Q:What are the ten major brands of China's valves?

1. fine fine group valve Co., Ltd.2. Zhuzhou Southern valve Limited by Share Ltd3 Chinese KaiWeiXi valve group4 the Sufa technology industry Limited by Share Ltd5 Zhejiang Chaoda valve Limited by Share Ltd6. Sichuan Zigong high pressure valve Limited by Share Ltd7. 、 Shanghai Valve Manufacturing Co., Ltd.8. Guangdong Mingzhu group Limited by Share Ltd9. three flower holding group10 Shanghai Valve Factory Co., Ltd.

Q:What does the valve QF mean?

Valve type, one of the contents, Q refers to the ball valve, F refers to the F-4 seals.

Q:Which valves are used in the power station?

Water supply system: butterfly valve, gate valve, eccentric hemisphere valveOil and gas system: stainless steel ball valve, stop valveFire fighting system: gate valve, relief valve, relief valve, sprinkler system

Q:Chinese valve and a valve which is better?

Look what valve you use, ah, these two can be ah!

Q:What does valve DN50/80 mean?

Hello landlord DN50 valve refers to the valve diameter of 50mm DN80 is 80mm if the valve is opening and closing function, so the valve diameter should be and pipeline with the diameter or smaller number, large waste, butterfly valve to be stuck in the flange, the influence of flow.If the role of the valve is adjusted, and that caliber will be different from the pipe diameter, this is not to reduce the cost of the problem, is a result of calculation, and this calculation results with flow, pressure drop and valve resistance curve.For example, control valve, usually smaller than the pipe diameter, such as pressure reducing valve, will be smaller than the pipe diameter to two, such as 57mm pipe with DN50.

Q:Symbols for all types of valves

In addition to the throttle valve (L) valve (H) valve (U) valve (Y) of the four types of valves, the other is according to the first letter of the easy to remember the four valve but also second word the first letter and the other valve is repeated with the first letter of a very good record I was just valve knowledge I hope to help you!

Q:What are the technical requirements of valves, such as "Z15W-25T"?

Z = gate valve1 = internal thread connection5 = dark rod type (structural form)W = body seal payments25 = 2.5MPa (nominal pressure)T = copper (body material)Landlord can refer to JB/T 308-2004 valve model preparation methods

Q:What is a heavy body valve?

To put it plainly is the question of weight... This is to the wall thickness and weight, specifically on what to use

Q:What is a hot melt valve?

The valve is hot melt and ppR/PE plastic pipe connecting with hot melt connection valves, general valves generally use the threaded connection or flange connection.

Q:Representation of several types of valves

Valve type:Z gate valveJ stop valveL throttling valveQ ball valveD butterfly valveH check valve and bottom valveG diaphragm valveA safety valveT regulating valveX plug valveY pressure reducing valveS trapDZ solenoid valveO electromagnetic motionDrive mode:1. electromagnetic and hydraulic action2., electricity, a liquid3. worm gear4. the spur gear rotates5. bevel gear rotation6. pneumatic7. fluid movement8. air and one liquid movement9. electricOther hand wheel, handle, board hand, no performanceSide mode;1. internal thread2. external thread3. flanges (for double spring relief valves)4. flanges5. flanges (for lever type, safety door, single spring safety door)6. welding7. pairs of clips8. clamps9. card sleeveIllustrated cover or lining:T copper alloyH alloy steelB tin based shaft (bearing alloy)Y cemented carbideX rubberJ hard rubberSA PTFESB poly three fluoro ethyleneSC polyvinyl fluorideSD phenolic plasticsSN nylon