Working principle of filter

Filter for treatment of water by water entry into the body, the impurities in the water deposit in stainless steel mesh, the resulting differential pressure.Through differential pressure switch monitor changes into the filter outlet pressure difference, when the differential pressure to set data, control device for hydraulic control valves, motor drive signal, caused by the following action: motor driving brush rotation, the filter cleaning, emission control valve to open at the same time, the whole cleaning process for dozens of seconds, when the end of the cleaning, close the valve, the motor stop running, system back to its initial state, began to filter into the next process.
After the equipment installation, the technical personnel to debug,  the technician to set time filtering and cleaning conversion time, to be processed in the water by water entry into the body, filter began to work, when reaches the preset cleaning time, electric control device for hydraulic control valves, motor drive signal, caused by the following action: motor driving brush rotation, the filter cleaning, emission control valve to open at the same time, the whole cleaning process for dozens of seconds, when the end of the cleaning, close the valve, the motor stop running, the system back to its initial state, began to filter into the next process.
Inside the shell of the filter is mainly composed of coarse mesh and fine mesh, soak pipe, stainless steel brush or stainless steel suction nozzle, sealing ring, anticorrosive coating, and other components of the axis of rotation.

(source:http://www.kg-machinery.com/news/working-principle-of-filter.html)

History of valve

The valve is produced with the flow of the fluid pipe. Human use of the valve has been nearly 4000 years of history. Chinese ancient salt brine from salt in absorption, once in the bamboo pipe used in cork valve. In the 1800 BC, the ancient Egyptians used similar wooden plug to control the flow of water in order to prevent the Nile flood. These are the valve prototype. Industrial use of the valve is a large number of applications, from the beginning of the invention of the steam engine Watt. At the beginning of twentieth Century has cast iron, cast steel, forged steel, stainless steel, chrome molybdenum steel, brass and other materials in the valve. Application in various industries, various conditions. The earliest introduction of foreign valve production technology company is not much, after the introduction of foreign production technology, making the domestic valve production technology breakthrough, the quality of the increase, the longevity of the extension.
According to the "2013 China valve industry competition development bottleneck" in the show: with the valve industry to accelerate the pace of restructuring, the industry will be the valve product quality safety and product brand competition between products to high technology, high parameters, high resistance to corrosion, high life direction, only through continuous technological innovation, development of new products, technological transformation, to gradually improve product technology level, to meet domestic equipment supporting, the full realization of the domestic valve. China's valve manufacturing industry in a huge demand environment, will show a better development prospects.
At present, China's valve market turnover of up to 50000000000 yuan, which fully shows the size and momentum of the development of the valve industry in china. But in the industry situation in a good background, there are some problems worthy of our concern, especially in China's valve business mainly in the low level, small scale, family business oriented enterprises. This is a great limitation and bottleneck for the future development of the valve industry in China.
At present, the domestic valve manufacturing enterprises have been able to ISO international standards, DIN German standard, AWWA American Standard and other international standards for design and manufacture of various valves, some manufacturers of products reached the international advanced level. Although the new year's overall level of the valve industry has been greatly improved, but the quality is still not stable enough, such as run, run, drip, leakage phenomenon in the domestic valve often occur.
In addition, the matching capacity of the valve with the developed countries, there is still a certain gap. Valve market competition is becoming increasingly fierce, some ordinary valve products market has been saturated, for more than a request, which makes the development of small and medium enterprises increasingly difficult. And even the high technology products in the international market is also very fierce competition.
Our country in the valve market, has been able to provide heating valve, environmental protection valve, construction valve, etc., more varieties.

（source:http://www.kg-machinery.com/news/history-of-valve.html）

Production technology of thread fitting

Thread fitting consists of a sealing ring, a connecting part and a used to connect the pipe union nut, therefore, described in the sealing ring is designed to have one or more of the knife blade ring.By putting the union nut twist to the connection part, can make the hole knife inserted into the connection part of the cavity, the hole cavity with a conical surface.The outside of the sealing ring at the side of the nut has a circular reinforcement.Described in the annular reinforcement in its department toward the small ring at the transition zone formed a torus.Described formed by strengthening part of the cutting ring ring faces to the slope of the pipe axis to 45 ° to 90 °.When fully assembled, annular axial length of reinforcement as to set it on the surface of the ring heat transfer element to its negative image structure or its transfer to the connection part of the face.Heat transfer element with three dimensional shape, the outline of its negative image can be transfer to the connection parts on the surface.With the method of similar to die, pressure from the assembly will be negative as imprinted onto the surface of the connection part.

（source:http://www.kg-machinery.com/news/thread-fitting-26.html）

Fire hose coupling manufacturers - Shanghai K&G

Shanghai K&G machinery co., LTD is a fire hose coupling manufacturers, specializing in the production of fire hose coupling, have been in the field of manufacturing Fire hose coupling nearly 20 years, Our Fire hose coupling do 100% testing before leaving, and has received warm welcome and good reputation among our worldwide clients.Shanghai K&G machinery Co.,Ltd is Co-founded by Zhejiang Kangtai corporation and Zhejiang Ghili Metal Casting company, as an international sales center in Shanghai.The products passed a lot of international certifications like Europe CE, USA CSA, ISO9001, and PCT…. Our factory has nearly 60 CNC machines, more than 200 skilled workers. We test 100% before delivery, which including pressure test, thread test, appearance test, and connection test and so on, so we can guarantee our quality and service. The turnover exceeds USD 10million annually, and the export sales take up for 80%. We have sold our products to European, American, South-east of Asia, African, etc. Our products are entrusted and reputable with all our customers both at home and abroad. Our slogan is: “YOU ONLY TELL US THE REQUEST, WE DO ALL FOR YOU.”

（source:http://www.kg-machinery.com/news/fire-hose-coupling-manufacturers.html）