FAQ
Which pumps can I run dry?

Diaphragm pumps, piston pumps and peristaltic pumps can be run dry for any length of time. Centrifugal, rotary vane, and gear pumps should not be run dry; exceptions are if the gear or impeller is made of a self-lubricating material such as RYTON in which case the pump can be run for a few minutes while priming.

What about the price level?

We are confident that our prices are competitive compared with those at the same quality level, since we have stayed in this filed more than 18 years. And we always adhere to the principle of provide top quality products with competitive prices.

Why we find some prices are very high compared with some other supplier, and from the picture or it's parameter, all looks the same?

As China is still a developing country, there are only a few products with patent rights, and copy products l spread very fast in the market. Of course, the prices of those copy products with cheap material and less quality control are relatively cheaper.

What is the maximum viscosity rating for pumps?

This depends on the type of pump and the specific pump. Diaphragm pumps (especially double diaphragm pumps) and gear pumps are usually the best for viscous fluids.

Why is it necessary to know the size and length of tubing the pump will be connected to?

Long or restrictive tubing causes high pressure drags. This will reduce the pump flow and/or require more power.

My application requires an opening flow/pressure that is not listed on your charts, would it be possible to get a custom spring?

Yes, we do design custom springs for special applications.

What’s your delivery time?

1.The stock samples can be sent to you within 3-5 days by international express after received 2.The batch order can be shipped to you in about 30-40days after order confirmation (by air or by sea)

I order the same items frequently, can I get them shipped automatically on a regular basis?

You can place a blanket order for up to a year with us, specifying the amounts and dates you want shipped.

Can I buy one pump directly from TOPSFLO?

TOPSFLO Micro Pumps builds to order for the Original Equipment Market. Generally, quantities of 100 pieces or less can be purchased from one of our distributors or online sale webs.

What information can I get when I contact your sales engineers?

TOPSFLO Since 2005,The leader of High-end micro dc pump

How can I choose the most suitable pump?

Please tell me your detailed flow rate, pressure, running time, voltage, application, fluid, ambient temperature and so on, then I will match the most appropriate pump for you, or you can choose the exact model in the product manual.

How do I order a custom product from TOPSFLO?

Please contact on of our sales engineers by E-mail:sales@topsflo.com. Our highly trained team will help you source the custom product you need.

How can I contact TOPSFLO's technical or sales support?

There are several ways to contact our technical or sales staff: By phone at +86-731-82739266 from 8:00 AM to 6:00 PM Beijing time in working days, by email at info@topsflo.com or via live chat on our website www.topsflo.com.

What’s the main products of your company?

We specialized in all kinds of micro pumps (micro BLDC centrifugal water pump, micro gear pump, high performance diaphragm air/liquid pump) for over 10 years with excellent quality and competitive.

What about quality assurance?

We offer one warrantee period beginning from the time of shipment for OEM application, we can provide spare parts for replacements, if our serious product problems, we can make replacement of free charge.