Sealing system: The use of composite materials based on polytetrafluoroethylene (PTFE) and other polymers with a low and predictable coefficient of thermal expansion (CTE) guarantees Class VI shut-off tightness according to API 598 even after multiple thermal cycles.
- Explosion safety: The design provides for anti-static execution to dissipate static electricity, which prevents sparking and is a mandatory requirement when working with explosive media such as liquefied hydrogen or methane.
- Reliability and tightness: Durable sealing assemblies minimize uncontrolled leaks of the working medium, which reduces operating costs and ensures personnel safety and process stability.
Engineering and Technical Parameters of Neway Cryogenic Valves
Pressure parameters and sizes
EV Group China supplies a full range of Neway valves with nominal bore from 1/2" to 120" (DN15–DN3000). The operating pressure range corresponds to ASME Class 150 – 2500 (PN16–PN420), allowing these valves to be used in any systems: from local installations to main pipelines.
Materials and connection types
Bodies are made of cryogenic stainless steels, ensuring excellent corrosion resistance and a long service life. Pipeline connection options include flanged (RF, RTJ) and butt-weld (BW), which provides versatility of installation and high connection reliability.
Control systems
Valves can be equipped with various types of actuators, including manual gearboxes, as well as pneumatic, electric, and hydraulic actuators. This ensures flexibility in control and easy integration into automated process control systems (APCS).
| Type of cryogenic valve | Gate valve | Globe valve | Check valve | Ball valve (trunnion, top entry) | Ball valve (floating, top entry) | Ball valve (floating, side entry) | Ball valve (trunnion, side entry) | Butterfly valve | Control valve |
|---|---|---|---|---|---|---|---|---|---|
| Size | 1/2"~52" (DN15~DN1300) | 1/2"~42" (DN15~DN1050) | 1/2"~64" (DN15~DN1600) | 2"~24" (DN50~DN600) | 1/2"~3" (DN15~DN40) | 1/2"~3" (DN15~DN40) | 2"~24" (DN50~DN600) | 3"~120" (DN80~DN3000) | 3/4"~12" (DN20~DN300) |
| Pressure | ASME CLASS 150~2500 (PN16~PN250) | ASME CLASS 150~2500 (PN16~PN250) | ASME CLASS 150~2500 (PN16~PN250) | ASME CLASS 150~900 (PN16~PN150) | ASME CLASS 150~1500 (PN16~PN250) | ASME CLASS 150~1500 (PN16~PN250) | ASME CLASS 150~900 (PN16~PN150) | ASME CLASS 150~600 (PN20~PN100) | ASME CLASS 150~2500 (PN16~PN420) |
| Connection Type | RF, BW, RTJ | RF, BW, RTJ | RF, BW, RTJ | RF, BW, RTJ | RF, BW | RF, BW | RF, BW, RTJ | WAFER, LUG, RF, BW | RF, BW, RTJ |
Areas of Application and Industrial Solutions
Neway cryogenic valves are a critically important component for enterprises working with liquefied gases (LNG, industrial gases). They are used in air separation units, at LNG receiving and regasification terminals, in chemical and petrochemical industries, where absolute tightness and reliable flow control are required at temperatures down to -196 °C.
Supply of Neway Cryogenic Valves from EV Group China
EV Group China specializes in comprehensive supplies of high-tech pipeline valves for critical industrial applications. Our engineers provide qualified equipment selection for facilities in the fuel and energy complex, chemical industry, and LNG projects.
To receive a technical and commercial proposal for the supply of Neway cryogenic valves, please contact EV Group China engineers. We deliver to all regions, providing full technical and logistical project support.