Hard seal eccentric hemisphere pneumatic valve structure principle and selection principle

hard seal eccentric hemisphere pneumatic valve structure principle and selection principle of
hard seal eccentric hemisphere pneumatic valve using eccentric pneumatic valve, eccentric sphere and pneumatic valve seat, the pneumatic valve stem rotation movement in common path self-centering, shut off more and more tightly in the process of fully achieve good sealing. Pneumatic valve ball and seat completely out, eliminates the sealing ring wear, overcomes the traditional ball wear problem, pneumatic valve seat and the spheroid packing surface of non-metallic elastic material embedded in the metal seat, pneumatic seat metal surface are well protected. Hard seal eccentric hemisphere pneumatic valve is especially suitable for steel, aluminium, fiber, tiny solid particles, pulp, coal ash, such as liquefied petroleum gas (LPG) medium.

eccentric eccentric hemisphere pneumatic valve structure form hemisphere pneumatic valve on the appearance of the structure is divided into two kinds:
, the jacket type: mainly aims at the medium of erosion wear is very serious, jacket structure in damaged open-close part replacement maintenance is very convenient, need not the entire machine pneumatic valve from the piping to be removed, greatly save the maintenance time and cost.
, side mounted, side mounted light quality structure is compact, pneumatic valve, pneumatic valve applies to the place requested space.
hard seal eccentric hemisphere characteristics of pneumatic valve
for eccentric, its structure, principle through the drive mechanism to lock tight tight, adjusting, closing, the purpose of sealing pair is surface contact seal ring hardfacing metal, double eccentric structure in open the pneumatic valve core is located in the hidden ball room, large flow area, and not washed, pneumatic valve closing pneumatic valve core is not washed, open the pneumatic valve core sphere along the pneumatic valve seat gradual, effectively remove scale obstacles, to achieve reliable seal. It to the two-phase mixed flow easily scale solid precipitation mixed flow conveying particularly effective.
the hemisphere with double metal, pneumatic valve, parent metal surfacing on different alloy, pneumatic seat also correspondingly welding through special processing, sealing surface combination into various types such as corrosion, wear resistance, high strength, meet the demand of different occasions.
, sealed tight, transmission harmful gases can reach zero leakage.
and seal of the pneumatic valve core with compensation amount, when the pneumatic valve do wear, closing to turn a little, can reliable seal, prolong the service life. In addition, the user will gland nut off, adjustment or replacement after pneumatic valve seat is still available, avoid the pneumatic valve seal failure, the disadvantages of the dead.
hard seal eccentric hemisphere pneumatic valve suitable for
hard seal eccentric side of the pneumatic valve and the scope of the widely used. Hard seal eccentric hemisphere pneumatic valve can be applied to system such as water, steam, oil; Applicable to the bottom of the dam object completely pneumatic valve and control valve ( High velocity state) Pneumatic valves, suitable for pump system, such as pressurized system, central air conditioning system. Can be configured to safety pneumatic valve, pneumatic valve, flow control tube pneumatic valve, relief valve, etc. , can also be applied to tap water system, gas system, gas system and so on underground pipeline ( Height) 。
eccentric hemisphere pneumatic valve selection principles:
supervisors, oil and natural gas transportation lines, cleaning the pipeline, and to be buried in the ground, with full size, full welded structure pneumatic ball valve; Buried in the ground, choose the full size of welding connection or flange connection of the pneumatic ball valve; Branch, choose flange connection, welding connection, the menstruation or reducing pneumatic ball valve.
and refined oil transmission pipeline and storage equipment, selects the flange connection of the pneumatic ball valve.
the pipeline, city gas and natural gas, the selection of flange connection and internal thread connection of floating ball pneumatic valve.
in the oxygen in the pipeline system, metallurgy system, appropriate chooses strict degreasing process, flange connection of the fixed pneumatic ball valve.
and low temperature medium pipeline system and device, appropriate chooses and pneumatic valve cover pneumatic valve ball at low temperature.
and refining unit of catalytic cracking unit of piping system, can choose lifting lever type pneumatic valve ball.
and chemical systems, such as acid and alkali corrosive medium device and pipeline system, appropriate chooses austenitic stainless steel, teflon for pneumatic seat sealing all stainless steel ball valve.
, metallurgy system, power system, petrochemical plant, city heating system of the pipeline system of high temperature medium or device, can choose a metal to metal sealed ball pneumatic valve.
and the need for flow control, can choose the worm gear and worm drive, pneumatic or electric adjustment pneumatic ball valve with v-shaped opening.
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