China Manufacturer/ Supplier Pneumatic Shut/ Cut off O Type Ball Valve
Summary:
ZSHO pneumatic cutting new ball valve is composed of imported pneumatic actuator and high quality ball valve. It belongs to pneumatic switch ball valve. Pneumatic cut off ball valve has advantages: good sealing performance, flow capacity, simple structure, long service life, easy maintenance. Pneumatic cut ball valve is with the implementation of a simple structure, compact, excellent performance, large output torque and other characteristics. Pneumatic on-off ball valve can also be equipped with travel limit opening and closing, solenoid valve, pressure reducing valve and 0.4-0.7mpa air source to achieve the switching operation, and two pairs of passive contact signal indicating the opening of the valve. The actuator is divided into two types: single action and double action. The unique advantage of the single action type is that when the power source is in failure, pneumatic switch ball valve will automatically in the open or closed position according to the requirements of the control system. Pneumatic cutting new ball valve is widely used in chemical industry, petroleum, light textile, electric power, food and pharmaceutical, refrigeration, aviation, aerospace, paper and other fields. It can control not only gas, liquid and steam medium, but also sewage and medium containing fiber.
Pneumatic Cut off Ball Valve Features
(1) Low fluid resistance.
(2) Thrust bearing reduces the friction torque of the stem, which can make the stem operate smoothly and flexibly for a long time.
(3) The valve seat sealing performance is good, using PTFE and other elastic materials made of the sealing ring, the structure is easy to seal, and the ball valve sealing ability with the increase of the medium pressure and increase.
(4) Valve stem seal is reliable, because the stem only as a rotating operation and do not do lifting movement, stem packing seal is not easy to damage, and the sealing capacity increases with the increase of medium pressure.
(5) Because PTFE and other materials have good self-lubrication, small friction loss with the ball, so the service life of the ball valve is long.
Technical Parameters Pneumatic Cut off Ball Valve |
Size DN(mm) |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
KV |
21 |
38 |
72 |
112 |
170 |
273 |
384 |
512 |
940 |
1452 |
2222 |
3589 |
5128 |
7359 |
Pressure(MPa) |
PN1.6,2.5,4.0,6.4MPa; ANSI 150,300LB |
Leakage rate |
EPDM:zero leakage; Metal to metal: less than KV 10-5 |
Body |
Two stage type(Floating ball); Two stage type(Fixed ball) |
Spool type |
O- type ball type |
Sealing Packing |
PTFE; Metal Graphite Spiral Wound Gasket |
Conn type |
Flange/ Weld/ Thread |
Flow characteristic |
Approximate fast open characteristic |
Adjustable range |
DN15-65 |
DN80-300 |
250:1 |
350:1 |
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 |
Testing of Pneumatic Cut off 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 |
Medium |
Water/ Oil/ Steam/ Nitrose/ Acetic Acid |
Pneumatic cut off 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.