国产精品无码一区二区三区免费,久热这里只精品国产8,四虎一区

^{<noscript id="rlgqw"></noscript>}

中文|English

Your Current Position: NEWS CENTER > Technical article

26

2021-03

【Technical article】 Control valve common failure analysis and solutions

The control valve is widely used in oil refining and chemical industry. It is used to control the flow rate, pressure and liquid level of the fluid in the production process...
19

2021-03

【Technical article】 How to select valve material under high temperature condition?

Working condition of high temperature including high temperature, high temperature Ⅰ Ⅱ, high temperature, high temperature Ⅲ Ⅳ, high temperature, high temperature Ⅴ level...
29

2021-01

【Technical article】 Operating method of manual valve

Manual valve is a valve operated by handle and handwheel. It is a common valve used in equipment pipeline.Its handle, hand wheel rotation direction clockwise is closed, counterclockwise is open.
22

2021-01

【Technical article】 Maintenance and operation of new valve before commissioning

Pre-maintenance of new valves before operation is a progressive construction concept to protect valve seat seals from seat damage during installation, welding and commissioning
08

2021-01

【Technical article】 Six factors should be considered when selecting sealing surface material of valve

The sealing surface is the most critical working face of the valve, the quality of the sealing surface directly affects the service life of the valve
18

2020-12

【Technical article】 Antifreeze and maintenance of valves in winter

After entering winter, the temperature drops rapidly, the valve often appears the situation of freezing.If left untreated at this point, the pipeline is vulnerable to failure.If it is in some high-risk conditions...
11

2020-12

【Technical article】 The function and advantage of electric explosion-proof ball valve

The electric explosion-proof ball valve has the characteristics of simple structure, quick switching, large flow capacity, zero leakage and so on. It is suitable for the occasions of high viscosity, containing fiber and solid particle fluid.
27

2020-11

【Technical article】 What does the valve arrow on the body mean?

What does the valve arrow on the body mean?The arrow on the body indicates the recommended pressure direction of the valve, not the direction of medium flow...
13

2020-11

【Technical article】 How to maintain the pneumatic ball valve

The use of pneumatic ball valves requires good maintenance of these equipment.It is also a very complicated job to maintain the equipment.It's a lot of work...
30

2020-10

【Technical article】 What should be avoided when installing the valve?

Valve is the most common equipment in chemical enterprises. It seems easy to install the valve, but if it is not executed according to the relevant technology, safety accidents will occur

First <Previous ... 7 8 9 10 11 12 13 14 15 ... Next> End

TOP

QQ客服

+86-027-84805675

1976tina@163.com

亚洲一区欧洲一区_国产经典一区二区_岛国视频一区免费观看_小受咬床单失禁的GV在线观看_亚洲精品蜜夜内射_一性一乱一交一精一品