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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...

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, y...

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...

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...

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 industri...

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...

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...

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 i...

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 Th...

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....

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...

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...

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...

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?  ...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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,...

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...

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 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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...


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.
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