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Valve body wall in high pressure and corrosive media occasions, the valve body wall, diaphragm valve diaphragm often subject to media impact and corrosion, we must focus on inspection of pressure corrosion resistance; spool valve spool is the movable part of the valve One of the more serious erosion by the media, the valve should be carefully checked when the various parts of the valve is corrosive, wear and tear, especially in the case of high pressure differential valve core wear due to...
1, Love wash method: welding slag, rust, slag and other piping in the throttle, guide parts, under the valve cover to balance the hole caused by blockage or stuck so that the valve surface, the guide surface of the resulting injury and scratches . In this case, you must uninstall the cleaning, remove the slag material, such as the sealing surface is also damaged should be ground; at the same time the bottom plug open to flush away from the balance hole into the valve cap slag material, and the...
shut-off valve, stop valve factory, cut-off valve factory The opening and closing valve ( stop valve / globe valve ) is a plug-shaped valve flap, the sealing surface is flat or conical, and the valve flap moves linearly along the centerline of the fluid. The valve stem is in the form of a lifting rod (the stem moves up and down, the hand wheel does not lift), and there is also a lifting and rotating rod type (the hand wheel rotates and lifts together with the valve stem, and the nut is arranged...
Recently, the technical achievements of the processing-free printing plate-based aluminum plate developed by the China Aluminum Materials Institute and Chinalco Ruimin have been evaluated by experts in the non-ferrous metal industry. The overall technology has reached the international advanced level. Among them, the aluminum profile and anodized quality indicators Reach the international leading level. In order to break through the technological blockade, the China Aluminum Materials Institute...
So far, no scientific instrument can accurately distinguish the difference between Qinghai material, Russian material and Hetian jade. Therefore, the country is also vague in this definition, and the term "Hetian jade" is used in general. However, it only represents jade species and does not represent its origin! However, we all know in the industry that the authentic price of goods between Xinjiang Hetian jade and Qinghai materials and Russian materials is far from the selling price....
Hetian jade is a kind of nephrite. In China, more than 98% of the tremolite components are named Hetian jade, and Hetian jade has a broad and narrow sense. The jade in the narrow sense generally refers to Xinjiang Hetian jade. In the broad sense, Hetian jade also includes Russian jade, Qinghai jade, Korean jade and so on. Xinjiang materials: Xinjiang Hetian jade has a vibrite content of 95%~99%, which is a blanket-like interweaving structure. The mineral particles are extremely fine and there...
Hetian jade has a broad and narrow sense. In the narrow sense, it refers to Xinjiang Hetian jade. In a broad sense, it also includes Russian jade, Qinghai jade, and Korean jade. Hetian jade has no difference in mineral composition and chemical composition, and only slightly differs in impurity minerals and trace elements, and each has its own characteristics. First, Xinjiang Hetian jade Xinjiang Hetian jade is mainly distributed in the Kunlun Mountains and the Altun Mountains under the...
Recently, some friends are asking what is the old material and the old material. It seems that the friends (especially the newly involved friends) still do not understand the several major categories of the material of the yabai. Here, write this article. Answer questions for friends. Some of the content in the text is to pick up other authors. There is no way to list them one by one. Thank you! Before explaining the three types of materials: raw materials, old materials, and aged materials,...
The kitchen is a place where food is created. If the kitchen is not well-decorated, it will make people lose appetite, and it will make the whole kitchen unhealthy. The kitchen countertop is the place that can be seen at first sight in the kitchen, so the countertop The face of the kitchen. The next small series for everyone to introduce the kitchen table which kind of material is good. Which kind of material for kitchen countertops is good for fireproof board countertops The fire-resistant...
Description of content The utility model is a novel valve actuator connecting device belonging to the technical field of valve actuator connecting device. Background of the Invention Actuators use liquid, gas, electricity or other energy sources and convert them into drive action through motors, cylinders or other devices. The basic actuator is used to drive the valve to the fully open or fully closed position. Actuating and control valve actuators enable precise positioning of the valve to any...
(A), the valve used on the water supply pipeline, the general principle of choice according to the following: 1, the diameter is not more than 50mm, it is advisable to use a stop valve, pipe diameter greater than 50mm gate valve, butterfly valve. 2, need to adjust the flow, water pressure should be used when the control valve, globe valve. 3, requiring a small flow resistance parts (such as the pump suction pipe), should adopt the gate valve. 4, the flow should be two-way flow of pipe sections...
Automatic pressure control liquid-controlled slow-closing butterfly valve is currently used for turbine inlet of the key control equipment, has a good seal, adjust the performance and create a unique three-eccentric structure of the basic structure of the hydraulic butterfly valve, auto insurance Pressure liquid control slow closing butterfly valve by the field application, the operating system is running well, in addition to the butterfly valve has the advantages of three eccentric structure...
J45Fs DC Fluorine Plastic Globe Valves, designed to control highly corrosive media with a variety of fluoroplastics on the surface of the body cavity for different operating temperatures and fluid lines. High strength, good corrosion resistance. Straight through lined with fluorine valve manufacturing and standards Design and manufacture: GB12235 Structure length: GB12221 (1 series) Flange connection size: GB4216 JB78 Straight-through fluorine valve material: Body, bonnet: HT200, ZG230-450,...
Gas emergency shut-off valve of the main applications are what Gas emergency shut-off valve is installed in the gas tank / pipe outlet emergency can quickly cut off the valve, the use of solenoid valve to control the closure of the valve, is one of the more ideal safety valve. Gas emergency shut-off valve is normally open type pulse triggered solenoid valve. Gas emergency shut-off valve has the advantages of simple structure, responsiveness, reliable operation, self-locking accident and manual...
First, the valve leakage: Reason: 1. Strict closure 2. Combination of surface damage 3. Spool and stem clearance is too large, resulting in spool drooping or contact is not good 4. Poor sealing material or spool jam. Treatment: 1. Improve operation, reopen or shut down 2. Valve disassembled, valve core, seat sealing surface regrind 3. Adjust the valve stem and valve stem clearance or replace valve 4. Valve disassemble, eliminate jam 5. Replacement Or surfacing seals Second, the filler leakage:...
Control valves play a very important role in the automation of modern plants, whose production depends on the correct distribution and control of the flowing medium. These controls, whether energy exchange, pressure reduction or simple vessel loading, require some final control element to accomplish. Regulating valve is a series of control valves, the main role is to adjust the media pressure, flow, temperature and other parameters, the process control loop in the final element. How to solve...
Pump common suction pump one, the pump is not suction Second, the motor speed is not enough Three, the pump vibration or noise Strong pump common faults First, the pump does not absorb the oil causes: 1, the suction pipe blocked or leak 2, the inhalation height exceeds Allow suction vacuum height 3, the motor reverses 4, the medium viscosity is too large 2, the flow rate down reason: 1, suction pipe blockage or leakage 2, screw and pump sleeve wear 3, safety valve spring is too loose or valve...
Magnetic flap level gauge components damage failure and treatment: Magnetic flap level gauge in the practical application of often failure, of these failures, some caused by a single component failure, some caused by simultaneous failure of multiple components. Magnetic flap level gauge common fault and its causes are as follows: A: The display panel is abnormal The reasons for this failure are usually the following: 1, the gap between the flap and the guideway design unreasonable or too small,...
Needless to say, there are always problems with the machine when it is in use, but the best machine performance can be guaranteed by good use and maintenance. In order to ensure normal supply, the normal use and quick maintenance of the pipe pump have become the oil depot equipment Management of the most important task. Test work: check whether the connector is loose; hand crank the coupling so that the rotor turns a few times to see if the unit rotation is flexible, whether there is sound and...
Electric Ball Valve It has the action of rotating 90 degrees, the plug body is a sphere, with a circular through hole or passage through its axis. Electric ball valve is characterized by its compact structure, reliable sealing, simple structure, easy maintenance, sealing surface and the spherical often closed state, easy to be media erosion, easy to operate and repair. Ball valve in the pipeline is mainly used to do electric ball valve cut off, distribution and change the flow direction of the...
Valve is an important component of the piping system of petrochemical plant. Due to its large number and large quantity, the valve is one of the main leakage sources in the installation. Therefore, the valve leakage is of vital importance. Valve sealing performance refers to the valve sealing parts of the media to prevent the ability of leakage. The main sealing parts are: the opening and closing pieces and the seat between the anastomosis, packing and the stem and stuffing box with the valve...
Hydraulic electric pump is a type of hydraulic machinery that we often use. Novices should pay attention to some problems when using the hydraulic electric pump. Avoiding improper operation will impair the normal use of the hydraulic electric pump in the future. We are in the use of any product due to improper operation or the product itself and other issues, resulting in the use of the product is very prone to problems, which requires us to understand the product is very thorough, know where...
Pump Category: The classification of pumps can not be integrated into the working principle and purpose of classification, it will be chaotic. Use is useful, the principle is the principle, different principles of the pump can be used in the same purpose. The same pump can also be used in different places, can be used for different purposes. For example: The mixed flow pump is a diagonal flow pump, which adopts a mixed flow impeller, that is, the liquid flows out of the impeller in a direction...
Hand-held pressure pump is a gas-type hand-held pressure pump for industrial applications in the field of pressure measurement instruments installed in the control room and control the use of various types of pressure gauges, but also for the school to provide pressure pump, the range of -80kpa- Within 4.0mpa various types of pressure transmitters, pressure sensors and various types of pressure instruments can be used to check the pressure hand pump. Hand-held pressure pump for portable, light...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.