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Shanghai Yuhu Self Control Valve Co., Ltd
Q641F/PPL/H Pneumatic Flange Ball Valve
NegotiableUpdate on 04/07
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Overview
Q641F/PPL/H Pneumatic Flange Ball Valve Pneumatic Flange Ball Valve (Double acting Cylinder) Pneumatic Flange Ball Valve (Single acting Cylinder) I. Overview of Pneumatic Flange Ball Valve Products Shanghai Yuhu Company's pneumatic flange ball valve is composed of high-precision pneumatic actuators and precision cast ball valves
Product Details
Q641F/PPL/H Pneumatic Flange Ball Valve
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|---|---|
| Pneumatic flange ball valve (double acting cylinder) | Pneumatic flange ball valve (single acting cylinder) |
1、 Overview of Pneumatic Flange Ball Valve Products
The pneumatic flange ball valve of Shanghai Yuhu Company is composed of high-precision pneumatic actuators and precision cast ball valves. It is mainly divided into two categories: pneumatic switch ball valves and pneumatic cut-off ball valves. Pneumatic flange ball valves have the advantages of compact structure, small volume, reliable operation, low flow resistance coefficient, good sealing performance, easy maintenance, convenient installation, and strong adaptability. Pneumatic switch ball valve can be equipped with travel limit switch, solenoid valve, pressure reducing valve, and 0.4-0.7MPa gas source to achieve switch operation, and send two pairs of passive contact signals to indicate the switch of the valve. Pneumatic switch ball valves are particularly suitable for situations where the medium is viscous, contains particles, or has fiber properties. Pneumatic flange ball valves are widely used in automatic control systems for industries such as petroleum, chemical, teaching equipment, light industry, high-pressure equipment, pharmaceuticals, and papermaking, for remote centralized control or on-site control.
2、 Product features of pneumatic flange ball valve
(1) Low fluid resistance, ball valves have the lowest fluid resistance among all valve types, even for reduced diameter ball valves, their fluid resistance is quite small.
(2) Thrust bearings reduce the friction torque of the valve stem, allowing for long-term balanced and flexible operation of the valve stem.
(3) The valve seat has good sealing performance and is made of sealing rings made of materials such as polytetrafluoroethylene. The structure is easy to seal, and the sealing ability of the ball valve increases with the increase of medium pressure.
(4) The valve stem seal is reliable. As the valve stem only rotates without lifting, the packing seal of the valve stem is not easily damaged, and the sealing ability increases with the increase of medium pressure.
(5) Due to the good self-lubricating properties of materials such as polytetrafluoroethylene, the friction loss with the ball is small, and the service life of the ball valve is long.
(6) The bottom mounted valve stem and the protruding step at the head of the valve stem prevent the valve stem from spraying out. In the event of a fire causing damage to the valve stem seal, the protruding step can also form a metal contact with the valve body to ensure the valve stem seal.
3、 Main technical parameters of pneumatic flange ball valve
| Nominal diameter DN (mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated flow coefficient KV | 21 | 38 | 72 | 112 | 170 | 273 | 384 | 512 | 940 | 1452 | 2222 | 3589 |
| Nominal pressure (MPa) | PN1.6、2.5、4.0、6.4 MPa； ANSI 150、300LB | |||||||||||
| Allowable pressure difference (MPa) | ≤ nominal pressure | |||||||||||
| Valve body form | Two stage cast ball valve | |||||||||||
| connection type | Flange type, welded type, threaded type | |||||||||||
| Valve core form | O-shaped spherical valve core | |||||||||||
| sealing packing | V-shaped polytetrafluoroethylene packing, flexible graphite packing, etc | |||||||||||
| flow characteristics | Approximate quick opening type | |||||||||||
| Action range | 0～90° | |||||||||||
| Leakage quantity Q | According to GB/T4213-92, less than 0.01% of rated KV | |||||||||||
| adjustable range | 250：1 | 350：1 | ||||||||||
| Configure execution mechanism | Can be equipped with AT, GT, ST, AW and other series of single and double acting pneumatic actuators | |||||||||||
| Control method | Switch type (switch two position control), regulating type (4-20mA control) | |||||||||||
4、 Technical parameters of pneumatic flange ball valve actuator
| Model of actuator | AT, GT, ST, AW and other series of single and double acting pneumatic actuators |
|---|---|
| gas supply pressure | 0.4～0.7MPa |
| air source interface | G1/4"、G1/8"、G3/8"、G1/2" |
| ambient temperature | -30～+70℃ |
| mode of action | Single acting actuator: gas closed type (B) - valve position open when gas is lost (FO); Pneumatic opening (K) - valve position closed when gas is lost (FC) Double acting actuator: gas closed type (B) - valve position maintenance during gas loss (FL); Pneumatic opening (K) - valve position maintenance during gas loss (FL) |
| Can be equipped with accessories | Positioner, solenoid valve, air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc |
5、 Main component materials of pneumatic flange ball valve
| Part Name | material | |||
|---|---|---|---|---|
| valve body | WCB | 304(CF8) | 316(CF8M) | 316L(CF3M) |
| sphere | 2Cr13+nitriding treatment | 304 | 316 | 316L |
| valve stem | 2Cr13 | 304 | 316 | 316L |
| valve seat seal ring | PTFE (polytetrafluoroethylene), PPL (para polystyrene), metal seal (hard alloy) |
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| filler | V-shaped PTFE PTFE PTFE packing, flexible graphite | |||
6、 Main performance specifications for pneumatic flange ball valves
| Nominal diameter DN (mm) | DN15-300 | |||||
|---|---|---|---|---|---|---|
| Nominal Pressure | PN(MPa) | 1.0 | 1.6 | 2.5 | 4.0 | 6.4 |
| Test pressure | strength test | 1.5 | 2.4 | 3.75 | 6.0 | 9.60 |
| Sealing Test | 1.1 | 1.76 | 2.75 | 4.4 | 7.04 | |
| Low pressure airtightness test | 0.5～0.7 | |||||
| Applicable Medium | Water, oil, steam, nitric acid (temperature ≤ 200 ℃), acetic acid (temperature ≤ 200 ℃) | |||||
7、 Selection of Pneumatic Flange Ball Valve Products
(1) Valve body parameters: nominal diameter, working pressure, process medium, usage scenario, valve body material, and other series of parameters.
(2) Actuator parameters: actuator form, control mode, control signal (4-20mA, 1-5V), action mode (air open, air closed)
Please provide the above technical parameters in as much detail as possible to facilitate our company's operations and technical personnel to accurately select for you. If you have any questions You can call us and we will do our best to provide you with high-quality service!
