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Control valve and isolation valve difference
What is the control valve ZJHP Pneumatic single-seat control valve ZJHP Pneumatic single-seat control valve Small, light body, high performance, large capacity, is a new generation of common control valve products in line with IEC standards. It is suitable for general fluid medium and process conditions of production process control system. ZMAN (P) (M) Pneumatic Diaphragm Control Valve ZMAN (P) (M) Pneumatic diaphragm control valve is a commonly used pneumatic actuator with balanced spool structure, small axial unbalance force and good stability , The stem should not produce vibration, allowing large pressure, low noise, greater flow capacity, adaptability and flow in the large pressure difference, the leakage is less demanding occasions ZJHP, ZJHM fine pneumatic film through a single seat Sleeve control valve This series of products have a standard type, regulation cut off, bellows sealed, jacket insulation and other varieties. Nominal product pressure rating PN16, 40, 64; nominal diameter range DN20 ~ 300. Applicable liquid temperature from -200 ℃ to + 560 ℃ range of a variety of grades. Leakage standards are Ⅳ or Ⅵ level, the flow characteristics of linear or equal percentage. ZMABP, ZMABN-type pneumatic film direct two-seater control valve This series of products are standard, bellows sealed, jacket insulation and other varieties. Product nominal pressure rating PN16, 40, 64; body diameter range DN25 ~ 400. Applicable fluid temperature -250 ℃ ~ + 560 ℃ range of a variety of grades. Leakage standards for grade Ⅲ and Ⅳ. Flow characteristics are linear or percentage. Variety of varieties ZJHQ, ZJHX-type aerodynamic film three-way joint diversion valve This series of products have three links and three-way diversion two. Nominal pressure PN16, 40, 64; nominal diameter range DN25-300. Suitable fluid temperature from -60 ℃ to +450 ℃. Leakage standards for grade IV. Flow characteristics of a straight line, two kinds of parabola. ZXS new series of pneumatic diaphragm angle single seat control valve ZXS new series of pneumatic diaphragm angle single seat adjustment valve with top guide structure, with multi-spring actuator, with a compact, light weight, action sensitive, valve capacity, fluid passage S streamlined, pressure loss loss, valve capacity, flow characteristics of accurate, easy disassembly and so on. ZXX (Q) -type pneumatic membrane tee high-temperature regulating valve ZXX (Q) -type pneumatic membrane tee high temperature regulating valve with a tube-shaped thin-walled window-shaped spool structure, different from the plunger-type spool guide. Equipped with multi-spring actuator, with a compact, light weight, small size, easy disassembly and so on. ZXN pneumatic film direct two-seat control valve ZXN new series of pneumatic film two-seat control valve with double guide structure, with multi-spring actuator, with a compact, light weight, action sensitive, valve capacity, accurate flow characteristics, disassembly Convenient and so on. ZXM Pneumatic Film Thru-Sleeve Control Valve The new ZXM Pneumatic Thimble Sleeve Control Valve is a pressure-balancing regulator. With multi-spring actuator, the overall body compact, light weight, good stability. Fluid flow was S streamlined, pressure drop loss is small, allowing large pressure, noise, flow capacity. ZXP pneumatic film through the single-seat control valve ZXP series of new series of pneumatic film through the single-seat control valve top guide structure, with multi-spring actuator. The utility model has the advantages of compact structure, light weight, sensitive action, S-shaped fluid passage, small pressure drop loss, large valve capacity, precise flow characteristics and convenient disassembly and assembly. What is the isolation valve? Isolation valve in the vacuum system role: 1. Switch gas, when the valve 1 and valve 4 is closed, the valve 2 is open, the mechanical vacuum pump III vacuum container I, the air flow through the pre-vacuum exhaust line ; When the valve 2 is closed and the valve 4 is opened, the mechanical pump can pump the diffusion pump alone. When the valve 1 and the valve 4 are opened at the same time, the diffusion pump and the mechanical pump can work at the same time to evacuate the container, Diffusion pump. Visible, the role of the valve in this operation is to switch the gas path, changing the flow of air through the route. 2. Control the size of the air flow, adjust the degree of vacuum In Figure 1, the control valve 1 valve cover opening angle, you can adjust the size of the air flow through the pipeline; close the valve 2 and 4, through the purge valve 3 to the mechanical pump Ⅲ entrance into the atmosphere; through the purge valve 5 can adjust the degree of vacuum inside the container. 3. Quantitative inflation, in the glass valve plunger has a certain volume of holes, when the hole turns to the right and high pressure gas cylinders connected, the hole can be filled with high-pressure gas; when it turns to the left and the vacuum container is connected , Put the volume of high-pressure gas into the container to go, so it played a quantitative inflatable role. A wide range of vacuum valves, usually according to the function of the valve, structure type, driving method, material and purpose of classification. This article Keywords: control valve isolation valve