Selection of valves
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Regarding the selection of control valves, for those in non-critical areas, products from domestic manufacturers such as Shanghai Automation Instrument Factory and Wuzhong Instrument Factory can be used. Valves for critical locations must be products from well-known imported brands such as Fisher, ARCA, Flowserve, Emerson, and others. Regarding some key valves used in water-coal slurry gasification (mainly including slag locking valves, coal slurry valves, black water/gray water valves, etc.), the three best brands available internationally are Perrin from Germany (specializing in ball valves, often used in combination with Rotork actuators from the UK and widely employed by Yankuang), Flowserve (which has the Argus brand, offering actuators, control valves, etc.), and Nels (which is strong in ball valve technology). In terms of transmitters, the main manufacturers available include Rosemount, Honeywell, Yokogawa EJA, SIMENS, etc. Rosemount is relatively expensive, while EJA is a bit cheaper. For the main analysis instruments, products from ABB or SIMENS can be chosen, as the products of these two companies are the most widely used.
Bro, Fisher makes control valves... and Emerson and Fisher are part of the same company. Besides, how can there be no GE in the field of analytical instruments?
There are four well-known imported brand control valves whose companies have a history of over a century: 1. FISHER (founded in 1880; it is now part of Emerson’s valve division, entered the Asia-Pacific region in 1974, with its headquarters in Singapore); 2. Messer Schuckert (founded in 1882; it was acquired by DRESSER in 1985); 3. Yamada Denki of Japan (founded in 1906); 4. SANSON of Germany (founded in 1907). NELS is a valve company under METO!
It’s really good. Really good. I’ve learned something
Valves imported from abroad are definitely quite expensive; our ceramic valves can fully replace those imported ones. We can discuss the specific application conditions further