7. Applicable principle of pneumatic ball valve: for the main pipeline of oil and natural gas transmission, the pipeline that needs to be cleaned, and the pipeline that needs to be buried underground, the pneumatic ball valve with full diameter and full welding structure shall be selected; For those buried on the ground, the pneumatic ball valve connected by welding or flange shall be selected; Branch pipes shall be flanged, welded and full bore or reduced pneumatic ball valves. Flange connected pneumatic ball valve shall be used for product oil transmission pipeline and storage equipment. The floating pneumatic ball valve with flange connection and internal thread connection is selected for the pipeline of city gas and natural gas. In the oxygen pipeline system of the metallurgical system, it is advisable to select the flange connected fixed ball pneumatic ball valve that has undergone strict degreasing treatment. Low temperature pneumatic ball valve with valve cover should be selected for pipeline system and device of low temperature medium. The lifting rod pneumatic ball valve can be selected for the pipeline system of the catalytic cracking unit of the oil refining unit. All stainless steel pneumatic ball valves made of austenitic stainless steel and with polytetrafluoroethylene as the seat sealing ring should be selected for devices and pipeline systems with corrosive media such as acid and alkali in the chemical system. Metal to metal sealed pneumatic ball valves can be selected for pipeline systems or devices of high-temperature media in metallurgical systems, power systems, petrochemical plants and urban heating systems. When flow regulation is required, worm gear driven, pneumatic or electric regulating pneumatic ball valve with V-shaped opening can be selected.

Mystery hidden in product characteristics of high-temperature pneumatic butterfly valve
High temperature resistant pneumatic butterfly valve products are made of austenitic stainless steel, which ensures excellent temperature resistance and corrosion resistance of the hose. The operating temperature range of the hose is extremely wide, ranging from - 196 to 600 degrees. The characteristics of the high-temperature pneumatic butterfly valve also have a mystery.
1. It is used to compensate temperature and absorb vibration, reduce noise, change the direction of medium delivery, and eliminate mechanical displacement between pipes or between pipes and equipment.
2. High temperature resistant pneumatic butterfly valve has excellent flexibility, corrosion resistance, high temperature resistance and high pressure resistance.
3. It has good wear resistance, tensile strength and water resistance. It also provides a certain shielding effect.
4. Absorbing vibration energy can play a role in vibration reduction and noise reduction. Shuangtai high-temperature pneumatic butterfly valve products also have many characteristics such as good flexibility, light weight, corrosion resistance, fatigue resistance, and temperature resistance.