Industrial Valve Pneumatic Thin Type Ball Valve with Indicator Positioner
Summary:
VQ640F/H pneumatic ball valve is a kind of high-precision control valve of right-angle rotary structure, which can be divided into pneumatic regulating ball valve and pneumatic v-type cut-off ball valve. It is used in conjunction with valve positioner to achieve proportional adjustment. It cavities with a two-position five-way electromagnetic valve and a control box. Pneumatic v-type ball valve spool is designed with a special shape of v-type notch, with accurate closure and control function, pneumatic v-type ball valve is suitable for various control occasions, with compact structure, small volume, can be installed and other advantages. Pneumatic V type regulating ball valve is suitable for castration of gas, liquid and solid granular media. Because the spool and seat is no clearance between the rotary, so there is a great shear force and self-cleaning performance. It is especially suitable for the control of suspension and solid particles containing fibrous or small solid particles. Therefore, pneumatic v-type ball valve, pneumatic v-type regulating ball valve, pneumatic cut off ball valve can be widely used in petroleum, chemical, paper, chemical fiber, electric power, metallurgy, pharmaceutical, environmental protection and other industrial departments of the automatic control system.
Pneumatic V Type Ball Valve Features
(1) Pneumatic v-type ball valve consists of valve body, pneumatic actuator and other accessories. It is a right Angle rotary structure of the senior control valve. V-type ball valve does not need to be repaired for a long time, long service life, to provide you with a truly efficient control of the process of a valve.
(2) Excellent regulation characteristics. Pneumatic v-type ball valve has an approximate equal percentage of the inherent flow characteristics and up to 300:1 adjustable ratio. Therefore, pneumatic v-type ball valves can provide accurate control over a wide range of variations.
(3) Maximum flow volume. Due to its streamlined shape and full right Angle turn control, this makes the maximum volume particularly high, flow capacity is particularly large, flow resistance is small, so can use a smaller more economical valve size.
(4) Pneumatic ball valve adopts double bearing structure, high mechanical stability, small starting torque, ensure the valve has excellent sensitivity and induction speed.
(5) Maximum reliability (safety). The valve body is an integral mechanism, rugged, operation is not affected by pipe pressure, and can avoid leakage of the valve body.
(6) Excellent sealing of metal seats. Pneumatic v-type ball valve with movable metal seats, with the compensation function, and has excellent sealing performance and long service life.
| Technical Parameters Pneumatic Cut off Ball Valve |
| Size DN(mm) |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
| KV |
32 |
43 |
78 |
90 |
160 |
250 |
360 |
610 |
1120 |
1850 |
2950 |
3700 |
7195 |
11466 |
| Pressure(MPa) |
PN1.6,2.5,4.0,6.4MPa; ANSI 150,300LB |
| Strength test |
2.4~9.6MPa |
| Sealing test |
1.76~7.0MPa |
| Flow characteristic |
Approximate fast open characteristic |
| Adjustable range |
0º~90º |
| Allowable leakage level |
EPDEM:
zero leakage
Metal to metal: less than Cv*0.001% |
EPDEM: Micro air bubble level
Metal to metal: less than Cv*0.065% |
| Flow characteristic |
Approximate fast open characteristic |
| Adjustable ratio |
250:1 |
300:1 |
| Working Temperature |
Sealing surface |
| PTFE≤150ºC; RTFE≤180ºC; PPL≤300ºC; Metal to mrtal≤450ºC |
| Technical Parameters of Pneumatic Actuator |
| Actuator Model |
GT/AT/AR/AW series pneumatic actuator |
| Supply Pressure |
0.4~0.7MPa |
| Air connection |
G1/4"; G1/8"; G3/8"; G1/2" |
| Working Temperature |
-30ºC~+70ºC |
| Action Type |
Single acting/ Double acting |
| Accessory |
Positioner, solenoid valve, air filter pressure reducer, position retaining valve, travel switch, valve position transmitter, handwheel mechanism, etc. |
| Materaial of Parts |
| Part name |
Material |
| Body |
WCB |
304(CF8) |
316(CF8M) |
316L(CF3M) |
| Ball |
2Cr13+Nitriding treatment |
304 |
316 |
316L |
| Stem |
2Cr13 |
304 |
316 |
316L |
| Seat sealing ring |
PTFE; PPL; Metal(H,Y) |
| Packing |
V-type PTFE; Flexible graphite |
| Applicable Medium |
Steam; Water; Oil |
Acetic Acid |
| Working Temperature |
-28ºC~+300ºC |
| Testing of Pneumatic V Type Ball Valve |
| Size DN(mm) |
DN15-300 |
| Nominal Pressure |
PN(MPa) |
1.0 |
1.6 |
2.5 |
4.0 |
| Testing Pressure |
Strength test |
1.5 |
2.4 |
3.75 |
6.0 |
| Sealing test |
1.1 |
1.76 |
2.75 |
4.4 |
| Low pressure air tightness test |
0.5~0.7 |
| Medium |
Water/ Oil/ Steam/ Nitrose/ Acetic Acid |
The Features of Pneumatic Actuators
The new series of pneumatic actuators, double acting and single acting (spring reset), thallium rack transmission, safe and reliable: large diameter valve series AW pneumatic actuator fork type transmission, reasonable structure, large output torque, double acting and single acting.
1. Gear type double piston, large output torque, small volume.
2. The cylinder is made of aluminum alloy with light weight and beautiful appearance.
3. Manual operating mechanism can be installed at the top and bottom.
4. Rack type connection adjustable opening Angle, rated flow.
5. The actuator can choose live signal feedback instruction and various accessories to realize automatic operation.
6. IS05211 standard connection provides convenience for product installation and replacement.
7. Both ends of the adjusting screw can make standard products at 0 degrees and 90 degrees have a + 4 ° adjustable range, precision to ensure synchronization with the valve.
Pneumatic V Type Ball Valve Product Selection
(1) Valve body parameters: nominal size, working pressure, process medium, service situation, valve body material and other series parameters.
(2) Actuator parameters: actuator form, control mode, control signal (4-20ma, 1-5v), action mode (open air type; Air closed type)
Zhitai Valve provides the above technical parameters in detail, which is convenient for our production and technical personnel to accurately select the model for you. If you have any questions, you can call us, we will do our best to provide you with quality service!
Company Introduction
Zhitai Valve Co., Ltd is a member of Valve Association of Longwan District, is located in Longwan Central Industrial Zone, Wenzhou City. It'a professional technology company integrated with development, manufacturing, sales, and after-sales services of valve actuators and and self-controlled valves. Presently, our main products include: pneumatic actuators, pneumatic valves and pneumatic control valves; electric actuators, electeic valves and eletric control valves; automatic control products. Our products are widely applied in natural gas, electricity, petroleum, chemical, metallurgical, construction, pharmacy, paper, printing and dying. Zhitai series actuators and valves are the best choice for automatic fluid control engineering and equipment manufacturing. We sincerely welcome customers from home and abrode to visit us for supervision, communication and cooperation. It's a great honor for us to cooperate with you.
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