Compact pneumatic thin film steam temperature regulating valve

1、 ZJHP-16C compact sizePneumatic thin film steam temperature regulating valveIt is the execution unit of the automation control system in the industrial production process. It changes the opening degree of the valve according to the signal of the regulating instrument, thereby achieving the adjustment of parameters such as pressure, temperature, flow rate, and liquid level. The ZJHP-16K circulating water flow and temperature control pneumatic diaphragm regulating valve has the advantages of small size, simple structure, easy use, fire prevention, explosion prevention, and convenient maintenance. Therefore, it is widely used in automatic regulation and remote control systems of industrial production processes such as chemical, petroleum, metallurgy, power, and light industry. Equipped with electrical valve positioning or pneumatic valve positioning devices, it can achieve automatic regulation and control of process pipeline fluid media. It is widely used to control process parameters such as pressure, flow rate, temperature, liquid level, etc. of gas, liquid, steam and other media to maintain them at given values. It is a universal regulating valve product that complies with IEC standards. Main components and materials of the product: Valve body and cover: HT200, ZG230-450, ZG1Cr18Ni9Ti<>Valve core and seat: 1Cr18Ni9Ti, Stellite alloy welding<>Soft seal valve core: Reinforced polytetrafluoroethylene<>Packing: Polytetrafluoroethylene, flexible graphite<>Bellows: 1Cr18N19Ti<>Gaskets: Rubber asbestos board, 10, 1Cr18Ni9Ti, asbestos wrapped gasket<>Membrane cover: A3<>Bellows membrane: Rubber clip reinforced polyester fabric<>Spring: 60SIMN<>Valve stem and push rod: 2Cr13, 1Cr18Ni9Ti<>Lining: 2Cr13ZXP Standard working temperature -20~+200 * C, leakage rate Level IV; ZXPM top guide type, high pressure difference anti erosion, more stable fluid; The ZXPS heat dissipating valve cover is equipped with heat sinks, which can be used in situations where the medium temperature is -60~+250 * C; ZXPW bellows sealing type forms a seal for the moving valve stem, blocking fluid leakage; The ZXPD low-temperature type adopts a long neck valve cover and corrugated tube sealing structure, which can be used in deep cold applications of -40~+150 ° C; The ZXPQ adjustable cut-off type soft seal structure valve core meets the V * * * leakage standard (microbubble level), and the valve core and seat are welded with Si Ti Lai alloy, suitable for high temperature, deep cold and other harsh working conditions. ZXPV type bellows sealed regulating valve seals the moving valve stem to prevent fluid leakage. The ZXPJ type regulating valve is equipped with an insulation jacket, which is used in situations where the fluid is prone to crystallization and solidification after cooling, causing blockage. The pneumatic diaphragm regulating valve consists of a pneumatic diaphragm multi spring actuator and a compact single seat valve. It has reliable operational performance, * * * flow characteristics, large adjustable range, small valve seat leakage, stable operation, multi spring actuator with low height, light weight, easy equipment, compact valve body structure, and smooth flow channel. Has a large flow coefficient. Suitable for situations with strict requirements for leakage, low pressure difference before and after the valve, and with a fixed viscosity and a small amount of fiber content. 1. Top guided single seat regulating valve, compact structure, few components, easy to maintain. 2. The metal valve core is suitable for various working environments and meets the IV level leakage standard. The ZXPQ soft seal structure valve core meets the V * * * leakage standard. 3. The valve body is designed according to the principles of fluid mechanics as a low flow resistance channel with equal cross-section, increasing the rated flow coefficient by 30%. 4. The adjustable range is large, with an inherent adjustable ratio of 50. 5. The actuator adopts a multi spring structure, reducing height by 30% and weight by 30%. 6. ZJHPV type bellows sealed regulating valve forms a * seal on the moving valve stem, blocking fluid leakage. 7. The ZJHPJ type regulating valve is equipped with an insulation jacket, which is used in situations where the fluid is prone to crystallization and solidification after cooling, causing blockage.

2、 ZJHP-16C compact sizePneumatic thin film steam temperature regulating valveThe gas shut-off valve consists of a positive acting actuator and a valve. When the input signal pressure changes from the lower limit value to When the upper limit is reached, the valve will be fully opened and fully closed. 2. The pneumatic valve consists of a reaction actuator and a valve. When the input signal pressure changes from the lower limit value to the upper limit value, the valve switches from fully closed to fully open. Valve Structure and Working Principle 1. Structure: The ZJHP-16K circulating water flow temperature control pneumatic diaphragm regulating valve consists of a pneumatic diaphragm actuator and a regulating valve. The new series of pneumatic actuators adopt a multi spring structure. Therefore, the height of the actuator has been significantly reduced, and the weight has also been correspondingly reduced. The regulating valve body is a low flow resistance valve body designed according to fluid dynamics principles, and the rated flow coefficient has increased by about 30%. The pneumatic diaphragm regulating valve has two modes of operation: pneumatic opening and pneumatic closing. The selection of gas on and gas off is mainly based on production safety, considering that when the input signal is interrupted, the valve is in a switch state that is safe for the system. Working principle: The action of the pneumatic diaphragm regulating valve is controlled by the signal pressure from the regulator, which is input into the air chamber of the pneumatic diaphragm actuator to generate thrust. The valve core is pushed through the connecting rod to produce corresponding displacement - the so-called stroke. The change in the position of the valve core changes the flow cross-sectional area of the valve, thereby achieving the purpose of regulating the flow rate of the medium. Pneumatic thin film regulating valve actuator is commonly used, and the actuators mainly include pneumatic actuators, electric actuators, hydraulic actuators, and manual actuators. Pneumatic thin film actuators are widely used due to their reliability and simplicity in structure. Pneumatic piston actuators provide high valve stem output force for the required operating conditions. The improved version of pneumatic diaphragm and pneumatic piston actuator may be connected and used with angular stroke control valve. Electric, electro-hydraulic, and gas-liquid actuators are more complex and expensive than pneumatic actuators. In situations where there is no gas supply available, low ambient temperatures may freeze condensed water in the gas supply pipeline, or where particularly high thrust is typically required, they have * * properties. The main advantages of pneumatic control valves and pneumatic actuators are that they receive continuous pneumatic signals and output linear displacement (after adding an electric/pneumatic conversion device, they can also receive continuous electrical signals). Some are equipped with rocker arms and can output angular displacement. It has positive and negative functions. The movement speed is high, but the speed slows down when the load increases. The output force is related to the operating pressure. High reliability, but valve i cannot be maintained after the gas source is interrupted (it can be maintained after adding a protective valve). It is inconvenient to implement segmented control and program control. Easy maintenance and good adaptability to the environment. The output power is relatively high. It has explosion-proof function. Advantages of electric control valves: Valve electric actuators are mainly used in power plants or nuclear power plants because a smooth, stable, and slow process is required in high-pressure water systems. The main advantages of electric actuators are high stability and user applicable constant thrust. The thrust generated by large actuators can reach up to 25000 kgf, and only hydraulic actuators can achieve such a large thrust. However, the cost of hydraulic actuators is much higher than that of electric actuators. The anti deviation ability of electric actuators is very good, and the output thrust or torque is basically constant, which can effectively overcome the unbalanced force of the medium and achieve accurate control of process parameters. Therefore, the control accuracy is higher than that of pneumatic actuators. If equipped with a servo amplifier, it is easy to achieve the exchange of positive and negative effects, and it is also easy to set the position status of the cut-off signal valve (hold/fully open/fully closed). In case of a fault, the valve will remain in its original position, which cannot be achieved by pneumatic actuators. Pneumatic actuators must rely on a combination protection system to achieve position protection.