Principle of the selection of pneumatic ball valve

to choose in the original are supervisors, oil and natural gas transportation lines, cleaning the pipeline, and to be buried in the ground, choice of menstruation, all welded structure of pneumatic ball valve; Buried in the ground, choose the drift diameter welding connection or flange connection of the pneumatic ball valve; Branch, choose flange connection, welding connection, the menstruation or reducing pneumatic ball valve. , selection of product oil pipeline and storage equipment, pneumatic ball valve flange connection. The pipeline, city gas and natural gas, selects the flange connection and floating ball pneumatic valve internal thread connection. Oxygen in the pipeline system, metallurgy system, appropriate chooses through strict degreasing processing, pneumatic valve flange connection of the fixed ball ball. And low temperature medium pipeline system and device, appropriate chooses and pneumatic valve cover pneumatic valve ball at low temperature. , oil refining equipment of catalytic cracking unit of piping system, can choose lifting lever type pneumatic valve ball. Device, chemical systems, such as acid and alkali corrosive medium and pipeline system, appropriate chooses austenitic stainless steel, teflon for pneumatic seat of sealing ring and stainless steel ball valve. , metallurgy system, power system, petrochemical plant, city heating system in high temperature medium pipeline system or device, can choose a metal to metal sealed ball pneumatic valve. , the need for flow control, can choose the worm gear and worm drive, pneumatic or electric adjustment pneumatic ball valve with v-shaped opening.