Products
Pneumatic diaphragm fluorine-lined flow control valve
The pneumatic control valve is composed of an actuator and an adjustment mechanism. The actuator is the thrust component of the adjustment valve. It generates a corresponding thrust according to the pressure of the control signal to push the adjustment mechanism into action. The valve body is the regulating component of the pneumatic regulating valve. It directly contacts the regulating medium to regulate the flow, pressure, temperature and other process parameters of the fluid. The pneumatic control valve has the characteristics of simple control, fast response, and intrinsically safe, without additional explosion-proof measures. Pneumatic control valve is one of the industrial process control instruments widely used in petroleum, chemical, electric power, metallurgy and other industrial enterprises.
Model: pneumatic control valve
Size Range: 3/4''~8'
Pressure Range: PN16~PN100
Material: WCB, HT200、ZG25I、ZG1Cr18Ni9、ZGOCr17Ni12Mo2、1.25Cr0.5Mo、5.0Cr0.5Mo、 SCPH21、Ti
Lining: PTFE
Description
The pneumatic control valve is to use compressed gas as the power source, the cylinder as the actuator, and with the help of a valve positioner, converter, solenoid valve, retaining valve, gas tank, gas filter, and other accessories to drive the valve, realize the switch value or proportional adjustment, receive the control signal of the industrial automation control system to complete the regulation of pipeline medium: flow, pressure, temperature, liquid level, etc Various process parameters. The characteristics of a pneumatic control valve are simple to control, rapid response, and intrinsic safety, no need to take additional explosion-proof measures.
The main advantages of the pneumatic control valve are that the opening and closing speed of the pneumatic control valve is easy to adjust, the structure is simple, and it is easy to maintain. Due to the buffer characteristics of the gas itself during the operation, it is not easy to be damaged due to jamming. It is more reliable than the electric valve in some explosion-proof situations
Pneumatic Control Valve Types:
Pneumatic Control Valve Technical Parameters:
| Type | Single-seat, double seat, sleeve | Nominal diameter | DN20-DN200 |
| Nominal pressure | PN16, PN25, PN40, PN63, PN100 | Connection | Flange, thread, weld (Or other customer specified) |
| Structure | Standard type (-20℃ ~+200℃ ) | Material | WCB, 304, 316, 316L |
| Cooling type | (-40~450℃ ) | Low-temperature type | (-60℃ ~-196℃ ) |
| Packing | V type PTFE, flexible graphite | Adjustable range | 50:1 |
| Sealing surface | PN16 convex surface, PN40, PN63, PN100 |
| Basic error | Less than full stroke ± 1% (With locator) Less than full |
| Accessories | locator, air filter pressure-relief valve, hand wheel device, limit switch, solenoid valve, lock up valve, and others. |
| Leakage class | Metal seal: Less than 0.01 (ANSI B16.104-1976IV) |
| Soft seal: Less than 0.00001% |
Valve components: Single-seat plunger core type; 304, 316+ SLT core seat with equal percentage, linear, quick-opening low characteristics.
Valve Actuator: Multi-spring diaphragm actuator in direct action & reverse action. NBR rubber reinforcing polyester fabric diaphragm material. Spring range 20~100KPa, 40~200KPa, 80~240KPa. Supply pressure from 0.4MPa to 0.5MPa
Action type: Air to close FO (With direct action actuator), when the air supply failure, actuator spring open the valve; Air to open FC (With reverse action actuator) When the air supply failure, actuator spring closes the valve. Linear, equal percentage, quick opening
Pneumatic Control Valve Dimensions:
Model: pneumatic control valve
Size Range: 3/4''~8'
Pressure Range: PN16~PN100
Material: WCB, HT200、ZG25I、ZG1Cr18Ni9、ZGOCr17Ni12Mo2、1.25Cr0.5Mo、5.0Cr0.5Mo、 SCPH21、Ti
Lining: PTFE
