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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.

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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 customers and others who use Aquamatic stager controls in their water treatment equipment. Res-Kem uses Aquamatic Stager Controls for many of the systems we manufacture. Stager controls are used to


Triple Softener System for Steam Heat Peaking Plant Sized for 750 gpm Flow >

Here is another example of number of the industrial, commercial, residential, and/or residential water treatment systems being designed, assembled, shipped and installed by Res-Kem engineers, pipefitters, and/or contractors within in the past few months. A Boston steam heating company needed to replace their aging Permutit triple softening system. These units, with Permutit multiport valves, had


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, commercial and residential customers throughout the US. As a recent example, on November 20 we shipped a triple sand filter to a customer on the California/Arizona border. With precise


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 and rinse stages. To repair the valve, Res-Kem service personnel would need to replace or rebuild the backwash outlet port and rinse outlet port. The Analysis: The Res-Kem service manager noted


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-known university, Res-Kem Corp, and a mechanical contractor yielded the best system for the money. These savings substantially improved the return on investment. This was accomplished without making any compromises on the


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 steel vessels for our industrial water softeners. We currently have old stainless steel units we inherited from a sister plant. These tanks are corroded. What is Res-Kem’s position on buying stainless


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 steam traps, knowledge of the metallurgy of the steam/condensing equipment in the steam distribution system and in particular the pH of return condensate. When measuring pH in condensate, it


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 PFA-300 and PFA-400. The Purofine line of resins is uniform particle size (UPS). Dow did this a number of years ago when they introduced the Marathon grade of


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 customization of the regeneration cycle of the water softener. This flexibility requires that you know a little bit about the system and a simple calculation -“Brine Refill Time”. Although a simple calculation, “Brine


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 parts for multi-port valves including Solo®, Solomatic®, Bruner®, Brunermatic®, Permutit®, and Aquamatic®. We get questions like: Please quote the following.: AQUAMATIC valves with 6 ports total. 5 ports are 3″. One in the


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. Depending upon the resin type, cation, anion, or mixed bed, cost and length in service, it may make sense to sample the resin and test for parameters that can identify


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 Jersey Manufacturer $23,000 Annually by Kevin Preising. This paper details how the addition of an acid water neutralizer (5.5-6 pH) as a pre-treatment step to the Reverse Osmosis system saved over


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 carbon is smaller than the 830 activated carbon. The screens or the mesh sizes are different. The 12 mesh screen has 12 openings per square inch 12 across


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. Dow will not take orders for the current LE elements after May 30, but will honor any orders on the books even if shipment is not until the end of the


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 clothes from iron and manganese staining, plumbing fixtures and appliances from mineral deposit damage, and reduce household chemical usage. Your customer has spotting on their glassware, cloudiness on shower


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 we can assume the following: Municipal or City Treated water contains little or no contaminants that are harmful to drink; therefore, it is


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 they couldn’t get enough flow through their new condensate polisher. During the service visit, it was determined that the Deaerator and Condensate system was not being operated in accordance with Best Practices Procedures



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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.
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