How to buy industrial valves for the right types of investors required with the most reasonable price and still ensure quality, that is quite a headache of the budget estimator. In today's article, Dai Nam would like to give some small notes to help customers when shopping for industrial valves suitable to the requirements of the project ..
Because the characteristics of each industry are different, depending on the field, we have to choose different valves. But basically you can't ignore the following parameters:
It is necessary to determine the medium in which industrial piping and valves are working
- If the solvent is water, we choose the valve with the disc as iron, stainless steel, Seat ring is EPDM (synthetic rubber material)
- If the solvent is a chemical with a light concentration, less corrosive, we can use stainless steel plate, seat ring is NBR or EPDM.
- As for chemicals with high corrosive properties, high concentrations, do not use the above valve material because when installed in the system, it will be destroyed after a few days of use. One must use valves made of PTFE, or stainless steel, coated with Teflon on the substrate in contact with the solvent.
Pressure and temperature must be determined
With materials with Seat EPDM, NBR can withstand 10bar pressure and temperatures below 100 oC. If the pressure and temperature are high, the valve will be destroyed. Then you have to choose a more advanced material that is the valve with stainless steel disc, the seat is padded with 304 or Inox316. If the system has high pressure and high temperature, we have to choose the valve line with PTFE, TEFLON materials.
Installation standards
Usually in the world valve and piping systems have the following popular standards:
- JIS standards are Japanese standards (JIS10K, JIS 20K, JIS 30K)
- ANSI standards are American standards (ANSI 150 #, ANSI 300 #, ANSI 600 #).
- PN standard is the standard of European countries such as PN10, PN16, PN20.
If the valve on your piping is using the JIS standard and you buy the ANSI standard valve for installation will not match, similar to the valve using the ANSI standard you buy the PN standard valve to install also does not have, or Your valve is using the JIS standard that you bought to the PN standard and it will take you back.
Determine the size of the valve and the solvent pipes
The size of the valve is always smaller than the size of the pipeline. When we choose the wrong size, the valve and pipe cannot be installed together.
Specifically:
Size valve 10A (mm) with pipe size 17 mm
Valve size 15A (mm) fitted with pipe size 21 mm
Size valve 20A (mm) fitted with pipe size 27mm
Valve size 25A (mm) fitted with pipe size 34 mm
Valve size 32A (mm) fitted with pipe size 42 mm
Valve size 40A (mm) fitted with pipe size 49 mm
Size valve 50A (mm) with pipe size 60 mm
Valve size 65A (mm) fitted with pipe size 76 mm
Size valve 80A (mm) with pipe size 90 mm
Size valve 100A (mm) with pipe size 114 mm
Size valve 125A (mm) with pipe size 140 mm
Valve size 150A (mm) fitted with pipe size 168 mm
Valve size 200A (mm) fitted with pipe size 220 mm
Valve size 250A (mm) fitted with pipe size 273 mm
Valve size 300A (mm) fitted with pipe size 323 mm
Valve size 350A (mm) fitted with pipe size 355 mm
Valve size 400A (mm) with pipe size 406 mm
Valve size 450A (mm) fitted with pipe size 457 mm
Valve size 500A (mm) with pipe size 508 mm
Valve size 600A (mm) fitted with pipe size 609 mm
Valve size 700A (mm) fitted with pipe size 711 mm
Size valve 800A (mm) with pipe size 812 mm
Valve size 900A (mm) fitted with pipe size 913 mm
Valve size 1000A (mm) with pipe size 1014 mm
Select valves according to installation requirements
Based on the operation process and installation requirements of each large / small-scale system, valve opening / closing conditions in complex or difficult terrain, there will be industrial valves, hand crank, valve, Automatic control valves are suitable for the nature of the work.
Industrial valve handle is often used for small pipes, the flow is not large, and the hand valve is more commonly used and is convenient to open / close for large pipes.
As for large-sized pipes or installed in difficult terrain areas such as underground pipes, factory clean water supply systems, construction wastewater systems or hydropower dams' drainage systems. it is very difficult to maneuver the valve operator. Therefore, choosing to buy industrial valves with automatic control is very necessary.
The above notes when choosing to buy industrial valves. Hopefully, through this article, customers can choose for themselves the right valve for each project.
Contact Dai Nam company immediately, for more detailed information on industrial valves as well as enthusiastic advice on the product.
For more information please contact:
DAI NAM SCIENCE INDUSTRIAL JOINT STOCK COMPANY
Address: Room 303- 3rd floor, AN BINH mixed building 1- Number 3 Tran Nguyen Dan street-Dinh Cong new urban area- Dinh Cong ward - Hoang Mai district - Hanoi.
Hotline : 0383 478 272 Tel : 024 364 00111
Email: dainam@dainamco.vn Website: congnghiepdainam.com.vn
