Your Guide to HDS Corrosive Applications

hds corrosive applications

When it comes to slurry, not just any pump will do. Over time, slurry will ultimately break down most standard pumps—you need something stronger. Our heavy duty slurry (HDS) pumps are built right here in the U.S., and are made to withstand HDS corrosive applications. 

Keep reading for more information about HDS corrosive applications and how to handle them. 

The Importance of Performance

If you think a standard water pump is strong enough to continually pump slurry without any problems, think again. Slurry is a unique mixture of very abrasive solids and liquids, and requires a special pump to move. 

You need a pump specific to slurry—and one that will continually perform, resist wear and tear, provide the necessary power, and be easy to maintain. Not all slurry pumps are created equal. Every pumping environment is different, and requires different things out of its machinery. Because of the variety of requirements, you need a variety of pump sizes, types, and mounts. Custom submersible and slurry pumps are a must if you want optimal performance and a long machine lifespan. 

So, When Do You Need an HDS Pump Vs. a Regular Slurry Pump? 

While a slurry pump will perform significantly better than a water pump, sometimes—with certain applications—you need something with extra heavy-duty capabilities. Here are a few examples of HDS corrosive applications:

Applications with a low pH balance or a high amount of chlorides can be very challenging and costly when using a standard submersible pump. Applications with a pH balance of one to four require special materials like casings, impellers, suction liners, and a stand varying from super duplex 2205 and 2507 to Alloy 20. 

In regards to applications with a higher pH balance, you can consider CD4MCUN, 316 stainless steel. In this case, material changes will also need to be made to the machined parts and bolting. 

When it comes to seal upgrades, most applications require a more robust seal, such as the John Crane 5840 in the 2205 material, as well as silica carbide faces. Keep in mind that most standard submersible motor manufacturers don’t make a stainless steel motor with a robust slurry seal option. 

Getting your hands on a motor flange that’s crafted from a material suitable to the application is crucial, as it protects both the seal and the motor flange from corrosion, and helps prevent seal failures. 

You’ll also need to select motor and control cables for your specific application. Most cable materials are suitable, but it’s important that you always check. 

Can Your Pump Handle HDS Corrosive Applications?

The Vulcan HDS slurry pump is a top product for us—and with good reason. They’re made with application-specific metallurgies to withstand both standard and atypical abrasion. Everything about our pumps is high-quality and American-made. Interested in learning more about our HDS pumps? Vulcan Pumps is poised to meet your needs and deliver quality on every front. Get in touch with us today.