Aquamatic Stager Controls Information for GE/Osmonics

Res-Kem added a significant amount of information on Aquamatic Stager Controls to our website including Product Specifications, Manuals and Ordering Guides. 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 automatically control softeners, dealkalizers, sand filters, multi-media filters, cation and anion deionizers. Also, we use these same stager controls, with a valve nest, to retrofit old Permutit, and Brunermatic multiport valves. Also, given our system expertise, we service these units in the field.

Aquamatic Stager Controls:

Res-Kem uses Aquamatic Stager Controls for many of the systems we manufacture. As the name implies, it is comprised of an Aquamatic Stager and an Aquamatic Control. Res-Kem uses Aquamatic valves with a variety of stager control combinations to automate the operation and/or regeneration of valve nest type water softeners and filters. Aquamatic Stager Controls are used to automatically control softeners, dealkalizers, sand filters, multi-media filters, cation and anion deionizers. These same stager controls can be used with virtually any other valve manufacturer with pneumatic actuated valves ONLY if their actuators are air/spring. These manufacturers include Keystone, Bray, George Fisher +GF+, Hayward, and Asahi. Also, we use these same stager controls, with a valve nest, to retrofit old Permutit, and Brunermatic multiport valves.

Aquamatic 962 Stager Controls:
The AquaMatic 962 stager controls combine an AquaMatic stager with an Autotrol 962 series electronic control, mounted and prewired in a NEMA-rated enclosure. When combined with a flow meter, the series 962 electronic controls provide sophisticated, demand-based water conditioning by monitoring the amount of water used. Time-based and/or external signal initiation is also available as a standard feature.

Aquamatic A100 Stager Controls:
This series of AquaMatic controls combines an electromechanical timer with a stager. The A100 series initiates a regeneration based on a time set on the built-in time clock.

Aquamatic A200 Stager Controls:
This series of AquaMatic controls combines an electromechanical timer with a stager. The A200 series initiates a regeneration when a signal is received from a water meter, sensor, pressure differential switch, push button or other remote device.

Aquamatic 7000A Programmable Regeneration Controller (DISCONTINUED):
These units are no longer sold. Through some careful engineering, the 7000A controller can be replaced with a Aquamatic 962 Stager Control. The Aquamatic 7000A was an electronic programmable regeneration designed to control the regeneration of filters and ion exchange processes. The 7000A was used in combination with an Aquamatic 48 Series Stager, Aquamatic 51 Series Stager, or Aquamatic 58 Series Stager.

Aquamatic Stager:

Added are product specifications on Aquamatic Stagers. A stager is a motor-driven rotary multiport pilot valve, which is used to control a set of individual diaphragm valves in a predefined sequence.

There are five stager designs available:

Aquamatic Series 48 brass stager with six ports. The 48 stager can control typical softener or filter systems as well as sequential backwash filters.

Aquamatic Series 51 brass stagers with eight ports. Used for more complex systems such as non-standard softeners, twin alternating softeners or filters.

Aquamatic Series 96 brass stagers with eight ports. Used for more complex systems such as non-standard softeners, twin alternating softeners or filters.
The 96 stager design is similar to that of the 51, but is rated for 250 psi (17 bar) and used for high pressure systems.

Aquamatic Series 58 PVC stager with sixteen ports. Used for more complex systems such as non-standard softeners, twin alternating softeners or filters.

Aquamatic Series 59 brass stager with sixteen ports. Used for more complex systems such as non-standard softeners, twin alternating softeners or filters.

Given our expertise building systems with Aquamatic Stager Controls, we can help you select the correct parts, select/troubleshoot stager controls or service stager in the field.

Water Analysis Could Have Saved $57,000

In the white paper, "A $150 Water Analysis Could Have Saved $57,000 in Capital and RO Cleaning Costs" by Joseph Urbans-Sales Engineer at Res-Kem Corp., he details how a water analysis is extremely important in the design phase of a water treatment plant design.

Summary:
The paper shows after spending $52,000 in capital and installation for water treatment equipment, technical and service personnel from Res-Kem Corp were called in to diagnose a major problem with a three week old reverse osmosis (RO) system specified, built, and installed by others. Upon investigation, an inlet water analysis may never have been done, or at least no one could produce the analysis used to originally size the plant. It appears the engineering firm sized and designed this project without one.

The Costs:
If the system had been designed correctly from the start, Res-Kem conservatively estimates the savings to be $57,000:

Total capital and installation costs of original system $52,000

Membrane cleaning costs of $5,000

In addition, if the RO membranes cannot be cleaned, the cost will be $15,000 for new membranes plus installation service.

Frozen Ion Exchange Resin

During the winter months here in the Northeast we are often asked about how to handle frozen ion exchange resin. The best way to avoid frozen resin is to make sure the ion exchange resin is shipped in a climate controlled reefer type van. There is usually additional expense involved with use of this truck but it is an option to consider if you are located in a cold climate and need to install the resin upon arrival at your plant.

How can I avoid freezing ion exchange resins?
You can avoid the frozen ion exchange scenario by making sure your vendor doesn't ship on a Friday. Shipments that go out on Friday often will sit over the weekend allowing enough time for the resin to freeze. That's not to say the resin wouldn't freeze over night if the vendor shipped on a Monday and delivered on Wednesday. You just cut the odds of having frozen resin delivered.

What do you do if the resin is frozen?
On Page 5 of a Purolite brochure addressing transportation and packaging of ion exchange resins, Purolite states:

"Although it has been found that Purolite Resins will withstand temperatures as low as -40 degC, (-40 degF), successive thawing and freezing may damage the product, and/or the packaging. Hence it is recommended that the resins are stored above 0 degC, (32 degF). If for any reason resin becomes frozen it should be left to thaw out gradually. No attempt should ever be made to free frozen mechanically. If it is anticipated that it will be necessary to handle resin at sub-zero temperatures, the resin may be conditioned with saturated brine prior to storage. During transportation of resins precautions should be taken to avoid the extremes of temperatures as outlined previously. If product becomes frozen during transportation, thawing should take place gradually, with out any physical interference."

So if you have frozen resin, put it in a sunny spot and let it thaw, don't go at it with an ice pick!

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 reached the end of their life.


Res-Kem was selected based upon the recommendation of a sister company in Cambridge, MA which had a Res-Kem triple softening plant at their facility. Since the Permutit multiport valves are no longer commercially available, the Res-Kem design used Aquamatic valves instead of the Permutit valves. Also, it appears the size of the existing Permutit units was too large for the plant flow requirements. Res-Kem used a peak design flow from the softeners of 750 gpm. Upon careful review and competitive bidding process, Res-Kem was selected to provide the replacement system.

Several design changes from the standard Res-Kem industrial softener design were needed to meet the unique requirements of this peaking plant. In particular, the valves needed to be changed from our standard normally open (air to close) actuation to normally closed (air to open) actuation. This was done so the valves will fail closed in the event of loss of air pressure. Normally air pressure is used to stop the water flow during periods of downtime. In this case, when the plant is not being used to generate steam, virtually all power is turned off including tha air compressors to save energy.



With precise drawings by Res-Kem engineers, accurate assembly by Res-Kem pipefitters, and excellent coordination with the site mechanical contractor, the water softeners are being rapidly installed. Commissioning is scheduled for the week of December 15, 2008 only 5 business days from shipment! When our start-up engineer visits for operator training, we will post a picture of the installation.

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 drawings by Res-Kem engineers, accurate assembly by Res-Kem pipefitters, and excellent coordination with the site water and wastewater contractor, the sand filters were rapidly installed and commissioned by December 8, 2008! Please note, there was shipping time of 3 days and a Thanksgiving holiday in between!



The triple 84-inch diameter sand filtration system is sized to treat a peak flow of 1000 gpm. The sand filters are used to treat all of the potable water going to an 823,000 gallon reservoir tank after chlorination. Most of the storage capacity is for fire water requirements.