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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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Discontinued DOW FILMTEC™ RO and Nanofiltration Products >

While working on adding Dow Filmtec membranes to the Nalco eCommerce site, I came across this interesting list of discontinued FILMTEC™  RO and NF products on the Dow Filmtec website.  Before you consider substituting an older Reverse Osmosis or Nanofiltration membrane for a new version, contact us to run a projection on your system to determine if you will continue


Service RO-Water You Need, When You Need It >

When all you want to do is turn a valve and get high purity water with consistent quality and quantity for your process, Service RO from Nalco is the affordable choice. With your local Nalco service team, you have the experts with the specialized training required to maintain a reliable water system, so you don’t have


RO Membrane Cleaning-Offsite >

If you have an RO system, periodically you will need to clean your membranes. We can provide off-site membrane cleaning services that are designed to improve the performance and extend the useful life of your RO elements. Using our proprietary off-site membrane cleaning stations, strict protocol, automation, and specialty cleaning products, we can handle your


North Jersey Service Center Opens in Linden, NJ >

To serve our customers in North Jersey, Eastern New York and Long Island better, we opened our 10,000 sqft service center in Linden, NJ.  From this location, we will delivery our DI tanks using our own delivery trucks.  Also, we provide Break/Fix equipment service, Preventive Maintenance (PM) services, and Microbiological Control Programs for your industrial and


Selecting the Perfect Filter Cartridge >

Being a distributor of water treatment supplies, we are asked to provide filter cartridges. Most of the time, these requests will consist of: “Hey, I need a 5 micron 20″ long cartridge.” Sounds simple enough; however, there’s more to a filter cartridge than the just those two particular pieces of information. Below is an overview


Finally Available! – Stainless Steel Resin Traps >

After many requests, Res-Kem now has stainless steel resin traps available!  So, in addition to our standard PVC and CPVC resin traps, we now offer them in 304SS and 316SS. 304 Stainless Steel Traps Each Rated for 210 gpm Flow The end connections have Van Stone Flanges for maximum installation flexibility.  All stainless steel units


Calibration Services Offered for Thornton Products >

Res-Kem now offers calibration of Mettler-Toledo’s Thornton products including pH, ORP, and resistivity/conductivity probes.  These probes are used with Thornton M200, Thornton M300 and 770MAX monitors.   770MAX and M300 Thornton Meters Installed in a Customer’s Water Treatment Plant   Our calibration service coverage area is the mid-Atlantic and New England States.   For Additional Information: Contact us


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.    What makes this pump special? This one little pump can receive signals from either 24VAC, dry contact signal, or flow switch.


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 produce water with three different qualities to supply: 10 gpm to process cooling equipment 40 gpm to laboratory benches and humidification equipment 75 to 125 gpm to recirculation loop feeding process tools Ultrapure Water System


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 extent of the problems, repairs can take several weeks or longer.  Tanks are simply hooked up to your water source via cam-lock connections and 2″ industrial Goodall hose.  As the tanks exhaust, Res-Kem


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 remove dissolved and precipitated iron and manganese from the water coming from the local public water system. Dual 36″ Greensand Filters with Bray 31 Valves and Bray Series 93 Pneumatic Actuators Water


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. Condensate polishers use a simple ion exchange technology that is easy to operate, easy to maintain and economical to use – less make-up water is required which leads to lower chemical


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 assemblies or tank manhole covers, which can be used for industrial and commercial water treatment applications. They are the following: 11×15 12×16 14×18 18×24 Most of the manway requests we receive


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 sodium cycle condensate polishing. Simple to operate and maintain, condensate polishers have been proven to realize real savings relative to chemical and energy consumption and provide the ability to control corrosion transport


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 treatment chemical costs, identify process equipment leaks and will likely improve product quality of the chemicals they produce. What is the problem? The chemical plant uses steam


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 steam to sterilize the raw plant material prior to extraction and extract the flavoring.   The softener will be a replacement to an existing tank which has failed after 40 years


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 margarine container!   Water Sample Container Received by Res-Kem P-L-E-A-S-E!. My disclaimer: “results not guaranteed for accuracy due to improper sampling container” Ok, the


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 – 60 gallons per batch 3 to 5 batches per day. Their requirements were that the water would have to meet USP specifications and that the system


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 I need to reduce my backwash flow rate? If the backwash rate for an ion exchange system is set when the water is warm, the flow


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, streams, reservoirs, lakes, etc, can contain hundreds of PPM of natural and man-made organic matter. Natural organics are commonly formed from decaying vegetation. This decaying vegetation includes tannins,


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 demineralizer systems. You should have the resin analyzed on a yearly basis to check the quality and performance of the resin. Samples can be taken from the resin bed and sent to Res-Kem to


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 boiler treatment company. The situation becomes more confusing when there are multiple tanks with elaborate wiring and piping that resembles knotted intestines. Also, the owners manual


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 short-term shortages, temporary water while waiting for a new system to be delivered, or improved water quality due to a change in feedwater, we can provide the mobile options to meet your


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 oxidation. Oxidation is a tricky science. Your pH must be near neutral, but never above 8.2. High pH will cause the iron to create sludge. If you are using conventional air


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 confuse most customers when asked this question is how the valve functions on their system. For example, Res-Kem Water Softeners, for the most part, use a Normally


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 “borrowed” components. There was a Fleck 2900 analog valve system 9, Autotrol 2″ turbine meters, and a Autotrol 480 electronic controller. This set up was like someone putting a Ford


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 servicing/replacing Pentair Fleck valve drive motors commonly found on models 2750,2850,2900,3150, 3900. Here is the golden rule: If the timer controls are Electronic (NT, NXT, XTR, SXT)


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 important. What happened? Within the past two weeks, we have been contacted by two different facilities managers who purchased sodium cycle condensate polishers from companies other than Res-Kem. The tanks on their


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, Eastern Pennsylvania, Delaware, and Maryland. On a case-by-case basis we have gone substantially further. Situation: At a power plant in coastal New Jersey, a triple


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 timers. Is it ET, SE, XT, NT, NXT? By the time you read this there may be a more recent upgrade to the family of Fleck electronic timers. So,


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 might be helpful to go over our Preventative Maintenance procedures for a commercial or industrial water softener for those of you who maintain your own water softening equipment. For an industrial water


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, three examples demonstrate how resin traps act as inexpensive insurance for costly problems that can develop when ion exchange resin reaches downstream process areas, process equipment, or the product. Depending upon the plant or


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” by Frank DeSilva of ResinTech Inc. This article defines what the minimum required water analyses are for: Cationic Applications (hardness removal, metals removal, radium removal) Anionic Applications (sulfate removal, nitrate removal,


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 following Aquamatic Valve & Control Lines will be discontinued after March 13, 2009. Also, certain Aquamatic Valve & Control options will be discontinued after March 13, 2009. Orders can be placed until


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 about the A200 Stager Control. After March 13, 2009 the controller, also called an A200 Impluse Stager Control, will no longer be available. The reason given was “despite their


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


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


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


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


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 kind of Aquamatic valve is used on the equipment? Is the valve normally open, or is it normally closed? Does it have a limit stop or


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, independent test at an affordable price. While we can not vouch for it at this point, an employee may have found a reliable third party testing service for Pennsylvania


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 softeners, dealkalizers and filters. One of these valves were known as Solo(R) Valves and Solomatic(R) Valves manufactured by Aquamatic(R) Inc., now a part of GE Water. These Solo and Solomatic valves, once a staple


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 product known as Minncare® or Oxonia. Both are sanitizing agents made up of hydrogen peroxide and peracetic acid. Dilute to 50 – 100 ppm, pump through



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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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