AT pneumatic O type cut-off ball valve
Nominal pressure: 1.6MPa-6.4Mpa
Applicable temperature: -28℃ - 300℃
Body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti
Applicable medium: steam, water, nitric acid, acetic acid
Overview of AT pneumatic flanged ball valves
AT pneumatic valve pneumatic actuator using our new AT/GT series of
pneumatic actuators, the structure of national utility model patents,
there are double and single acting type (spring), with rack and pinion
drive structure, the performance is more safe and reliable.
One: AT pneumatic valve profile method in basketball
AT pneumatic valve pneumatic actuator using our new AT/GT series
of pneumatic actuators, the structure of national utility model
patents, there are double and single acting type (spring), with rack and
pinion drive structure, the performance is more safe and reliable;
large diameter valves using AW series pneumatic actuator, fork the
transmission type structure, reasonable structure, large output torque.
AT pneumatic flanged ball valve has one second time to cut off
the ball valve. It is equipped with explosion-proof device and can be
cut off by gas. Is the ball valve and single acting piston pneumatic
actuator which is widely used in natural gas, oil, chemical industry,
metallurgy, papermaking, printing and dyeing, office electric mining,
bio pharmaceutical, daily chemicals, food and beverage, water treatment
and air treatment industry cut off control, and automatic pneumatic
instrument supporting the use of.
Two: AT pneumatic flange ball valve working principle
AT pneumatic flanged ball valve consists of valve body, sphere, valve
shaft, seal ring, packing, pressure plate and other components. The
actuating mechanism is composed of gas, piston, gear type, output shaft,
cylinder head, bearing, guide ring, piston bush, adjusting bolt and
other main components. The actuating mechanism is connected with the
connecting shaft of the valve. The cylinder pressure input, acting on
the piston to produce certain thrust, the gear type output in piston
driven gear output shaft to rotate the valve, drive shaft rotation, so
that the ball valve in the valve with the rotation, change the valve
flow area, to change the media flow through the valve to.
Three: AT pneumatic flanged ball valve product features
1 、 thrust bearings reduce the friction torque of the stem, so that the valve stem can be operated stably for a long time.
2, The valve seat sealing performance is good, using PTFE and other elastic material made of sealing rings.
3, Antistatic function: a spring is arranged between the
ball, the valve stem and the valve body, so that the static electricity
generated by the switching process can be exported.
4, The stem seal is reliable, because the stem only for rotating and
moving without lifting movement, stem packing seal is not easy to
destroy.
5, Because PTFE and other materials have good self lubrication, and
ball friction loss is small, so long service life of the ball valve.
6, Cutting speed, with a second time cutting capacity, and good
sealing performance, can be equipped with explosion-proof devices, gas
pipes can be cut off.
Four: AT pneumatic flange ball valve parts and materials
| NO. | Part name | NO. | Part name | NO. | Part name | NO. | Part name | NO. | Part name |
| 1 | Valve body | 4 | Nut | 7 | Shim | 10 | Positioning plate | 13 | The stem |
| 2 | Seal ring | 5 | Stud | 8 | Filler | 11 | Ring | 14 | Screw |
| 3 | Sphere | 6 | The stone body | 9 | Packing gland | 12 | Handle | 15 | Thrust washer |
Five: AT pneumatic flanged ball valve performance parameters
| Test pressure（Mpa） | Nominal pressure（Mpa） | Pressure stage（class） | JIS(Mpa) | |||||||
| 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 150 | 300 | 600 | 10K | 20K | |
| Strength test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 3.1 | 7.8 | 15.3 | 2.4 | 3.8 |
| Sealing test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 2.2 | 5.6 | 11.2 | 1.5 | 2.8 |
| Airtight test | 0.5～0.7 | |||||||||
Six: AT pneumatic flange ball valve technical parameters
| Nominal diameter [mm] | DN15-DN300 | |||
| Material code | C | P | R | |
| Main parts | Valve body | WCB | ZG1Cr18Ni9Ti | ZG1Cr18Ni 12Mo2Ti |
| Spheroid | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12MoTi | |
| Valve stem | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12MoTi | |
| Seal ring | Reinforced polytetrafluoroethylene | |||
| Packing | PTFE flexible graphite | |||
| Applicable condition | Applicable medium | Steam, water | Nitrates | Acetic acid |
| Applicable temperature | -28℃ - 300℃ | |||
| Actuator | Model | AW, DA/SR series, GTE series, TH series and so on | ||
| Gas pressure | 0.4-0.7MPa | |||
