There is now a high-temperature, high-pressure centrifugal pump

　That pump factory is better. The machine seals produced by that factory can ensure reliability

It is still necessary to specify the medium; such information can be found on the samples provided by many pump manufacturers. There are quality-good options available both domestically and internationally, and it depends on how much you are willing to spend. I recommend pumps from the domestic brand Deep Blue. As for sealing, it is important to consider the properties of the medium; you can check the appropriate types on the John Crane website. This post was last edited by xjser on 2007-12-5 at 12:35

The technical parameters are not specified very clearly. Good manufacturers of mechanical seals include Dalian Bergman and Dandong Klon.

It seems there is a centrifugal pump company in Shenyang

1. Have the import and export pressures been reversed? 2. If the pressure ratio is only 0.2–0.3 Mpa, when selecting a pump, only head and flow rate need to be considered ； 3. As for the type of mechanical seal for the pump, pump manufacturers generally take this into consideration ； 4. If your factory insists on specifying a manufacturer for the mechanical seal, then you need to consider (indicate) what the medium is ； 5. For conveying machinery with strict requirements regarding seal leakage, it is generally more appropriate to use series-mounted seals ； 6. The manufacturer referred to as “John Corlan” on the 4th and 6th floors is generally suitable for machine seals (or dry gas seals) of large compressor units; pump machine seals are not their specialty ； 7. Among the pumps I have used, the pumps from Shenyang Greide are good. Last edited by Qingzhe on 2007-12-5 21:27]

Both the sealing systems for John Crane pumps and compressors are manufactured in China; John Crane and John Crane Timing (Dingming) are the two companies responsible for producing these types of equipment, though they are set to merge soon. As far as I know, their pump sealing technologies are considered to be at the world’s leading level

The section in use is the boiler return water part

I think the pressure from the original poster is reversed; there are many manufacturers of centrifugal pumps in China. Well-known manufacturers don’t differ much; our factory has several options, such as Deep Blue, Xi’an Pump Valve, Shanghai Water Pumps, and so on. I don’t know what your medium is. I think you could consider Deep Blue and Xi’an. I think either of these two factories will work. At least no major problems have arisen during operation in our factory. For sealing, it is recommended that you choose \"Borgman\". Personally, I think its performance is still better than that of other sealing manufacturers. If this pump is particularly important, it should be chosen. An established company specializing in pump seals, but its prices are just as astonishing as its quality! Domestic products are cheaper; there’s no need to mention imported ones. I hope the original poster can weigh the pros and cons. Choose carefully!