90° rotary ball valves, also known as "pneumatic O-type regulating ball valves." These pneumatic regulating ball valves utilize intelligent control and positioning, compatible with electrical valve positioners, and can be controlled by inputting a 4-20mADC signal and a 0.4-0.7MPa air source. They enable the adjustment of parameters such as pressure, flow rate, temperature, and liquid level. Pneumatic regulating ball valves are powered by compressed air, with the valve stem rotating the valve core 90° within the valve body to achieve full open to full close action. They are categorized by their sealing performance into metal-seated and soft-seated types. These valves offer compact structure, small size, reliable operation, good sealing, easy maintenance, convenient installation, and strong adaptability. Pneumatic regulating ball valves are particularly suitable for mediums that are thick, contain particles, or have fibrous properties. They are widely used in automatic control systems in industries such as petroleum, chemicals, educational equipment, light industry, high-pressure equipment, and papermaking, for remote centralized control or on-site control.
Pneumatic regulating ball valve - Product Features
1. Fluid resistance is low, and ball valves are a type of valve with even lower fluid resistance. Even constricted ball valves have relatively low fluid resistance.
2. Thrust bearings reduce the friction torque on the valve rod, allowing for long-term smooth and flexible operation.
3. The valve seat has excellent sealing performance, utilizing sealing rings made from materials like Teflon for elasticity, which ensures easy sealing. Moreover, the ball valve's sealing capability increases with the rise in medium pressure.
4. The valve stem seal is reliable. Since the valve stem only rotates and does not move up and down, the stuffing box seal of the valve stem is less prone to damage, and its sealing capability increases with the increase of the medium's pressure.
5. Due to the excellent self-lubricating properties of materials like polytetrafluoroethylene, the friction loss with spheres is minimal, thereby extending the service life of ball valves.
Pneumatic调节Ball Valve Technical Parameters and Performance
| Nominal Bore 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 | |||||||||||
| Valve body style | Two-piece cast ball valve | |||||||||||
| Connection Type | Flanged, Welded, Clamp, Threaded | |||||||||||
| Valve core style | O-ring ball valve core | |||||||||||
| Sealed packing material | V-shaped polytetrafluoroethylene packing, flexible graphite packing, etc. | |||||||||||
| Flow characteristics | Approximate quick-release type | |||||||||||
| Motion Range | 0～90° | |||||||||||
| Leakage Quantity Q | In accordance with GB/T4213-92, less than rated KV 0.01% | |||||||||||
| Basic Error | With locator: Less than ±2% of full travel | |||||||||||
| Return difference | With locator: Less than 2% of full travel | |||||||||||
Pneumatic调节球阀 Actuator Parameters
| Actuator Model | GT, AT, AR, AW Series Double-acting and Single-acting Pneumatic Actuators |
|---|---|
| Supply Pressure | 0.4～0.7MPa |
| Gas Source Interface | G1/4"、G1/8"、G3/8"、G1/2" |
| Ambient Temperature | -30～+70℃ |
| Functionality | Single-acting actuator: Gas-closed type (B) - valve opens (FO) when gas is lost; Gas-open type (K) - valve closes (FC) when gas is lost Double-acting actuator: Air-closed type (B) - Valve position maintained (FL) when air is lost; Air-open type (K) - Valve position maintained (FL) when air is lost. |
| Available accessories | Locators, solenoid valves, air filter regulators, hold-open valves, stroke switches, valve position transmitters, handwheels, etc. |
Pneumatic regulating ball valve - Parts Material
| Part Name | Materials | |||
|---|---|---|---|---|
| Valve body | WCB | 304(CF8) | 316(CF8M) | 316L(CF3M) |
| Sphere | 2Cr13 + Nitriding treatment | 304 | 316 | 316L |
| Valve Stem | 2Cr13 | 304 | 316 | 316L |
| Valve seat sealing ring | PTFE (polytetrafluoroethylene), PPL (para-phenylene), metal seals (hard alloy) | |||
| Filling Material | V-shaped PTFE four-fluorine filling, flexible graphite | |||
Pneumatic regulating ball valve - Performance specifications
| Test Standards | Nominal Pressure (Mpa) | Pressure Class | JIS(Mpa) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Test Pressure (Mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 150 | 300 | 600 | 10K | 20K |
| Tensile Test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 3.1 | 7.8 | 15.3 | 2.4 | 3.8 |
| Seal Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 2.2 | 5.6 | 11.2 | 1.5 | 2.8 |
| Airtightness Test | 0.5～0.7 | |||||||||
Pneumatic regulating ball valve - Application Standards
| Design and Manufacturing | GB12237-89、API608、API 6D、JPI 7S-48、BS5351、DIN3357 |
|---|---|
| Flange Dimensions | JB/T74～90（JB74～90）、GB9112～9131、HGJ44～76、SH3406、ANSI B16.5、JIS B2212～2214 |
| Structure Length | GB12221-89、ANSI B16.10、JIS B2002、NF E29-305、DIN3202 |
| Inspection and Testing | JB/T9113.1、API 598 |
Pneumatic regulating ball valve - Product Selection
(1) Valve Body Parameters: Nominal Diameter, Working Pressure, Process Medium, Application, Valve Body Material, and a series of other parameters.
(2) Actuator Parameters: Actuator Type, Control Method, Control Signal (4-20mA, 1-5V), Operation Mode (Air-Open, Air-Close)
Please provide as detailed technical specifications as possible, which will facilitate our production and technical staff in accurately selecting the right products for you. Should you have any questions, feel free to call us, and we will do our utmost to provide you with excellent service!
