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Q641F Pneumatic Flange Ball Valve

  • Model:Q641F-16C/Q641F-25C/Q641F-40C/Q641F-16P/Q641F-25P/Q641F-40P/
  • Specification:DN20-DN200
  • Temperature:≤200℃
  • Medium:Water, steam, oil
  • Pressure:PN16,PN25,PN40
  • Connection method:Flange
  • Driving method:pneumatic
  • Material:Carbon steel,stainless steel,Bronze
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  • Product Overview
  • Performance Data
  • Size Weight

Q641F Pneumatic Flange Ball Valve Overview

Q641F pneumatic flange ball valve is an automated control valve powered by compressed air, which is composed of a flange connected ball valve body and a pneumatic actuator. The valve is driven by an actuator to rotate the valve stem and the ball 90 degrees, achieving rapid opening and closing. The valve body is usually made of cast steel or stainless steel, and the sealing pair is mostly made of soft materials such as polytetrafluoroethylene (PTFE) to ensure reliable sealing. This valve can be activated by receiving pneumatic signals (usually 4-20mA or switch signals) from the control system, and is suitable for situations that require quick cut-off, remote control, or frequent operation. It is widely used in fluid pipeline systems of petroleum, chemical, power, light industry, and automation production lines to achieve automatic control of water, steam, oil products, and general corrosive media.

Q641F Pneumatic Flange Ball Valve Product Image

Q641F Pneumatic Flange Ball Valve Features

1. Pneumatic Drive Rapid Response: Using single or double acting pneumatic actuators, the action is rapid, the opening and closing time is short (usually only a few seconds), the response is sensitive, and it is suitable for control circuits that require rapid cutting off or process automation.

2. Multiple control and accessory options: can be equipped with pneumatic triple components (filter, pressure reducing valve, oil mist device), solenoid valve, limit switch, locator and other accessories, easily achieving remote control, switch signal feedback and precise proportional adjustment, with high integration.

3. Compact structure and high reliability: The actuator and valve are installed in a direct connection or bracket style, with a compact and sturdy structure. When the gas source is lost, the single acting spring reset type can automatically return to the open or closed state to ensure system safety.

4. Excellent sealing and universal performance: The ball and PTFE valve seat form a tight soft seal, with a high leakage level. Valves combine the stability of flange connections with the convenience of pneumatic control, making them suitable for various medium and low pressure conditions.

5. Easy maintenance and high safety: Modular design facilitates separate maintenance of the actuator and valve body. Valves usually have fire-resistant and anti-static designs, with anti blowing structures for the valve stem, and can be safely used in flammable and explosive environments.

Q641F Pneumatic Flange Ball Valve Structure Diagram

Parts Name Material List

序 号NO.名称Name材料Material
1阀体Body碳钢Carbon steel
2球体Ball20cr13
3密封圈sealing ring聚四氟乙烯PTFE
4填料packing聚四氟乙烯PTFE
5阀杆Stem20cr13
性能规范表Performance Specification
公称压力Nominal Pressure1.6/2.5/4Mpa
强度试验压力Shell Test2.4/3.75/6
密封试验压力Seal Test1.76/2.75/4.4
适用温度Suitable Temp.≤200


Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard GB/T 12221.

2. The connecting flange shall conform to the standard GB/T 9113.

Q641F Pneumatic Flange Ball Valve View Drawing

Q641F Pneumatic Flange Ball Valve Dimensions Table

型号Model尺寸Size公称尺寸DN
20253240506580100125150200
Q641F-16CL140160165180200220250280320360457
D105115140150165185200220250285340
H252265268282289364462477575614708
Q641F-25L140160165180200220250280320360457
D105115140150165185200235270300360
H252265268282289364462477575614708
Q641F-40L152165178190216241283305380403502
D105115140150165185200235270300375
H252265268282289364462477575614708


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