Pneumatic valve pneumatic valve by pneumatic actuators and valve components. Pneumatic valve with a circular disc with the valve opening and closing of orange rotating done to enable the operation of pneumatic valves to achieve the main shut-off valve to make use of, or can also be designed to have a regulating valve and regulate the function of segment, butterfly in low voltage high current diameter pipe on the use of more and more. Pneumatic butterfly Category: Stainless steel pneumatic valve, pneumatic butterfly hard seal, soft seal pneumatic valve, pneumatic valve steel. Butterfly butterfly plate installed on the pipe diameter direction. Cylindrical channel in the valve body, disc-shaped disc around the axis of rotation, rotation angle between 0 ° -90 °, rotated to 90 °, the valve is in the fully open state. Butterfly with soft seal and metal seal two kinds of sealed type. Soft sealing butterfly valve seals can be mounted on or attached to the disc periphery. Metal sealed valves are generally longer than the soft seal valve life, but it is difficult to completely seal. Metal seal can adapt to higher operating temperatures, soft seal seal is affected by the temperature limit of the defect. There are common butterfly clip-on butterfly valves and flanged butterfly two kinds. Wafer type butterfly valve with stud connection between two pipe flanges, flanged butterfly valve is a valve with a flange with bolt flanged ends of the valve on the pipe flange. The main advantage of the butterfly valve, simple structure, small size, light weight, low cost, pneumatic butterfly valve of the notable features of the installation at high altitude underground passage, after two five-way solenoid valve control easy to operate, but also adjust the flow medium. Fluid resistance is small, while the large-diameter pneumatic butterfly valve is fully open and effective flow of larger, open and close rapidly effort, pull the disc rotation angle of 90 to complete the opening and closing, due to the shaft side dish wrench media force nearly equal, while the opposite direction of the torque generated, and thus a smaller opening and closing torque, low pressure can achieve a good seal, butterfly valve seal materials NBR, Viton, edible rubber, PTFE lining so good sealing performance, including sealing butterfly advantages of hard and soft valves for heavy metal sheets stacked with a metal seal and a resilient seal, both at low temperatures have excellent sealing properties. How it works: pneumatic valve is a valve with a circular disc with orange make opening and closing rotation, so as to enable the operation of pneumatic valves to achieve the main shut-off valve to make use of, or can also be designed to have a regulating valve and regulate the function of segment, butterfly valve for use on low pressure large diameter pipes more and more. Butterfly simple structure, small size, light weight, only by a few parts. And just rotate 90 ° to quickly open and close, easy to operate, while the electric valve has good flow control characteristics. Butterfly valve in the fully open position, the disc thickness is only resistance medium flows through the valve when the pressure generated by the valve drop is small, it has a better flow control characteristics. Butterfly shells sealed and two metal seal type. Elastic sealing valves, seals can be mounted on the body or attached to the disc periphery. Aluminum pneumatic valve: A valve life long metal sealing valves generally than the elastic seal, but it is difficult to completely seal. Metal seal can adapt to higher operating temperature, flexible seal is restricted by temperature defects. If you require the use of flow control valve as the main choice is the right size and type of valve. Butterfly structure principle is particularly suitable for the production of large diameter valves. Butterfly not only in the oil, gas, chemical, water treatment and other general industrial widely used, but also for the thermal power plant cooling water system features: 1, small, lightweight, easy installation and maintenance, and can be mounted in any position. 2, the structure is simple, compact, low operating torque, 90 ° swing open quickly. 3, the flow characteristics of linear trend, regulated performance. 4, the disc-free connection with the stem pin structure, it is possible to overcome the internal leaks. 5, using the spherical shape of the outer disc, improved sealing performance and extend the life of the valve, with pressure hoist more than 50,000 times remain zero leakage. 6, the seals can be replaced, and achieve bi-directional sealing reliable sealing. 7, the disc can be sprayed coatings based on user requirements, such as nylon or PTFE classes. 8, the valve can be designed into flanged and wafer. 9, drive optional manual, electric or pneumatic. Actuator: A new series GT pneumatic actuator, double acting and single acting (spring return), gear, safety and reliability; AW series of large diameter valves using pneumatic actuator fork-type transmission, reasonable structure, output torque, double acting and single acting pneumatic valve a pneumatic valve gear dual-piston, output torque, small size. 2, the choice of aluminum alloy cylinder material, light weight, beautiful appearance. 3, at the top, bottom installation manual operating mechanism. 4, rack connection opening angle can be adjusted, the rated flow. 5. Optional live butterfly actuator feedback signal indicative and various accessories to automate operations. 6, IS05211 standard provides a convenient connection to install the replacement product. 7, both ends of the adjusting screw allows the sections of standard products at 0 ° and 90 ° has an adjustable range of ± 4 °. Ensure the accuracy of synchronization with the valve. Powder Systems: butterfly for control of solid materials, often in the tank bottom as a tank bottom discharge valve to use, such as cement tank, powder cans, etc., used to discharge and quick disconnect. Because most of the dust material containing large or small particles, the wear on the valve sealing surface is no doubt, improper selection, will greatly reduce the life of the valve, or will soon cause the valve leakage, affect the continued use. Batch weighing system, the entire process is fully automatic batching control PLC, and ingredients car of choice is a discharge valve pneumatic butterfly valve, the media is a very fine powder particles. With a period of time, the valve leakage, resulting in leakage of powder often piles on the table, because this medium is very thin, and a little sticky, though small car is equipped with a vibration motor ingredients, and finally there is a lot of material attached to the tank walls and valve parts, when the valve is closed, the card around the sealing surface, the valve is not completely closed, resulting in the installation of the material after a leak occurs again, over time, also make the sealing surface wear is very powerful, and even emerged trenches . In the PLC program, the motor prolonged vibration, shock them as much as possible all the material before closing the valve; the weighing instrument zero alignment, all materials will be out after the show to zero, this time before the issue of closing the valve by PLC signal; the three double eccentric butterfly valve replacement for elastic hard sealing butterfly valve (also available in the middle rubber seal butterfly, taking into account the occasional large particles of material, rubber seals may not be durable - if there is no fine powder particles can be consider the use of soft sealing butterfly), because the butterfly valve seat sealing surface is a ramp that is face seal, so the material can easily accumulate in the sealing surface, not quickly discharged, while the single eccentric or double eccentric butterfly would not have this * end, even if the sealing surface of a material that, when the valve is closed by the valve are scraped off the plate, thus ensuring a good seal, and the sealing surface durability. Powder pneumatic valve system, there are other factors that need to be considered, such as: You can not let the material directly on top of the valve plate valve rushed into the small car from (this impact will also make the valve can not close tightly), and the material The static pressure also need no more than pneumatic butterfly design bearing pressure, and so on. The difference between the control valve and ordinary manual valve is that it can not be used as an isolated element to look at, but it must be used as part of the automatic control system to consider, control valves use many of the problems, not the selection and configuration issues, but because of lack of user understanding of the control valve control valve failure causes and control system debugging, with the good. As long as the key to understanding the problem, the correct selection of the valve, and in the commissioning phase of the control valve system debugging is good, will be able to greatly reduce the failure rate, so that long-term stable operation of the automatic control system. Assembly: 1. Check before assembling the various parts of the pneumatic valve no missing parts, model is correct, check the valve body no debris inside the solenoid valve and silencer blocking 2, valves and cylinders are placed in the closed state. 3, hit on the cylinder valve (installed parallel or perpendicular to the direction of the body can be), look at whether the screw holes on the positive, there is not much deviation, if a little deviation, the cylinder block rotates a little on it , then the screw fastening. 4. After installation, commissioning of the pneumatic valve (under normal circumstances, the supply pressure is 0.4 ~ 0.6MPa), manually operated solenoid valve opening and closing (after the solenoid coil de-energized before the effective manual operation) must runtime debugging, pneumatic valve open and close observation of the situation. If the valve opening and closing process initially some difficulty, after a normal, you will need to transfer a small cylinder stroke (stroke adjustment screws at both ends of the cylinder while inside emphasize that in the process of commissioning, the time required to adjust the valve to the open position will run then turn off the gas supply and then transferred), until smooth and close the valve opening and closing action without leakage. Also note that the adjustable muffler valve opening and closing speed can be adjusted, but not adjustable too small, or may cause the valve does not operate. 5, was made prior to installation should be kept dry, can not open storage 6, before installing the butterfly valve to check pipes, make sure the pipe without welding slag and other foreign matter 7, butterfly valve manually open and close a moderate resistance, valve actuator torque and torque selected match. 8, butterfly connection flange specifications correct, wafer butterfly valve flange and pipe flange standard match. Recommends using a dedicated valve flange welded flange must not be used. 9, confirm the correct welding flange, after valve installation may not be welded flanges, to avoid burns rubber parts. 10, to be assembled on the pipe flange, and with the butterfly valve into alignment. 11, fitted with all the flange bolts and hand tighten the flange is already confirmed for the butterfly, then carefully open and close the valve to ensure that open and close flexible. 12, the valve is fully open, in accordance with a wrench to tighten the bolts diagonally order without washers, Do not overtighten the bolts to prevent a serious distortion of the valve ring, opening and closing torque is too large. Maintenance: 1, pneumatic valve in use, should be kept clean, drive screw must be lubricated periodically, found fault, you should stop using them immediately identify the cause of the fault is cleared. 2, packing gland bolts should be tightened evenly and should not be pressed into a crooked state, so as not to bruise the stem impede movement or cause leaks. 3, the installation can be directly connected to the valve by means of the pipeline. Under normal circumstances, can be installed in any position on the pipeline, but the need to facilitate maintenance operations, pay attention to media flow shut-off valve should be vertical upward flow below the valve, lift check valve can be installed horizontally. 4, when the pneumatic valve used only for fully open or fully closed, not allowed to do with regulating the flow, in order to avoid sealing surface by erosion, accelerated wear. There are threads in the gate and pour off valve seals, hand wheel rotation to tighten the uppermost position, you can prevent media leaks from the packing department. 5, pneumatic valve open and close when the handwheel Do With lever or other tools to avoid damaging the valve member. Hand wheel clockwise to shut down, otherwise open. 6, before installation, you must carefully check the pressure of the valve logo, path meets the application requirements, eliminating defects caused during transportation and eliminate dirt valve member. 7. Long-term storage of the valve should be checked regularly for processing the exposed surfaces should be kept clean and remove dirt, when the ball should be stored at both ends of blockage and is on both ends of the pneumatic valve, the channel should be blocked and turned off, neatly stored in a ventilated, dry place indoors is prohibited stacked or open storage. Pneumatic valve cement powder warehouse roof ESP, mixing station precipitators important body, and general butterfly butterfly plate installed on the pipe diameter direction. Cylindrical channel in the valve body, disc-shaped disc around the axis of rotation, rotation angle between 0 ° ~ 90 °, rotated to 90 °, the valves are open all license conditions. Butterfly simple structure, small size, light weight, only by a few parts. And just rotate 90 ° to quickly open and close, easy to operate, while the fluid control valve has good features. Butterfly valve in the fully open position, the disc thickness is only resistance medium flows through the valve when the pressure generated by the valve drop is small, it has a better flow control characteristics. Powder butterfly shells sealed and two metal seal type. Elastic sealing valves, seals can be mounted on the body or attached to the disc periphery. With long metal seal valve life in general than the elastic sealing valve, but it is difficult to completely seal. Metal seal can adapt to higher operating temperature, flexible seal is restricted by temperature defects. If you require the use of flow control valve as the main choice is the right size and type of valve. Butterfly structure principle is particularly suitable for the production of large diameter valves. Butterfly not only widely used in the oil, gas, chemical, water treatment and other general industries, but also for the thermal power plant cooling water system. There are common butterfly clip-on butterfly valves and flanged butterfly two kinds. Wafer type butterfly valve with stud connection between two pipe flanges, flanged butterfly valve is a valve with a flange with bolt flanged ends of the valve on the pipe flange.