Resimac 200 Series – For Pump Repair and Refurbishments with Chris Mathson from Resimac
Who It’s For
This session is useful for:
Maintenance Engineers
Plant Managers
Asset Management Technicians
Marine Surveyors
Pipefitters
Pump Repair Engineers
About the Speaker
Chris Mathson is the Business Development Manager, at Resimac Ltd., bringing 18 years of experience in coatings.
Resimac 200 Series – For Pump Repair and refurbishments with Chris Mathson from Resimac
Lately Unconventional Solutions has been getting a lot of requests for information about pump repairs. Some requests that have been coming in. One is a typical erosive damage on the inside of the pump that needs to be repaired. Sometimes the pumps are 50-60 years old, and it is just really hard to replace them. They are also wanting, when asked, to increase the fluid flow.
FUN FACT: Around the world is spent on moving water via pumps, so that cost can get pretty high, and that coating actually tends to pay for itself pretty quickly in that process.
It seems that energy costs are going up, and to take the factor to help process plants help their energy costs go down over time. The older the part / pump gets the more energy and maintenance it will use over the lifespan of the product.
How do you keep a pump in service? How do you keep good flow? When pumps age, it is not only the replacement of the pump; it is also the replacement parts that add to the cost.
The ability to bring back the OEM efficiency and increase the flow, energy cost, wear resistance, etc.—that is what we want to help with. The Resimac 200 Series are great products to help with these problems. To coat on, you can’t really coat over a divot. It’s going to entrap air. It’s going to have other issues, you know, just in the application process. And of course that’s going to be a weak spot if you don’t address it first. So those are the things. This is a cold weld, if you will, like a weld replacement.
It’s a two-part epoxy that has ceramic filler in it, and those are the things that it’s designed to fill in the pitting to rebuild, you know, restore that worn metal surface back to a semi- or completely uniform state.
Finish . It’s, you know, surface prior to probably overcoating it with what you’re going to show next, which is that ceramic fluid coat, you know, the brushable coating. You have 2 layers. A lot of shops will simply fill in the pitting because that’s what they have the budget and the time to do, but over time this area will wear.
Repack it. If you’re going to do the maintenance, why not go those extra couple of steps to abrasively blast the surface, clean it up, fill in the pits, and then apply a two-part epoxy ceramic coating over top of it? What they saw then was that efficiency gain.
The best return on your investment is in protecting and restoring that asset back to the performance that you are looking for without the need of replacing it.
If you would like to see the full study from 2026, we can send it to you. There is a right solution/application for your problem.
- Solvent-free epoxy technology
- High build capability – 25mm or 1″ without slump
- Simple mixing ratio 3:1 by volume
- Suitable for metallic surfaces
- No shrinkage
- Excellent chemical resistance
- Superior adhesion to metallic surfaces
- Contains hardened ceramic fillers
- Enhanced WEAR & ABRASION resistance
- Solvent-free epoxy technology
- Apply by brush
- Protecting metallic surfaces in aggressive fluid flow environments
- High-gloss finish for improved flow rates
- No shrinkage
- Excellent chemical resistance
- Ideal for low- to medium-particulate fluids
- Contains hardened ceramic fillers
- Solvent-free epoxy technology
- Apply by brush up to 12 mils per coat
- No shrinkage
- Excellent chemical resistance
- Super Adhesion to metallic surfaces
- High-gloss finish for improved flow rates
- Ideal for low- to medium-particulate fluids
We typically suggest doing the 2-layer system. That tells you it’s time to reapply that coat. That way you don’t ever eat into that metal again; you’re only eating through.
QUESTION:
What types of pump failures or which areas do you see most often where these repair products make the biggest impact?
ANSWER: The older pumps that have been functioning for a long time are the ones that have erosion on the interior. The new ones are not the same size and form. All of the areas have a continual flow, and if it picks up some materials, it becomes rough. We may fill in holes and cracks and protect it with a top coat. And put them back to work. There could be a number of various reasons why it might wear down, erode, or wear away in that location, right? It could be a solid, a chemical, something that is really hot, or something that is not from this world. There are paste-grade materials and system coatings that will work for what you require.
QUESTION:
When you’re looking at the 200 series in the field, how do you typically position 201 versus 202 versus 203 depending on the failure mode, especially when you’re dealing with erosion versus corrosion versus mechanical damage?
ANSWER: The solution is simple: the 201 and 202 are not the same. 201 is a substance that is used to grade speed. So, when you think about it, fixing your car is like putting in body filler. If you have those gouges, pitting, or cracks, it’s easy. That’s the stuff that fills in the gaps (damage from erosion or corrosion). You’re rebuilding with the 201 pay screen. 202, then 203 again. And what is your desired final result? Is it mainly about sliding abrasion or do we want to improve the flow and be more resistant to cavitation? I would argue that those are probably the main issues. There are two unique codes that explain why I’ll move from 202 to 203 or the other way around.
QUESTION:
We have that new 101 HT product, right, which is a high-temperature version of our regular metal repair. Is there a 201HT in development?
ANSWER: Yes. So, think about it this way: if our paste-grade materials are the 201 because they have ceramic in them or the 101 because they can be totally machined, then that’s fine. But if you or someone else comes to Chris and says, “Hey, this pump or this piece of process equipment is running at 300 degrees Fahrenheit,” you know, full.
Immersion—well, that’s not going to work for these other paste-grade materials, but the filler material, OK, that paste-grade material in this case might be the 101 XHT. I need to fill in the gaps with a plate bond. No matter what that is, 101 XHT, it will be the pace grade for that application. And then there’s 202203, which we’ve already talked about. It’s good for pumps and for regular operating temperatures. However, again, you tell me about this stripper. This other asset is working at high temperatures, between 350 and 300 degrees and 200 degrees. Oh, well, in this particular case, we’re going to go to that brushable ceramic coating that’s suitable for high temperature, and that’s going to be that tool, the 207 in that particular case.
QUESTION:
What’s the biggest mistake you see people make when applying the 200 series that ends up hurting performance?
ANSWER: Is this going to be surface prep? I mean, you know, the good thing is that it has to be it, right? We constantly attempt to cut shortcuts to get it back into service as soon as possible. Also, it might not have been left to cure long enough. You know that downtime costs money, and it can cost a lot of money. We would like to have that back in use as soon as possible. Tell us that this has to hold on for a few more months until we get to a shutdown because we. You probably have a substance that would work better for that. Sure, if you need it that quickly. But we have to execute the steps if you want a service life of 10, 15, or 20 years. We have to do it, right? So that’s going to be a rough blast. Making the sharp edges less sharp. All those places where, you know, coatings have failed in the past. This technique is going to make coatings fail. That’s because we attempt to get things done quickly.
Each of our coatings, each of our materials. They have a technical data sheet that goes step by step, and it says, “For best results, here’s what we recommend.”
Chris said that a client had a waste pump and that it was kept hot where it was pumping from. We had sold the supplies to it, which were actually the 300 series, 301 and 302, to fix a segment of the pipe in the beginning. At the beginning of the pipe, the flare temperature was much greater than the flare, like the temperature in the middle of the pipe. So it didn’t really fail, but it didn’t do what they thought it would do. And I guess we ended up selling them some 101 XHT for that job since there were only a few pinholes in the sewage pipe and they said, “Hey, we’re going to replace this in two years.” So we just need something that will keep it from leaking today.
QUESTION:
How realistic are these repairs to perform in the field versus in a shop environment?
ANSWER: It’s going to be harder in a field, right? Because you’re limited, you know, the temps around you might be different, right? You know, and everything else, but is it possible to accomplish it 100%? Of course. Yes. So, once again, please let us know what your limits are and where you are. For example, if you’re in a sump, we can warm it up and do all sorts of things. We’ll do our best to give you the best advice for that specific application and make it as successful as possible for us.
