Pneumatic explosion-proof soft sealing flange two-way pressure butterfly valve-Shanghai Yuwang Valve-Product Introduction:
The pneumatic flange butterfly valve is composed of a quarter-stroke pneumatic piston actuator and a butterfly valve body. It is designed with a three-dimensional eccentric principle, so that the space movement trajectory of the sealing surface is idealized, and there is no friction or interference between the sealing surfaces. Coupled with the proper selection of sealing materials, the sealing performance, corrosion resistance, high temperature resistance and wear resistance of the butterfly valve are reliably guaranteed. The pneumatic flange butterfly valve has a small opening torque, is flexible and convenient, and saves effort and energy.
As a component used to cut off the piping system and control the flow, the soft-sealed butterfly valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower and so on. The butterfly plate of the soft sealing butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, the rotation angle is between 0°~90°, when the rotation reaches 90°, the valve is fully open. The characteristics of the new high-life stainless steel butterfly valve and the problems in the use of the butterfly valve. According to the connection mode, the soft sealing butterfly valve can be divided into flange soft sealing butterfly valve, wafer soft sealing butterfly valve, welding soft sealing butterfly valve.
Pneumatic explosion-proof soft sealing flange two-way pressure butterfly valve-product features:
1. The pneumatic wafer butterfly valve is simple in structure, small in size and light in weight. It consists of only a few parts and is easy to install.
2. When the pneumatic wafer butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics.
3. The pneumatic wafer butterfly valve has two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be inlaid on the valve body or attached to the periphery of the butterfly plate.
4. The pneumatic wafer butterfly valve has a long life, but it is difficult to achieve a complete seal. The metal seal can adapt to higher working temperature, while the elastic seal has the defect of being limited by temperature.
5. The clever wedge-shaped design enables the pneumatic wafer ball valve to have an automatic sealing function that is tighter and tighter.
specifications | ||
Design Basis | GB standard | |
design standards | GB/12238 | |
Structure length | Folder link | GB/12221 |
Connection flange size | GB/12221 | |
Experiment and test | JB/T9092 | |
Remarks: The structural length and connection size of the series ball valve can be designed and manufactured according to customer requirements
Parametric technology | |
Nominal diameter | DN15-400mm |
Link method | Flange type |
Cylinder selection | AT series, AW series, AT Series, AW Series |
Cylinder form | Double acting, single acting (spring return) |
control method | Switch type, adjustable type, three-stage type (opening adjustable) |
Nominal pressure | 6, 10, 16bar (if higher pressure is required, please specify the requirements.) |
Air pressure | Double acting: 4-8bar, single acting: 5-8bar |
Medium temperature | W1: -40~180℃ , W5: -20~80℃, W7: -40~160℃ |
Ambient temperature | Standard type: -20~80℃ |
Body material | Cast iron (Q), carbon steel (C), stainless steel (P4, P6) |
Seal material | Nitrile rubber (X), polytetrafluoroethylene (F), fully lined with tetrafluoroethylene (F46) |
