The ZSHO pneumatic cut-off ball valve is composed of an imported pneumatic actuator and high-quality ball valve, classifying as a pneumatic on-off ball valve. It boasts excellent sealing performance, high flow capacity, simple structure, long service life, and ease of maintenance. The actuator used with the pneumatic cut-off ball valve features a simple, compact design, outstanding performance, and a large output torque. The pneumatic on-off ball valve is also equipped with a stroke limit switch, solenoid valve, pressure reducing valve, and a 0.4-0.7MPa air source for switching operations, while also providing two pairs of passive contact signals to indicate the valve's open or closed status. The actuators are available in single-acting and double-acting models. The advantage of the single-acting type is that in case of a power source failure, the pneumatic on-off ball valve will automatically switch to the open or closed position as required by the control system. The pneumatic cut-off ball valve is widely used in industries such as chemicals, petrochemicals, light industry, textiles, electricity, food, refrigeration, aviation, aerospace, and papermaking. It is capable of controlling gases, liquids, and steam media, as well as suitable for controlling wastewater and fibrous substances.
Pneumatic Cut-off Ball Valve - Product Features
(1) Fluid resistance is low; 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 of the valve rod.
(3) The valve seat has excellent sealing performance, featuring a sealing ring made of materials like polytetrafluoroethylene (PTFE) for elasticity. The structure is easy to seal, and the sealing capability of the ball valve 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 or down, the packing seal of the valve stem is less prone to damage, and its sealing capability increases with the increase in the pressure of the medium.
(5) Due to the excellent self-lubricating properties of materials like polytetrafluoroethylene, the friction loss with spheres is minimal, resulting in a long service life for ball valves.
Pneumatic Cut-off Ball Valve - Technical Parameters
| Nominal Bore Diameter (mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flow coefficient Kv | 21 | 38 | 72 | 112 | 170 | 273 | 384 | 512 | 940 | 1452 | 2222 | 3589 | 5128 | 7359 |
| Nominal Pressure (MPa) | PN1.6、2.5、4.0、6.4MPa | |||||||||||||
| Leakage rate | Soft seal: Zero leakage; hard seal: ≤ 10^-5 of rated flow | |||||||||||||
| Valve body style | Two-piece valve body (floating ball) | Two-piece valve body (fixed ball) | ||||||||||||
| Valve core style | O-ring ball valve core | |||||||||||||
| Sealed packing material | PTFE (Polytetrafluoroethylene), metal graphite wrapped gaskets | |||||||||||||
| Connection Type | Flanges, Welding, Threaded | |||||||||||||
| Flow characteristics | Approximate quick release feature | |||||||||||||
| Adjustable Range | DN15-65 | DN80-300 | ||||||||||||
| 250:1 | 350:1 | |||||||||||||
| Suitable Temperature | Sealed face | |||||||||||||
| PTFE ≤ 150°C, RTFE ≤ 180°C, PPL ≤ 300°C, Rigid Seal ≤ 450°C | ||||||||||||||
Pneumatic Cut-off Ball Valve Actuator Parameters
| Actuator Model | GT, AT, AR, AW Series Double-acting and Single-acting Pneumatic Actuators |
|---|---|
| Gas 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 (B) – valve position open (FO) when gas is lost; Gas open (K) – valve position closed (FC) when gas is lost Double-acting actuator: Gas-closed type (B) -- valve position held (FL) during air loss; Gas-open type (K) -- valve position held (FL) during air loss |
| Available accessories | Locators, solenoid valves, air filter regulators, hold-open valves, limit switches, valve position transmitters, handwheels, etc. |
Pneumatic Cut-off Ball Valve - Parts Material
| 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-phenylene), metal seals (hard alloy) | |||
| Filling Material | V-shaped PTFE four-fluorine filler, flexible graphite | |||
Pneumatic Cutting Ball Valve - Performance Specifications
| Nominal Pipe Size (mm) | DN15-300 | ||||
|---|---|---|---|---|---|
| Nominal Pressure | PN(MPa) | 1.0 | 1.6 | 2.5 | 4.0 |
| Test Pressure | Tensile Test | 1.5 | 2.4 | 3.75 | 6.0 |
| Seal Test | 1.1 | 1.76 | 2.75 | 4.4 | |
| Low-pressure Sealing Test 0.5～0.7 | |||||
| Applicable Medium | Water, oil, steam, nitric acid (temperature ≤ 200°C), acetic acid (temperature ≤ 200°C) | ||||
Pneumatic Cut-off Ball Valve - Product Selection
(1) Valve Body Parameters: Nominal Bore Size, 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 (Pneumatic - Open, Pneumatic - Close)
Please provide as much detail as possible regarding the above technical specifications to facilitate our production and technical staff in accurately selecting the right product for you. Should you have any questions, feel free to call us, and we will do our utmost to provide you with excellent service!
