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Butterfly valve outlet valve
In the past, the multi-valve system consisting of check valve, globe valve and water hammer eliminator was widely used in the cooling and circulating water supply equipment of industrial production to meet the specific requirements of starting and closing the pump, so as to achieve the purpose of starting and eliminating water hammer with light load.
time:2018-09-21 11:09:02
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Happy news
Warm congratulations to Mr. Chen Dianliang, chairman of our company, who was elected chairman of the board of supervisors of Hunan General Equipment Industry Association.
time:2018-05-25 15:46:51
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National key water supply project North Hubei water resources allocation project: Jihe Shahe water diversion project DN800, PN1.6 piston multifunction control valve DN800, PN1.6 hemisphere valve
National key water supply project North Hubei water resources allocation project: Jihe Shahe water diversion project DN800, PN1.6 piston multifunction control valve DN800, PN1.6 hemisphere valve
time:2018-05-25 15:46:51
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Analysis on the reform of material procurement mode in state-owned enterprises and institutions -- transparent e-business platform transaction mode also applies to material purchase of state-owned units.
After nearly ten years of rapid development, electronic commerce has brought a new revolution to our society and life. It can also be said to be a profound revolution in modern technology, information technology, electronic technology, logistics technology and other modern technical means, which have changed into practical productive forces and production relations. This revolution has deeply affected people. Living environment and living habits. The most representative and successful one is the e-commerce platform represented by Ma Yun. It has greatly changed many habits and habits of our common people. One of the most important reasons for the success of the e-commerce transaction model and the acceptance of the common people is that it can bring real benefits to the people.
time:2018-05-25 15:46:51
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Mr. Chen Dianliang, chairman of the company, published an article: on the innovation of the property right structure of private enterprises in China
Mr. Chen Dianliang, chairman of the company, published an article: on the innovation of the property right structure of private enterprises in China
time:2018-05-25 15:46:51
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Technical requirements of multi-function pump control valve
This standard is applicable to multifunctional pump control valves with nominal pressure of PN1.0MPa - PN4.0MPa and nominal diameter of DN50mm - DN1200mm. Standard technical requirements are introduced as follows: 1 pressure - temperature level multifunction pump control valve pressure - temperature grade from shell, inner part and control pipe system material
This standard is applicable to multifunctional pump control valves with nominal pressure of PN1.0MPa - PN4.0MPa and nominal diameter of DN50mm - DN1200mm.
time:2018-05-25 15:46:51
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Analysis on the problems existing in China's valve industry in 2014
At present, there are still some problems in China's valve industry. For example, China's valve enterprises are mainly low-level, small-scale and family workshop type enterprises. In terms of products, due to repeated investment and insufficient technology import, the leading products of China's valve enterprises are still low-quality mass products. It is understood that at present, all kinds of valves produced by enterprises in our country have some disadvantages, such as leakage, leakage, low appearance quality, short life, inflexible operation, and unreliability of valve electric device and pneumatic device. Some products are only equivalent to the international level in the early 80s of last century, some of the high temperature, high pressure and key equipment needed Valves are still dependent on imports
time:2018-05-25 15:46:51
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Common failures and preventive measures for automatic valves
Fault one: the valve is not through. The reasons are as follows: (1) the control channel is blocked by the sundries (the passage is small and easy to be blocked); and the piston is stuck in the highest position because of rust stains; although the upper part is stressed, it can not move down and can not open the main channel. Therefore, before the piston pressure relief valve must be installed filters, for newly installed or long-term discontinued pressure relief valve, must be disassembled for inspection and cleaning.
time:2018-05-25 15:46:51
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How to install stainless steel valves
1, when the valve is lifted, the rope should not be tied to the handwheel or stem, so as not to damage the components and should be tied to the flange.
2, before installation, the valve should be checked to check the specifications and types, identify damage, especially for stem. It also needs to rotate a few times to see if it is skewed, because the most easily inclined stem is in the transportation process. And remove the sundries in the valve.
time:2018-05-25 15:46:51
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Causes and elimination of valve stem leakage
When the ball valve is used, the valve rod leakage often occurs. It is necessary to find the reason for the leakage of the valve stem according to the specific conditions, so as to eliminate the failure and ensure the ball valve to be used normally. If the pressure of the pipe is too high and the ball valve stem leakage is caused by the pressure range of the ball valve, the ball valve must be replaced, and the ball valve is selected to meet the pressure of the pipe to ensure the normal operation of the pipe and the related equipment.
time:2018-05-25 15:46:51
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