Overview of pneumatic central butterfly valve

       Pneumatic butterfly valve is a butterfly plate of the center of rotation (ie valve shaft center), located in the body of the centerline and butterfly plate seal section of the butterfly valve, the connection mode of the clamp and flange. Pneumatic butterfly valve fluid resistance small, medium and large caliber butterfly valve fully open when the effective flow area is large, open and close quickly and cost, the use of compressed air to drive the rotation angle to complete 90 disc pulling hoist, can also be assembled on electrical valve positioner of medium flow, pressure, temperature and other parameters for regulation and control.

Pneumatic central butterfly valve features

1, compact, easy disassembly and maintenance, and can be installed at any location.
2, The structure is simple and compact, the operation torque is small, and the turning of 90 degrees is quick.
3, The flow characteristic is straight line, the adjustment performance is good.
4, the butterfly plate and stem connection using no pin structure, to overcome the possible leakage point.
5, The outer circle of the butterfly plate is made of spherical surface, which improves the sealing performance and prolongs the service life of the valve. The opening and closing of the valve with more than 50 thousand times of pressure still keeps zero leakage.

Technical parameters of pneumatic central butterfly valve

Valve body material：WCB、304、316、UPVC
Valve plate material：304、316、316L、Nylon plate, aluminium bronze, nodular iron, nickel plated
Seal valve base：NBR、EPDM、PTFE【Pressure grade】：1.6MPa
Nominal diameter：DN25-DN1000
Structural form：A, LT lug type
Connection：clamp, flange type
Solenoid valve voltage：AC220V/110V/380V/24V, 50/60HZ, DC24V/12V, +10% to -10%
Temperature range：NBR:-30 ~ 80 DEG C; EPDM:-30 ~ 120 DEG C; PTFE:-30 ~ 130 DEG C
Pneumatic actuator：double acting, single acting
Pneumatic accessories：reversing solenoid valve, limit switch, air filter pressure reducing valve, electrical positioner, hand wheel mechanism

       Pneumatic butterfly valve is important in industrial automation control system, remote centralized control can meet the needs of computer program; now widely used in petroleum, chemical industry, gas equipment, nuclear power equipment, water treatment, air conditioning, iron and steel metallurgy, industrial furnace, canned equipment, brewing equipment, drying equipment vacuum equipment, surface treatment, bio pharmaceutical, food machinery, textile, papermaking and other industries.

Oilfield Industry	Industrial furnace	Food machinery
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