- 196 ℃ long diameter cryogenic pneumatic ball valve ultra-low temperature ball valve
Alternative name: pneumatic cryogenic ball valve cryogenic pneumatic shut-off valve pneumatic cryogenic shut-off valve
Model: DQ641F-25P DQ641F-40P
Overview of pneumatic cryogenic ball valve:
- 196 ℃ long diameter cryogenic pneumatic ball valve adopts a long neck structure, which aims to protect the stuffing box function, keep the stuffing box far away from the low temperature, and ensure the sealing effect of the packing. At the same time, cold insulation materials can also be wound to prevent cold energy loss. The length of the neck of the long neck can be selected according to the use temperature and the thickness of the cold insulation materials. When the sealing effect of the packing is reduced, lubricating grease can be added from the middle of the stuffing box to form an oil seal, reducing the differential pressure of the stuffing box and improving the sealing performance. It is suitable for the management system of cryogenic liquid storage and transportation equipment. It has the characteristics of flexible switch and reliable sealing, and can also be used for the management system of other cryogenic and cryogenic media.
Technical parameters of cryogenic pneumatic ball valve:
Valve body material: 304/CF8 stainless steel
Diameter and specification: DN15~DN150
Application pressure: PN16, PN25, PN40
Connection type: flange, thread, welding
Drive mode: manual, pneumatic, electric
Product specification of low temperature long diameter ball valve:
Design specification: GB/T 12237 JB/T 7745、API608、API6D
Structure length: GB/T12221 JB/T7745、ANSIB16.10、API6D
Connecting flange: JB/T 79, ANSIB16.5
Test and inspection: JB/T 9092, API598, API6D
Product identification: GB/T 12220, MSS SP-25, API6D
Supply specification: JB/T7928, API608, API6D
- 196 ℃ long diameter pneumatic cryogenic ball valve- Ultra low temperature ball valve The one-way elastic ball sealing structure is adopted, and the pressure relief hole is designed at the pressure inlet end, which has a structure to prevent abnormal pressure rise. Because the volume of the low-temperature valve medium expands rapidly after gasification, and the pressure rises abnormally, when the pressure in the valve cavity rises, the medium pressure in the valve cavity is connected with the inlet pipe, so as to ensure that the valve can be used safely without being affected by temperature difference. The valve body is marked with a flow direction sign. Pay attention to the flow direction arrow before installation.
Shanghai low temperature Emergency shut-off valve manufactor -The products of Shanghai Yonglong Valve Factory include: low temperature stop valve, low temperature emergency stop valve, low temperature electric ball valve, low temperature ball valve, low temperature check valve, low temperature filter, low temperature stop valve and other products. Non standard products can be processed according to the technical parameters and relevant drawings provided by users. Yonglong cryogenic valves are widely used in ethylene, liquefied natural gas devices, natural gas LPG LNG storage tanks, air separation equipment, petrochemical tail gas separation equipment, liquid oxygen, liquid nitrogen, liquid argon, carbon dioxide cryogenic storage tanks and tank cars, PSA oxygen generation devices, etc. The exported liquid cryogenic media, such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products and other mechanical equipment supporting facilities.
