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11-13

Adjustment method of regulating valve

The standard products produced by the regulating valve generally adjust the spring within the range of the standard assembly, that is, the starting pressure Pi of the spring, and the deformation of the spring in the full stroke range Pr, and if the regulator is used to control the full stroke, there is no output force. Therefore, the regulating valve should be adjusted in the equipment to satisfy the process requirements. Some use factory, because of the lack of adjustment of common sense, improper adjustment, so that the valve can not be closed, can not open, so introduce the adjustment method.

Adjustment method of regulating valve

11-03

What is the manufacturer's introduction of regulating valve

In the automatic control of modern factories, regulating valves play a very important role, and the consumption of these factories depends on the correct distribution and control of the active medium. These manipulations, whether energy communication, pressure drop or simple container feeding, require some final control element to complete. The regulating valve acts as a variable resistance in the pipeline.

10-28

Installation principle of electric control valve

The equipment orientation, height and import and export direction of the valve must meet the requirements of the port direction planning, and the connection should be firm and tight. The end of the valve may be coupled to the pipeline in various ways. One of the first connection method is thread, flange and welding connection. When flange connection, if the temperature exceeds 350 ℃, due to the creep of bolts, flanges and gaskets, high temperature resistant bolt materials should be selected.

Installation principle of electric control valve

03-08

Check Valve Factory-Weituo Builds Brand with Heart

The company's products mainly adopt standards such as Chinese GB, JB, American ANSI, API, AWWA, German DIN, British BS, Japanese JIS, Russian Г OST, French NF, etc. The materials mainly include HT200, HT250, QT400, QT450, WCA, WCB, WCC, CF3, CF8, CF3M, CF8M, 1CR5MO, LCB, etc, the products should be produced in 12 categories, including gate valves, globe valves, ball valves, butterfly valves, check valves, diaphragm valves, pressure reducing valves, plug valves and traps, with more than 200 series and more than 4000 specifications, with an annual production capacity of more than 80000 tons. It is widely used in various fields of national economy such as petroleum, petrochemical, chemical industry, electric power, metallurgy, water conservancy, medicine, municipal construction, water supply and drainage, etc.

03-08

Weituo is careful and thoughtful-Hubei trench gate valve specifications

Wuhan Weituo groove gate valve specifications, careful and thoughtful, using fully automated production lines of valve manufacturers. Weituo has established long-term and stable cooperative relations with international well-known enterprises such as Kerry in the United States, Daiwa in Japan, Dahua in South Korea, TGK in South Korea, ADL in Russia, FAF in Turkey, and its products are exported to Germany, Britain, France, Italy, Brazil, Poland, Europe, America, Central Asia, West Asia and more than 30 countries and regions, which are deeply trusted and praised by customers.

Weituo is careful and thoughtful-Hubei trench gate valve specifications

01-21

Manufacturers take you to understand the advantages of bellows globe valve

WATO Wuhan Weituo Fluid Equipment Control Equipment Co., Ltd Bellows globe valve is a kind of globe valve, globe valve is forced to seal valve, so when the valve is closed, must apply pressure to the disc, in order to force the sealing surface does not leak. The opening and closing parts of the cut-off valve is a plug-shaped disc, which is sealed with a plane or sea cone, and the disc moves linearly along the center line of the valve seat. In the production and sales of bellows valve materials are carbon steel, stainless steel, etc., the operation mode can be manual, bevel gear, electric, pneumatic and so on. Bellows seal globe valve with bellows seal design, completely eliminate the common valve stem packing aging and easy to leak shortcomings, not only improve the use of energy efficiency, increase the safety of production equipment, reduce maintenance costs and frequent maintenance, but also provides a clean and safe working environment. bellows globe valve advantages: 1. Double seal design (bellows packing) If the bellows fails, the valve stem packing will also be avoided; 2, external leakage, and in line with international sealing standards; 3, no fluid loss, reduce energy loss, improve the safety of plant equipment; 4, long service life, reduce the number of maintenance, reduce operating costs. 5. The durable bellows seal design ensures zero leakage of the valve stem and provides maintenance-free conditions.

09-05

Choose flange gate valve to understand its advantages and disadvantages

WATO Wuhan Weituo Fluid Equipment Control Equipment Co., Ltd The opening and closing parts of the gate valve are the gate plate. The movement direction of the gate plate is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. Gate valves also have a good variety of classification. According to the material can be classified as cast iron gate valve, cast steel gate valve, stainless steel gate valve and so on. According to the transmission mode, it can be divided into manual gate valve, electric gate valve, pneumatic gate valve, etc. According to the connection mode, it can be divided into flange gate valve, welded gate valve, etc. Flange gate valve has the following advantages: 1. The fluid resistance is small, and the sealing surface is brushed and eroded by the medium. 2, open and close more labor-saving. 3. The flow direction of the medium is not restricted, does not disturb the flow, does not reduce the pressure. 4. Simple shape, short structure length, good manufacturing process and wide application range. The disadvantages of flange gate valve are as follows: 1, the sealing surface is easy to cause erosion and abrasion, maintenance is difficult. 2. The external dimensions are large, opening requires a certain space, and the opening and closing time is long. 3, the structure is more complex. The installation and maintenance of flange gate valve should pay attention to the following matters: 1. Handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited. 2. The double gate valve should be installed vertically (that is, the valve stem is in the vertical position and the handwheel is at the top). 3. The gate valve with bypass valve should be opened before opening the bypass valve (to balance the pressure difference between the inlet and outlet and reduce the opening force). 4. The gate valve with transmission mechanism shall be installed according to the provisions of the product instruction manual. 5. If the valve is frequently used, lubricate it at least once a month.

07-15

Butterfly valve daily use and maintenance introduction

WATO Wuhan Weituo Fluid Equipment Control Equipment Co., Ltd Butterfly valve installation notes Installation environment: butterfly valve can be used both indoors and outdoors, but in corrosive media and easy to rust, the corresponding material combination should be used. For special working conditions, please consult Zhongzhi valve. Plant location: It must be installed in a place that can be operated safely and is easy to maintain, inspect and repair. Ambient environment: temperature -20 ℃ ~ +70 ℃, humidity below 90% RH. Before installation, check whether the valve meets the working conditions according to the nameplate mark on the valve. Note: The butterfly valve does not have the ability to resist high pressure difference, do not let the butterfly valve open or continuous flow under high pressure difference. Before installation, please remove the dirt and oxide scale in the pipeline. When installing, please note that the flow direction of the medium should be consistent with the flow arrow marked on the valve body. Align the front and rear piping centers, make the flange interfaces parallel, and lock the screws evenly. Pay attention to the pneumatic butterfly valve without excessive piping stress on the cylinder control valve. According to the size and weight of the cylinder control valve, give proper support and fixation on the pipe or the body. Maintenance Considerations Daily inspection: check for leakage, abnormal noise, vibration, etc. Regular inspection: valves and other system components should be regularly checked for leakage, rust and Caton, and its maintenance, cleaning, dust removal, residual stains, etc. Disassembly inspection: the valve should be periodically disassembled and overhauled. During disassembly and overhaul, the parts should be washed again, foreign matter, stains and rust spots should be removed, damaged or severely worn gaskets and fillers should be replaced, and the sealing surface should be corrected. After overhaul, the valve should be subjected to hydraulic test again, and can be reused only after passing the test. If there is fluid leakage during the inspection of pneumatic butterfly valve, please do not touch or approach the cylinder control valve with your hands until the safety is confirmed.

04-16

Manufacturers take you to correctly understand the electric valve

WATO Wuhan Weituo Fluid Equipment Control Equipment Co., Ltd Electric valves are simply electric actuators. Control the valve to open and close the valve. It can be divided into two parts, the upper half of the electric actuator, the lower half of the valve. Electric valve device is to achieve valve program control, automatic control and remote control of the indispensable equipment, the movement process can be controlled by the size of the stroke, torque or axial thrust. Since the working characteristics and utilization of the electric valve device depend on the type of valve, the working specification of the device and the position of the valve on the pipeline or equipment, the correct selection of the electric valve device is essential to prevent overload (working torque is higher than the control torque). Generally, the correct selection of electric valve device is based on the following: Operating torque Operating torque is the main parameter of selecting electric valve device, and the output torque of electric device should be 1.2~1.5 times of the large torque of valve operation. There are two main structures for operating the thrust electric valve device: one is not configured with a thrust plate and directly output torque; the other is configured with a thrust plate, and the output torque is converted to output thrust through the stem nut in the thrust plate. The number of turns of the output shaft The number of turns of the output shaft of the electric valve device is related to the nominal diameter of the valve, the pitch of the valve stem and the number of threads. It shall be calculated according to M = H/ZS (M is the total number of turns that the electric device should meet, H is the opening height of the valve, S is the pitch of the valve stem drive thread, and Z is the number of valve stem threads). If the opening and closing speed of the output speed valve is too fast, it is easy to produce water hammer. Therefore, the appropriate opening and closing speed should be selected according to different conditions of use. The electric valve device has its special requirements, that is, it must be able to limit the torque or axial force. Usually the electric valve device uses a torque limiting coupling. When the specifications of the electric device are determined, its control torque is also determined. Generally, the motor will not be overloaded when it runs for a predetermined period of time. However, overload may result if: First, the power supply voltage is low, the required torque is not obtained, so that the motor stops rotating; Second, the wrong setting of the torque limiting mechanism, so that it is greater than the stop torque, resulting in continuous excessive torque, so that the motor to stop rotating; Three is the intermittent use, the heat generated by the accumulation, more than the allowable temperature appreciation of the motor; Four is due to some reason the torque limit mechanism circuit failure, so that the torque is too large; Five is the use of ambient temperature is too high, the relative heat capacity of the motor decreased.

12-17

In-depth understanding of the structural characteristics of the lower plate gate valve

WATO Wuhan Weituo Fluid Equipment Control Equipment Co., Ltd Flat gate valve is a member of the gate valve family, the same as the wedge gate valve; its main function is to control the on-off of the pipeline, rather than regulating the flow of media in the pipeline. The advantages of flat gate valve: small fluid resistance, opening and closing labor saving, short structure length, the pipeline medium flow is not restricted. Flat gate valve is suitable for Class150 ~ 900/PN1.0 ~ 16.0MPa, working temperature -29~121 ℃ oil, natural gas, water, oil and other pipelines, used to cut off or connect the medium in the pipeline. Flat gate valve product structure features: 1. The seat of the flat gate valve adopts O-ring seal and floating seat structure with preload force, so that the import and export of the valve are sealed in both directions. And the opening and closing torque of the structure is only that of ordinary valves, which can easily open and close the valve. 2. The valve seat of the flat gate valve adopts inlaid or surfacing stainless steel (or cobalt-chromium-tungsten alloy) on the sealing surface, which has double sealing of metal and metal-to-metal, and the sealing surface can remove the dirt of the gate at the same time. 3, metal seal valve, the outside of the valve body with grease injection structure, grease through the grease injection device, valve seat into the valve sealing surface, so that the valve to achieve zero leakage. 4, with a diversion hole valve gate, whether it is fully open or fully closed always coincide with the sealing surface, the sealing surface is protected from direct erosion of the medium, thereby prolonging the service life. 5. When the flat gate valve is fully opened, the channel is smooth and straight, the flow resistance coefficient is extremely small, there is no pressure loss, and the pipeline can be cleaned through the hair ball. 6. The flat gate valve adopts a packing structure with self-sealing ability, which does not need frequent adjustment, is extremely light to open and close, and has reliable sealing performance. The stuffing box is equipped with an auxiliary sealing grease injection structure, which has reliable sealing performance and truly achieves zero leakage. Solve the problem that the general valve packing is easy to leak. 7. When the flat gate valve is closed, the high pressure in the inner cavity can be automatically removed to ensure the safety of use. 8, fully enclosed structure, good protection performance, can adapt to all-weather requirements. 9. The valve is equipped with an indicator rod or observation window to indicate the opening and closing of the valve.

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Wuhan Weituo Fluid Control Equipment Co., Ltd

Address: 1706, Building D, Wuhan Living Room, No.8 Hongtu Avenue, Dongxihu District, Wuhan City

Telephone:0086-18942929031 0086-18571829295

Landline:0086-027-83612831

Fax: 0086-027-83612830

E-mail:watosong@watovalve.com

Website:www.watovalve.com

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