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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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Pentair AquaMatic Valve and Controller Discontinuation Notice >

After over 80 years in the market, we received a discontinuation notice from the manufacturer of AquaMatic valves and controllers. There are two important dates to remember: March 30, 2016 – Last day to place orders for new AquaMatic valves and controllers May 30, 2016 – Last shipping day for new AquaMatic valves and controllers Please look


Dow Filmtec RO Elements Added to eCommerce >

18 different Dow Filmtec 8-inch and 4-inch RO and NF (nano-filtration) elements were added to the Nalco eCommerce site.   In addition to Filmtec RO membranes, you can purchase most of the parts you need to properly maintain water treatment systems using our ecommerce site using a credit card or P-card. Remember to add this link


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


Pall Filters added to e-Commerce Site >

Seventy (70) Pall filters have been added to the Nalco eCommerce site. Now it is easy to find and purchase most of the Pall filters you use! If you know the Pall, Ecolab or Nalco part number, you should be able to find the filter you need. If not, use our new filtered searching feature to get


Water Treatment Ecommerce Site Open For Business >

Our new E-commerce Web Site for water treatment, http://reskem.ecolab.com is ready to accept orders for many of the replacement parts you need for your industrial water treatment system!  As a Guest user, you will have access to all of the parts at list price.  You can become a Registered User by contacting Res-Kem. In future posts, I will explain


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


Customized Greensand Filter for Brewery Prepared for Shipping >

With factory testing completed, Res-Kem’s greensand filter with several advanced features is ready for shipment to a local brewery.  Because the water is integral to production of their beer, this expanding brewery needed features which are not typical for a greensand filter: Allen Bradley CompactLogix PLC with Ethernet gateway to communicate with the central plant


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.


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 water systems service business.  Bloomberg announcement states that the Siemens Water Technologies division includes wastewater, municipal and industrial water purification services and membrane filtration systems.  Most of these technologies were parts of the former US Filter


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 piece of work!  My kudos go to: Tony, our Lead Design Engineer who had to design the vessel, the vessel penetrations, pad flanges, internal clips and its internals with amazing accuracy (and I am certain a few


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 original manufacturer to provide new, duplicate units, our customer found our website.  Because of State regulations, the systems and their operation needed to be as close to the original as possible, otherwise new permits would


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?   Why use chloramination?  Let’s face it everyone, they’re not making any more fresh water on this planet. Our fresh water is under continuous attack from man made substances and biological


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


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


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 reversible or non-reversible fouling of the cation and/or anion ion exchange resin. These are some of the common foulants: Iron: Clear Water Iron (ferrous


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


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 how it’s manufactured. One of my goto articles on the subject, written by Calgon Carbon, is “Activated Carbon. What is it, How Does it Work“. What is activated carbon made


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


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 design, the system was customized to meet the customer’s specific requirements. The tanks are ASME code tanks with a design pressure of 125 psig. All piping is welded stainless steel


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


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


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


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


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


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 provide a resin that is the closest equivalent to the ion exchange resin they have or need to purchase. This is a Resin Equivalency list we use internally of the most common ion exchange


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 this posting. Problem: I have an old Bruner softener with a large cast iron multi-port valve. Here are some of the issues: Periodically my brine tank overflows My runs seem to


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 valvenest is to see this picture. The top flange attaches to the upper side port of the softener tank. This in turn connects to the top distributor. The


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 sizing my carbon bed?” Our Answer: Calculating the Empty Bed Contact Time, EBCT, is fairly easy to do once you know that the EBCT has the units of time, and usually



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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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