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Hydraulic diaphragm pump manufacturers

2015-07-23View Original

Thread Content

Pressure: 10.0 MPa, flow rate: 4500 L/h; the medium is xylene or similar, containing about 15% solids. A hydraulic diaphragm metering pump is required for transportation. Which manufacturers’ products are reliable? Please also recommend others to you. Thank you! !
Reply #22015-07-23
The hydraulic diaphragm pumps from Lewa B&L perform well in the petrochemical industry. Your sample has a somewhat high particle content, so pay attention to the service life of the diaphragm. For pure transfer, consider using a process diaphragm pump; they usually have three plungers, the flow rate is not adjustable, but they are more compact.
Reply #32015-07-24
I’ve been using Riva, but I need to compare it with a few other options. Could someone from those other companies give me their number? It’s purely for transportation, and it mainly contains solids; this poses some difficulties, as the valve balls tend to wear out quickly. One manufacturer in China told us that the valve balls last only one month – that’s an extremely short lifespan.
Reply #42015-07-24
Poster: Come to me for this; I’m more than capable of handling it. There are performance metrics similar to those of pumps. Contact me!
Reply #52015-07-24
LEWA pumps are good; another option is the American brand Wanner plunger diaphragm pumps. Both should be suitable for your application requirements. However, when dealing with high pressures and high solid contents, it’s crucial to pay close attention to the material used for the diaphragm, as otherwise it can easily get damaged.
Reply #62015-07-24
Summary: Imported pumps – Riva, Brown Ruby; Domestic: Hefei General, Dalian Lailei
Reply #72015-07-24
Please leave a phone number on the 5th floor. Could you also give phone numbers for the others? Thank you!
Reply #82015-07-27
Switch to a plate valve; it should last longer
Reply #92015-08-01
How do Milton Roy’s hydraulic diaphragm pumps perform under these operating conditions? Mainly high pressure (10 MPa) and large flow rate (5 cubic meters)
Reply #102015-08-02
Riva is a bit better; you can contact the manufacturer to inquire about the relevant models. However, too many medium particles can easily damage the diaphragm and check valve. If it is only for transfer, it is not recommended to use a metering pump, as most metering pumps have high requirements regarding the cleanliness of the medium; other types of pumps can be chosen instead. If metering accuracy is required, a flow meter can be installed

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