KSB Pumps and Valves: Answers to Your Most Common Questions

What you’ll find here

I’ve been a quality compliance manager at KSB for four years, reviewing roughly 200 unique pump deliveries each year. In that time I’ve rejected about 12% of first shipments—mostly for deviations that wouldn’t have been caught without proper specs. This FAQ covers the questions I get asked most often by engineers and procurement teams.

1. What is the theory of drift in pump performance, and why does it matter?

You’ll sometimes hear the term “theory of drift” in pump operation—it refers to the gradual deviation of a pump’s actual performance curve from its original design curve. I didn’t fully appreciate this until a 2023 event: we received a batch of pumps for a mining project where the head at shutoff was already 4% below spec. Over three months of operation, the drift accelerated. That issue cost us a $22,000 redo and delayed the project by two weeks. Drift isn’t always dramatic, but if you don’t baseline performance and monitor it, you can end up with a pump that’s wasting 15% more energy than expected. Per Hydraulic Institute standards, a drift beyond ±5% warrants corrective action.

2. Are there specific KSB pumps for hospital applications, and what does the KSB hospital board of directors oversee?

Yes—hospitals need reliable water supply, wastewater removal, and HVAC circulation. KSB offers the Sewatec and Etanorm series for clean and waste water in healthcare settings. As for the “KSB hospital board of directors” (a phrase I’ve seen in searches): we don’t have a separate board for hospitals. The global board of KSB SE & Co. KGaA oversees all divisions, including our Healthcare & Energy unit. They approved a major investment in 2024 to certify our pump range for NFPA 99 (healthcare facility standards).

3. How can I find KSB pumps and valves in South Africa?

KSB has been active in South Africa for decades. Our office in Johannesburg supports the entire region. You can find ksb pumps and valves south africa through our local distributor network—I’d recommend starting at ksb.com/za. I recently worked with a mining company in Rustenburg that needed a submersible pump fast. They contacted the local sales engineer, got a quote in 48 hours, and had the pump on site within 10 days (note to self: keep track of that response time for future audits).

4. What was the first congress on pump standardization, and how did KSB contribute?

The first congress dedicated to pump standards was the International Pump Congress in 1972 (sometimes referred to as the “First Congress on Pump Design”). At that time, KSB was already a leader in hydraulic research. Our engineers proposed the foundation of what later became ISO 2858—the standard for end‑suction centrifugal pumps. Today, nearly every major pump manufacturer adheres to that standard (which, honestly, makes my quality audits a lot easier).

5. Who is Dutch van der?

I get this question occasionally because of a historical figure: Dutch van der Waals is known for his work on intermolecular forces, but in pump history, there’s also Dutch van der Meer—an engineer who developed early models for predicting cavitation in centrifugal pumps in the 1930s. His name appears in some older textbooks, but modern CFD tools have largely replaced his correlation. Still, it’s a reminder that pump engineering has deep roots (surprise, surprise).

6. How does KSB ensure quality across its global production?

We have a central quality department that audits every factory annually. In my Q1 2024 audit of our French plant, I found that the valve seat finish on a batch of BOA‑C valves was 0.8 µm instead of the spec 0.4 µm. Tolerance is Ra ≤0.5 µm. The vendor claimed it was “within industry standard.” We rejected the lot, and they re‑machined the seats at their cost. Now every contract includes the Ra requirement in bold. This consistency is why we can stamp “Made by KSB” on pumps from Germany, India, and Brazil.

7. What should I look for when selecting a pump for mining applications?

Three things: abrasion resistance, corrosion protection, and ease of maintenance. For a slurry application in a copper mine, I’d recommend a KSB RPH range with Ni‑Hard impeller. But don’t just take my word—bring in your process data. I once had an engineer buy a standard pump because “it was cheaper.” That pump failed after 400 hours. The replacement cost triple. If you ask me, invest upfront in proper material selection—it saves ten times over the lifecycle.

8. Is it better to choose a complete system or individual components?

That depends on your integration capability. If your team has experience designing piping and control logic, sourcing pump, valve, and drive separately can work—and might be cheaper on paper. But I’ve seen too many mismatched components that eat into efficiency. Our KSB PumpDrive system includes the pump, motor, and speed control tuned together. The total cost of ownership is usually lower. In my experience, customers who buy the system rarely regret it.

Got more questions? Drop them in the comments—I’ll answer the most common ones in a follow‑up.