Share this page

Pretreatment Solutions Blog

For over 9 years, Nalco Pretreatment Solutions has been presenting a unique perspective on the water industry, systems and technologies, from very technical applications information, to general business topics. Our overarching themes include Safety, Saving Energy, Saving Time, Saving Water, and how our Services, Systems and Replacement Parts achieve these goals. On a routine basis, we add information on our services, systems and replacement parts and show how they are important to your company.

VIEW List View Grid View Refresh Sort Order
Bacteria in RO System >
Question: “I am getting some bacteria coming out of my RO that I was not getting before. How can I clean the membranes.” Our Answer: You can use a pro...

What is an Empty Bed Contact Time (EBCT)? >
Question: We receive many questions on calculating the Empty Bed Contact Time as follows: “How do I calculate the “Empty Bed Contact Time” for s...

Why should I treat my boiler condensate? >
Question: Why should I treat my boiler condensate? Our Answer: The reason why to treat your boiler condensate is condensate systems always leak. Heat exchangers a...

My backwash flow rate is too high for my well and well pump >
A common design issue for sand filters, multi-media filters, greensand filters, arsenic removal units, etc. is the large difference between the backwash flow rate...

How Does a Softener Valve Nest Work? >
The “valvenest” for a water softener is made of a minimum of six valves. The easiest way to understand how the water and brine flows through the valve...

Problems with a Bruner(R) Softener Multi-Port Valve >
Here are some common problems we see with very old Bruner(R), Bruner-matic(R), and Culligan(R) Hi-Flo (TM) multi-port valves. A recent request for help prompted t...

Boiler Feed Water Flow Rate Requirements Chart >
Question: We received a request for proposal today for “a water treatment system to treat the water going into my dual 194 HP steam boilers”. Start of...

Ion Exchange Resin Equivalency Chart >
There are many different ion exchange resin manufacturers including Purolite, Dow, Sybron/Bayer, Thermax, Rohm and Haas and ResinTech. We are often asked to provi...

Condensate Polisher with All Stainless Steel Construction >
Last week, Res-Kem shipped a condensate polisher designed to treat an 80 gpm flow rate with a 390,000 grain capacity. The condensate polisher had an all stainless...

Aquamatic Valve and Repair Kit Selection >
Res-Kem receives many requests for replacement of GE® Aquamatic® valves and Aquamatic valve repair kits. Please contact us. We have many people that can help yo...

Water Softener in Steam Plant >
Last week, a triple industrial water softener designed and manufactured by Res-Kem was started up in a Cambridge, Massachusetts steam plant. The softener system h...

Solo and Solomatic Valves from Aquamatic >
Over many years most water treatment equipment manufacturers utilized various types of multiport valves for their water conditioning equipment, including water so...

Water Testing Services Offered >
Before purchasing any water treatment equipment, the first piece of information a person should obtain is a water analysis. The challenge is you want a quick, ind...

Aquamatic Valve Selection and Pricing >
A common inquiry we receive at Res-Kem is a customer looking for a price and delivery on an Aquamatic Valve. We, in turn, ask the customer the following: What kin...

Condensate Polisher Vessel Materials of Construction >
We often receive the following question about the materials of construction of condensate polisher vessels. Question: We’re considering a condensate polishe...

How to Correctly Size a Sodium Cycle IX Condensate Polisher >
Problem: Customer Can’t Get Enough Flow through Condensate Polisher => How to Correctly Size a Condensate Polisher Solution: Customer called to state the...

Ion Exchange Resin Disposal >
Recently a customer asked us what to do about getting rid of the old resin after replacing it with new. This is a common question we get all the time. In general ...

Water Softener Is Not Producing Soft Water >
Problem: Your customer’s water softener is not producing soft water. The brine tank may be filling with water. Symptoms: A water softener is used to protect...

FILMTECTM BW30LE-440 and BW30LE-4040 RO Elements to be Discontinued >
The Dow Chemical Company recently sent a discontinuation notice for the FILMTEC BW30LE-440 and BW30LE-4040 which have been an industry standard for many years. Do...

Activated Carbon: Mesh Size >
We are often questioned about the differences between 1240 (12 by 40) mesh activated carbon and 830 (8 by 30) mesh activated carbon. The 1240 mesh activated carbo...

Water Neutralization Saves $23,000 Annually >
Res-Kem has published another white paper on water treatment. This next one is entitled Bucking the Industry Trend… Simple Change to Water System Saves New Jers...

Type II Anion vs Type I Anion: Ion Exchange Resin Analysis Yields Regeneration Savings >
Res-Kem is a supplier of ion exchange resins from several vendors including Purolite. Res-Kem is often asked to diagnose a potential ion exchange resin problem. D...

Parts for Solo, Solomatic, Bruner, Brunermatic, Permutit, Aquamatic, Culligan HiFlow Multiport Valves & Others >
Routinely, Res-Kem receives requests for quotes for water treatment systems and their replacement parts. One area that frequently needs explanation is replacement...

Setting Brine Tank Refill Time on Fleck Softener Valve >
The Pentair® Fleck® multi-port softener valve controllers, electronic versions SE, XT, XTR and SXT and non-electronic versions, are very flexible allowing for c...

Uniform Particle Size Ion Exchange Resins >
We received notice today that Purolite Ion Exchange Company will no longer be selling the anion resins, A-300 and A-400. These resins will be replaced by Purofine...

How to Measure pH Accurately in Steam Condensate >
Keeping within ASME guidelines for total iron in boiler feedwater below 0.1 ppm and total copper below 0.05 ppm copper requires attention to the maintenance of st...

Stainless Steel vs Lined Carbon Steel Vessels for Industrial Water Softeners >
Recently we received the following question from a prospective customer. Question: We are trying to decide whether to purchase stainless steels or lined carbon st...

Condensate Polisher Savings of 23% Realized Through Value Engineering >
The white paper, Condensate Polisher Savings of 23% Realized Through Value Engineering, shows how a value engineering team comprised of personnel from a well-know...

Dealkalizer Control Upgrade >
The Problem: A seafood processing plant called Res-Kem Corp to service their Brunermatic Dealkalizer. Their problem was of water running to drain during backwash ...

Triple Sand Filters Shipped and Installed Treat Sized for Peak Flow of 1000 gpm >
It has been a very, very busy couple of months at Res-Kem. Systems of all sizes have been designed, built, shipped, and installed for industrial, municipal, comme...

Triple Softener System for Steam Heat Peaking Plant Sized for 750 gpm Flow >
Here is another example of number of the industrial and/or commercial water treatment systems being designed, assembled, shipped and installed by Res-Kem engineer...

Aquamatic Stager Controls Information for GE/Osmonics >
Res-Kem has a significant amount of information on Aquamatic Stager Controls on this website. We wanted to make the information more easily accessible for our cus...

A200 Stager Control from Aquamatic Discontinued >
Soon after we completed changes to our website, discussed in our previous blog post, a discontinuation notice was Res-Kem just received in the mail from Aquamatic...

Aquamatic Valve & Control Lines Discontinued >
In addition to the announcement of the A200 series impulse control stager being discontinued, the letter from Pentair has other Aquamatic discontinuations. The fo...

Water Analysis Article >
I came across an excellent article in an old issue of Water Conditioning & Purification magazine entitled “Making Sense of an Incomplete Water Analysis&...

Condensate Polishers Shipped for Local University >
Last month, Res-Kem shipped a quadruple condensate polisher system to a local university. The condensate polishers are used to treat the water in the condensate l...

Resin Traps-Insurance for Industrial Water Systems >
Recently, Res-Kem published a white paper entitled “Inexpensive Insurance for Water Treatment Systems-Resin Traps” by Ron Madden. In this white paper,...

Industrial Water Softener Maintenance >
Res-Kem Corp. and our sister company General Water Services offer preventative maintenance contracts for customers here in the Mid-Atlantic region. I thought it m...

Pentair Fleck Electronic Timers >
Fleck has been moving quickly with upgrades to their electronic timers, which has created confusion over which is the latest one and which valves accept which tim...

Dealkalizer Performance Calculations >
We recently had questions about a perceived problem with a dealkalizer. This customer believed the capacity of the dealkalizer was lower than originally specified...

Stainless Steel Condensate Polisher with Bray Valves >
Res-Kem just completed another condensate polisher manufactured in stainless steel. This system uses our standard design with optional butterfly valves. The vesse...

Triple Greensand Plus Filter for Iron and Manganese Removal >
A triple Greensand Plus filter for iron and manganese removal was assembled and shipped today. This skid-mounted system will be installed to treat the water for a...

Custom Manual Water Softeners Shipped >
Last week, we shipped two custom water softeners. The customer was using the softeners to treat the water feeding plant safety showers. Res-Kem has the flexibilit...

Industrial Water Softener Skid-Mounted Shipped >
I try to keep up with our shipments, but with all the systems going out recently, I missed posting this dual tank industrial water softener out about two weeks ag...

Softener Service at Power Plant in New Jersey >
After reviewing our blog posts over the past 4+ years, I realized we have not talked much about our site service team. Our normal service area is in New Jersey, E...

Economics of Condensate Polishing >
On August 25, 2010, Res-Kem’s Kevin Preising will make a presentation entitled “Reuse It – Don’t Lose It! The Economics of Condensate Polishing...

Presentation on Condensate Polisher ROI >
As I alerted in a previous post, Kevin Preising of Res-Kem gave a webcast entitled “Reuse It or Lose It – The Economics of Condensate Polishing”...

Condensate Polisher ROI Presentation >
Reuse It – Don’t Lose It! The Economics of Condensate Polishing was presented at the GlobalSpec Industrial Processing virtual tradeshow on August 25, 2010. It...

200gpm Condensate Polisher for Major Chemical Company >
Res-Kem will be shipping a 200 gpm condensate polisher for a large chemical company later this week. Using our standard all stainless steel condensate polisher de...

Corroding Condensate Polishers >
I have written several posts about Res-Kem’s reasons for manufacturing our condensate polishers in stainless steel. Here are two lessons why this is importa...

Condensate Polisher Shipped to a Virginia University >
This past month, we have built and sent another condensate polisher to a major university in Virginia. This stainless steel system with carbon steel piping is des...

GlobalSpec Condensate Polisher Presentation Archive >
GlobalSpec now has easier access to presentation archives from their Virtual tradeshows. Here is the presentation Kevin Preising gave at the “Industrial Pro...

Replacing Pentair Fleck Drive Motors or “HOW TO GET YOUR SPARK ON” >
A field service person recently found that 24 volts and 120 volts don’t mix. The hard way. Field service people should take great care to realize this when ...

Pentair NXT Electronics to the Rescue to a Field Customization Catastrophe >
Question: Recently, a customer called Res-Kem looking for assistance with troublesome Fleck 2900 valves at a car wash. The system was a hodge podge of “borr...

Activated Carbon-“That Old Black Magic” >
Activated carbon is an amazing product. Its ability to purify and remove contaminants seems limitless. However, few people know what activated carbon really is or...

AquaMatic Valves-Normally Open or Normally Closed…That is the Question >
One of the most confusing concepts of Aquamatic Valves is trying to determine from the customer if the valve is normally open or normally closed. What seems to co...

Peroxide. Mother Natures Hamburger Helper >
As water treatment professionals we sometimes stumble upon jobs that are very troublesome. Those jobs almost always involve iron removal from ground water with ox...

300 gpm Industrial Water Softener Shipped to a Virginia University >
I nearly missed taking photos of a very nice looking quadruple tank industrial water softener that recently left our plant. As you can see, the system is being pr...

Common Cation Ion Exchange Resin Foulants >
We are often asked to help with an ion exchange system that no longer has the same run length as when it was new. Typically, this is the result of either reversib...

Trailer & Skid Mounted Mobile Water Treatment Systems Available >
Res-Kem, in association with our parent company, Nalco, now offers many different mobile water treatment system options. Whether you need supplemental water for s...

Fleck Valved Multiple Tanks -“What’s Your System Number?” >
The Problem: Many water treatment end users can wind up inheriting an orphaned treatment system. Usually it was part of a package supplied by a car wash or a boil...

Ion Exchange Resin Testing & Analysis Services >
Test your ion exchange resin to monitor and maintain your water treatment systems such as softeners, dealkalizers, condensate polishers, deionizers or demineraliz...

Common Anion Resin Foulants >
In a previous blog, we discussed common cation resin foulants. Here are some typical issues that we see with anion resin. Organics: Surface waters, such as rivers...

Condensate Polisher Shipped to Arkansas >
We shipped another condensate polishing system last month. This dual tank unit was shipped to a government facility in Arkansas.    Here are the key featur...

Composite Fiberglass Softeners Versus Lined Carbon Steel Softeners >
Here are a few pro’s and con’s for a lined carbon steel softener option and a composite fiberglass softener system. Advantages of carbon steel lined s...

Ultra Filtration – The Membrane Problem Solver >
There are very few innovations in the water treatment market these days. Sure the electronic controls have gotten more intuitive and compact, that is about it. Io...

Condensate Polishing System Shipped to University in Massachusetts >
A triple all stainless steel condensate polisher was shipped to a university in Cambridge, Massachusetts.  The system is designed to treat 445 gpm of condensate...

Water Sampling a Critical Step in Water Equipment Selection >
For our wholesale equipment customers who treat well water, we offer a very basic water analysis. Ultimately, the success of the water treatment starts with prope...

3D CAD Drawings for Condensate Polishers for University in Massachusetts >
In order to speed installation of the condensate polishers we recently shipped to Massachusetts, Res-Kem was asked to provide 3D CAD files for the condensate pol...

Reduce Your Backwash Flow or Lament “Why is my ion exchange resin in the drain?” >
It is that time of year.  You must reduce your backwash flow in the Fall or you will find your ion exchange resin in the drain or waste treatment plant. Why do...

Validatable Water System for New Jersey Pharmaceutical Company Shipped >
We were recently asked to provide a DI water system for a central NJ Pharmaceutical company. They required a small amount of water for a batching operation, 50 ...

I Can’t Believe It’s Not A Water Sample! >
Holy Moses! It wasn’t 1 week after my last blog on October 28th 2011 about receiving water sample in old pickle jars when I get a water sample in an used ma...

Water Softener Shipped to Food Flavorings Company in New Jersey >
Res-Kem recently shipped an industrial water softener to a food flavorings plant in southern New Jersey.  The water treated by the water softener is used to make...

Condensate Polisher Ready for Shipment to Chemical Plant in Louisiana >
Res-Kem will be shipping a condensate polisher to a chemical plant in Louisiana in a two days.  This system will be used to treat condensate to save water treatm...

Condensate Polishing & Maintaining Quality Boiler Water >
Maintaining proper boiler water quality can be both costly and complicated when faced with navigating ASME boiler water guidelines. One cost effective solution is...

Elliptical Bolt & Yoke Manways >
Res-Kem is a leading supplier of elliptical yoke and bolt manways for personnel access to pressure vessels. Res-Kem offers various sizes of these complete manhole...

New Two Bed Demineralizer Technical Bulletins >
Res-Kem has a complete 2-Bed demineralizer product line designed for industrial water production.  The standard tank sizes range from 18″ to 96″.  ...

Q&A on Condensate Polishers with Res-Kem’s Kevin Preising >
While dirty condensate clean-up can be an energy buster in most processing plants, one cost effective solution is to polish contaminated condensate for re-use. Co...

Three Duplex 80 gpm Multi-Media Filters Ready for Shipment >
Res-Kem is has delivered 20 of the 40 customized, duplex multi-media filters for mobile enhanced oil recovery trailers. The Res-Kem multi-media filters are sized ...

400 gpm Multi-Media Filters Shipped to Brewery in Pennsylvania >
Res-Kem shipped a dual alternating multi-media to a brewery in northeastern Pennsylvania.  The each multi-media vessel has a design flow rate of 400 gpm and a...

Water Softener vs. Condensate Polisher – Knowing the Differences Can Help you “Get Greener” >
Many companies are on a constant quest to run their business in the most energy-conscious, money-saving way possible. For those whose operations involve a low-pre...

Downloadable Catalog of Water Treatment Equipment Updated >
For 2012, we updated our downloadable industrial water treatment catalog.  (Given the number of equipment choices we provide, the catalog file is very large, so...

DI System Shipping to Washington Chemical Plant >
Shipping today is a two bed (cation ion exchange tank followed by an anion ion exchange tank) demineralizer for a chemical plant in Washington State. This unit is...

Chloramine Removal With Catalytic Carbon >
Is your carbon under attack? Have you chosen the correct carbon for chloramine removal? What carbon makes the most effective final barrier against chloramines?  ...

Improving Efficiency of Water Softeners at a Hospital >
A customer found they could reduce the salt and water costs of regeneration by 63% by having our service person diagnose the problems they were having and make ch...

Dealkalizer Shipped to University in Massachusetts >
A triple dealkalizer was shipped this week is the last major piece of equipment for a major steam boiler upgrade at a university in Cambridge, Massachusetts whic...

Iron and Manganese Removal Filter Shipped to Westchester County HQ >
Res-Kem recently shipped a 52 gpm dual tank greensand filter to a Westchester County New York corporate headquarters campus.  This filter uses greensand to remov...

Greensand Filters Shipped to Western PA Water Plant >
A western Pennsylvania, small private water utility, recently received four greensand filters to replace the filters that were failing.  Unable to get the orig...

Amazing Craftsmanship of Condensate Polisher from Res-Kem >
I need to acknowledge the excellent, American craftsmanship which goes into our condensate polishers!  It may be the engineer in me, because this is an amazing...

Second Condensate Polishing System Shipping to a North Carolina University >
Res-Kem is shipping the second of two condensate polishing systems to a leading private university in North Carolina next week.  This is the second of two sys...

Industrial Water Softener Shipped to Repeat Food Flavorings Customer in New Jersey >
Res-Kem recently shipped a second 84 inch industrial water softener to the same food flavorings plant in southern New Jersey. The water treated by the water soft...

Rental Condensate Polishers Now Available >
Skid-Mounted, Rental Condensate Polishers are available for deployment with preconfigured systems in single, double, triple and quadruple module deisgns to treat...

Siemens Selling Water Treatment Business >
The big news in the water treatment industry for this past week has been Siemens’ announcement to sell the water treatment equipment and...

Temporary Exchange Softeners for Unplanned Equipment Repairs >
Temporary, skid mounted softeners can get you back up and running when unplanned repairs are required to your in-house zeolite softeners.   Depending on the ex...

Naturally Occurring Radioactive Material in Your Water >
NORM means Naturally Occurring Radioactive Material and TENORM stands for Technically Enhanced Naturally Occurring Radioactive Material.   The USEPA states R...

Ultrapure Water System Starting Up at Nanotechnology Center in Philadelphia >
Res-Kem supplied, to a new nanotechnology center in Philadelphia, an ultrapure water system. The start up will commence this Monday. The system is designed to...

Mighty Little Chemical Pump-Stenner ECON FP >
  What fits in the palm of your hand an can pump up to 30 GDP at 80 psi?  The new Stenner ECON FP pump!   The ECON FP is an extremely versatile chemical pump....

Condensate Polishing System Shipped to University in Rhode Island >
A condensate polisher was shipped last week to a university in Rhode island to treat their steam condensate to save energy, reduce water usage and reduce water tr...

Water Softener Shipped to Hawaiian Resort Hotel >
A water softener was shipped to a luxury resort hotel on Maui.  The system will treat the water for the hotel’s laundry. Hot Water Softener with Stainless ...

Condensate Polisher Shipped to New Jersey University >
Last week, Res-Kem shipped a condensate polisher to a New Jersey university.  This condensate polisher will be installed as part of a new onsite power production...


How Can We Help?
Looking to service, replace, expand, or improve your water pretreatment system? Need supplies or replacement parts for your pretreatment water equipment? Let Nalco PTS help you find what you're looking for or contact Nalco for further assistance with all of your water pretreatment system needs.
About Pretreatment Solutions
Nalco Pretreatment Solutions (PTS) is a leading manufacturer and supplier of services, systems and supplies for industrial and commercial water pretreatment systems for treating process water, product water, boiler pretreatment, and drinking water.
Privacy Policy
© 2016 Nalco
An Ecolab Company