Products
Cryogenic Globe Valve Extended Bonnet for -196℃
✧ Description
Cryogenic globe valves with extended bonnets designed for operation at temperatures as low as -196°C are specially engineered to handle the extreme conditions of cryogenic applications. The extended bonnet provides additional insulation and protection for the valve stem and packing to ensure proper functioning at such low temperatures. These valves are commonly used in industries such as LNG (liquefied natural gas) processing, industrial gas production, and other cryogenic fluid handling applications.Key considerations for cryogenic globe valves for -196°C include:Materials: These valves are constructed using specialized materials that can maintain their integrity and performance in cryogenic environments. Common materials include stainless steel, carbon steel, and other alloys with low-temperature properties.Sealing and Packing: The valve's sealing components and packing must be designed to remain effective and flexible at extremely low temperatures to prevent leakage and maintain tight shut-off.Testing and Compliance: Cryogenic globe valves for such low temperatures undergo stringent testing to ensure performance and compliance with industry standards for cryogenic service.Insulation: The extended bonnet design provides insulation to protect critical components from extreme cold and to avoid the risk of ice formation that could impede valve operation.These valves are critical components in ensuring the safe and reliable control of cryogenic fluid flows.
✧ Features of Cryogenic Globe Valve Extended Bonnet for -196℃
1. The valve bonnet is designed to extended bonnet structure, which can isolate the influence of low temperature media on the packing, prevent the performance of the cover seal, and also make the valve open and close flexibly;
2. the filler adopts flexible graphite or polytetrafluoroethylene combined structure, with good low temperature resistance;
3. the low-temperature valve adopts the structure of opening a decompression hole on the valve core. Gasket adopts stainless steel leather clip polytetrafluoroethylene or flexible graphite winding structure;
4. when the valve is closed, in order to prevent the low-temperature medium in the valve chamber from rising due to temperature, resulting in abnormal pressure increase, pressure relief structure is provided on the high pressure side of the gate or valve body;
5. the sealing surface of the valve surfacing cobalt-based cemented carbide, tungsten carbide at low temperature deformation is small, wear resistance, can maintain good sealing performance.
Because the output of liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum and other products are not only flammable and explosive, but also gasification when heating up, and the volume expands hundreds of times when gasification. The material of the low-temperature valve is very important, and the material is unqualified, which will cause the external leakage or internal leakage of the shell and sealing surface; The comprehensive mechanical properties, strength and steel of the parts can not meet the requirements of use or even break; Resulting in liquefied natural gas medium leakage caused by the explosion. Therefore, in the process of developing, designing and developing low-temperature valves, material treatment is the primary key issue.
✧ Advantages of Cryogenic Globe Valve Extended Bonnet for -196℃
During the opening and closing process of the forged steel globe valve, because the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, it is wear-resistant.
The opening or closing stroke of the valve stem is relatively short, and it has a very reliable cut-off function, and because the change of the valve seat port is proportional to the stroke of the valve disc, it is very suitable for the adjustment of the flow rate. Therefore, this type of valve is very suitable for cut-off or regulation and throttling.
✧ Parameters of Cryogenic Globe Valve Extended Bonnet for -196℃
| Product | Cryogenic Globe Valve Extended Bonnet for -196℃ |
| Nominal diameter | NPS 2”, 3”, 4”, 6”, 8” , 10” , 12” , 14”, 16”, 18”, 20” 24”, 28”, 32”, 36”, 40”, 48” |
| Nominal diameter | Class 150, 300, 600, 900, 1500, 2500. |
| End Connection | Flanged (RF, RTJ, FF), Welded. |
| Operation | Handle Wheel, Pneumatic Actuator, Electric Actuator, Bare Stem |
| Materials | A216 WCB, WC6, WC9, A352 LCB, A351 CF8, CF8M, CF3, CF3M, A995 4A, A995 5A, A995 6A, Alloy 20, Monel, Inconel, Hastelloy, Aluminum Bronze and other special alloy. |
| A105, LF2, F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy | |
| Structure | Outside Screw & Yoke (OS&Y)，Pressure Seal Bonnet |
| Design and Manufacturer | API 600, API 603, ASME B16.34 |
| Face to Face | ASME B16.10 |
| End Connection | ASME B16.5 (RF & RTJ) |
| ASME B16.25 (BW) | |
| Test and Inspection | API 598 |
| Other | NACE MR-0175, NACE MR-0103, ISO 15848, API624 |
| Also available per | PT, UT, RT,MT. |
✧ After Sale Service
As a professional forged steel valve manufacturer and exporter, we promise to provide customers with high-quality after-sales service, including the following:
1.Provide product usage guidance and maintenance suggestions.
2.For failures caused by product quality problems, we promise to provide technical support and troubleshooting within the shortest possible time.
3.Except for damage caused by normal use, we provide free repair and replacement services.
4.We promise to respond quickly to customer service needs during the product warranty period.
5. We provide long-term technical support, online consulting and training services. Our goal is to provide customers with the best service experience and make customers' experience more pleasant and easy.
