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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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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


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


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


Teaching People What They Need >

My normal focus in this blog is water treatment.  I am going to take a tangent today because my favorite blogger, Seth Godin, had a very interesting post last week titled “Give the people what they want” and the next line was “…isn’t nearly as powerful as teaching people what they need.” His posts are always thought provoking


Condensate Polisher Shipped to Canada >

Recently, we shipped a sodium cycle condensate polisher to Ontario, Canada for a combined cycle power plant.  The system was constructed entirely of 304 stainless steel.   Company Combined Cycle Power plant Water Treatment Application Condensate Polisher to scavenge trace hardness and iron from returning condensate Savings and/or ROI Loss Prevention keeping heat transfer surfaces clean and


Combating Iron, Manganese, Sulfur with Media >

Commonly referred to as the Troublesome Trio, Iron, Manganese and Sulfur, although not a real health concern, will reap havoc on a plumbing system.  As little as 0.05ppm of Manganese will cause staining of plumbing fixtures.  Only 0.5 ppm of iron will cause staining.  And Sulfur?  P.U.!  Need I say more? To battle the Trio,


Condensate Polisher Shipped to Michigan >

A condensate polisher for a district heating plant in Michigan was shipped last week.  Dual Skid-Mounted Condensate Polisher for District Heating Plant in Michigan   Customer: Utility District Heating Water treatment application: Condensate Polisher to scavenge trace hardness and iron Expected savings: Loss prevention keeping heat transfer surfaces clean and reliable for years of trouble


3D Printed Model of Rental Condensate Polisher >

To speed up installation of our rental condensate polishers, we will provide a 3D CAD file as part of the documentation.  This is will insure the condensate polisher starts delivering energy, chemical and water savings as quickly as possible.  As a result of having the 3 D CAD model, we had some laser sintered models of the


Condensate Polisher Shipped to Specialized Salt Manufacturer >

Res-Kem recently shipped another condensate polisher to one of the largest manufacturers of specialized salts and minerals. Specialized Condensate Polisher with Unlined Carbon Steel Tankand Welded Schedule 80 Black Iron Piping Enduser Manufacturer of potash fertilizer, food grade salt, and food grade minerals General Water Treatment Application Polishing high temperature condensate Expected ROI Getting the


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


1.4 MILES of Wire Saved Through Innovative PLC Architecture >

… and over 800 electrical and 40 instrument air connections! The field wiring for our customer became very complex because they wanted verification that each of the twenty actuated valves is in the correct position.  Also, the system is pre-programmed to allow up to four additional greensand filter units through a HMI touchscreen. If the


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


10 Questions to Answer Before You Specify Water Treatment Equipment >

Many times per day, we are asked to provide a quote for a specific water treatment technology like RO, demineralization, water softening, filtration, etc.  At Res-Kem,  we like to take a step back and help you determine what equipment will cost effectively handle your water treatment issue.  Since there are so many choices and combinations


Water Softener Shipped to Luxury Hotel in Delaware >

Water softener for a new luxury hotel in Wilmington, Delaware was shipped from our Res-Kem Aston facility.  This system treats all the incoming Wilmington city water for the entire hotel including bathrooms, restaurant, etc.  With the special piping configuration, dual flowmeters and special Pentair NXT controller, the system operates in alternating, parallel or demand modes with simple programming changes.  150


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


Carbon and Multi-Media Filters Shipped to Eastern Pennsylvania Power Plant >

Res-Kem shipped a multi-media filter and a carbon filter as pretreatment to an RO system.  Previously, this coal-fired power plant purchased a softener from Res-Kem. Also, we supply DI service vessels for post-RO polishing.  The general system arrangement is: Well => Multi-Media Filter => Activated Carbon Filter => Softener => RO => Storage Tank =>


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 facility at the university operated by an independent energy development company.  They will produce power for the university under a DBOM (Design, Build, Operate, Maintain) agreement. Excess power produced


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 Steel Piping and Bray Butterfly Valves System Specifications:   Operating Temperature 140F water for laundry System Configuration Single hot water softener with automatic bypass Materials of Construction Carbon


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 treatment chemical usage. Res-Kem Dual Tank Condensate Polishers Designed to Treat a Maximum of 300 gpm   What is the Res-Kem water treatment application? Sodium cycle condensate polishing


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


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 condensate return for reuse as boiler feedwater. All wetted parts for Res-Kem Condensate Polishers are 316 stainless steel. Single units are rated for flows up to 210 gpm. Use multiple modules in parallel to treat


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 softener is used to make steam to sterilize the raw plant material prior to extraction and to extract the flavoring. The softener is the replacement to a second existing tank


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 systems sold to this same university in the past year and a half.  This system treats 400 gpm of dirty condensate. Res-Kem’s Dual 54 inch Sodium Cycle Cycle Condensate Polishers To improve


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


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


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 which included a new condensate polisher system Res-Kem provided, a deaerator and other major physical plant upgrades.  The months between the polisher shipment and the dealkalizer shipment were filled with


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 changes to the system. Situation: A hospital customer has a 20 cubic foot water softener used for domestic water.  The system was designed for run length of


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


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 a DI60072 and will be used in parallel with several other older systems currently installed at the same plant to increase treated water capacity. 150 gpm Demineralizer


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 please be patient during the download.) Res-Kem’s Industrial Water Treatment Equipment Catalog for 2012 In addition to the updated XL, CL and ML Series RO system bulletins, we have updated the two


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-pressure boiler system environment, investing in a condensate polisher is one of the easiest ways to “get greener” through energy efficiency and dollar savings. In most every boiler plant, cold water


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 peak flow rate of 510 gpm.  The system filters all the municipal water entering the plant for all applications including brewing.      Design Features: Two 84″ diameter ASME code vessels rated


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 to continuously produce 80 gpm of water to downstream equipment including steam generators.  The trailers generate steam which is injected into wells to recover more oil. The system started out as


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


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″.    Two-Bed Demineralizer withPVC Tank Coating and PVC Face Piping These two-bed deionizers are designed for fully or semi-automatic production of water with a conductivity of less than 10 micro-ohms and feature:   Flow rates


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


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


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 polishers.  Here are some screenshots of these drawings. Why use 3D CAD? Given the complexity of the installation, tight dimensions and tight timeline, the 3D drawing helps the mechanical contractors understand


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 and is replacing an existing unit which had reached the end of its life.  This is part of a major upgrade of the steam plant including the condensate polishers, a triple


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. Ion exchange hasn’t really made quantum leaps into this either. So before I depress my fellow colleagues and influence young people to seek another career path, there is one exciting


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 softener system: Lined carbon steel system has top man ways and side wall handholes. Having these access points to get to the resin bed and underdrain hub and lateral can


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 features of the polisher: The system has two, 36″ stainless steel, ASME-code tanks mounted on a skid to treat steam condensate. The condensate polisher incorporates Bray 31 series butterfly valves with 93


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


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


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 prepared for shipment and only two of the four tanks were available in this photo. System Details: The system has four 30″ water softener vessels commonly called


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


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 Processing” event in August of 2010 entitled “Reuse the energy – don’t lose it!” Why should I view the presentation?With fuel comprising 60-70% of the operating costs of a typical steam plant, dumping


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 designed to treat 175 gpm and designed to operate at 100 psig and 200 F. The system has dual ASME-code 36 inch diameter tanks. The piping is Schedule 80


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


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


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 is a rather long presentation so we posted in two pieces on YouTube. Abstract of Presentation: In today’s environment of economic pressure and high energy costs, engineers are constantly asked


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”. This excellent webcast was given at the GlobalSpec Industrial Processing virtual trade show on August 25 showing how a condensate polisher can pay for itself in 9.6 months! You


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” as part of the Industrial Processing on line tradeshow presented by GlobalSpec. Abstract of Presentation: In today’s environment of economic pressure and high energy costs, engineers are constantly asked to do more


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


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 ago. The system is a dual tank alternating, skid mounted, water softener, including interconnecting piping and isolation valves. GE Aquamatic composite diaphragm valves are used for


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 flexibility to take our standard industrial water softener designs and modify them to meet a specific customer’s requirements for virtually the same cost as our standard systems. For example:The plant


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 small community water system in the Poconos operated by a large private water utility company. The system operates in a parallel arrangement with three skid mounted, Greensand Plus


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 vessel is manufactured from 304L stainless steel with 100 psi ASME code construction. Pipe assemblies are welded Schedule 10 304L stainless steel piping. This single unit condensate polisher has an added feature of automatic


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 and was unhappy with its performance. The customer was regenerating this new system more often than they regenerated the older system. We reviewed the system design and operation and found the


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


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 loop, reducing water treatment chemical usage and reducing heat waste from excessive blowdown. The system is comprised of four individual ASME-code stainless steel tanks with stainless steel internals, face piping,


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


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


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


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


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 polisher in our boiler plant. Should the vessel be constructed of carbon steel or stainless steel? Answer: Over 75% of the condensate polishers that Res-Kem builds utilize stainless steel pressure vessels. If you use a


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 has an Allen Bradley PLC and PanelView 600 HMI for controlling the automated running and regeneration of the three softeners. Each of the 48 inch diameter x 72 inch straight-side vessels


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 steel construction including an ASME code stainless steel pressure vessel, stainless steel internals, stainless steel Aquamatic valves and face piping. Not shown is the brine tank used to


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 an Answer: The first thing we need to do is estimate the amount of water that will be used. The question is how? After you work in any


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


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 and the flow rate during normal operation. Depending upon the media used, the backwash flow rate can be 2X to 10X the service rate. Due to restrictions in the piping coming



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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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