Pneumatic Control Ball Valve

Short Description:

The pneumatic control ball valve is composed of a pneumatic actuator, a ball valve and a valve positioner. It adopts a 4-20mA control signal (HART protocol is optional) to control the valve opening, ...

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Product Detail

As a rotary ball valve with a 90° rotation angle, the pneumatic control ball valve has the advantages of compact structure, small volume, reliable operation, low flow resistance coefficient, good sealing performance, easy maintenance, convenient installation and strong adaptability. It is especially suitable for occasions where the medium is viscous, contains particles or fibers. It is widely used in industrial automatic control systems such as petroleum, chemical industry, teaching equipment, light industry, high-pressure equipment, pharmaceuticals, papermaking, etc., for long-distance centralized control or on-site control.

Performance Parameters

Parameter Item	Specification
Nominal Diameter (mm)	15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300
Flow Coefficient (Kv)	21, 38, 72, 112, 170, 273, 384, 512, 940, 1452, 2222, 3589, 5128, 7359
Nominal Pressure (MPa)	PN1.6, 2.5, 4.0, 6.4MPa
Leakage Rate	Soft seal: Zero leakage; Hard seal: ≤ 10⁻⁵ of rated flow
Valve Body Type	Two-piece valve body (floating ball), Two-piece valve body (fixed ball)
Ball Core Type	O-type spherical ball core
Sealing Packing	Polytetrafluoroethylene (PTFE), Metal Graphite Spiral Wound Gasket
Connection Type	Flange, Welding, Thread
Flow Characteristic	Quick-opening characteristic
Adjustable Range Ratio	DN15-65: 250:1; DN80-300: 350:1
Applicable Temperature (by Seal Face)	PTFE≤150℃, RTFE≤180℃, PPL≤300℃, Hard Seal≤450℃
Matched Actuator	GT, AT, AR, AW series single-acting and double-acting pneumatic actuators (optional)
Control Mode	Two-position on-off control, 4-20mA analog quantity control