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, and Aquamatic valves. All external piping was a combination of welded and flanged stainless steel. Each system has an Aquamatic 962 controller to operate the valves during the backwash and regeneration cycle. The regeneration and backwash cycles are initiated by a differential pressure switch.

The local Res-Kem representative sold and installed the system at the university. The new system replaced a twin condensate polisher that had reached the end of its life.

The design flow rate is: 450 gpm
The peak flow rate is: 600 gpm
As stated above, the regeneration is initiated by a DP Switch.


The qualification process by the university was very rigorous. First university personnel visited out manufacturing facility in Aston, PA to see a similar system being built in our assembly facility. Afterwards, university personnel visited a local customer with a water softener and water dealkalizer. After we were qualified, our engineers worked with the site personnel to modify our standard design to fit the site's requirements.

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 March 2, 2009. Contact Res-Kem if you need help finding a potential replacement.

Discontinued Aquamatic Valve & Control Lines:
Product Family: V82 Series
Product Type: Diaphragm valves
Description: High pressure brass line
Potential Replacement: V46 Series

Product Family:V44 Series
Product Type: Diaphragm valves
Description: Iron and brass isolated bonnet line
Potential Replacement: V42 Series, K55 Series

Product Family: 59 Series
Product Type: Stager
Description: 16 port brass stager line
Potential Replacement: 58 Series

Product Family: 96 Series
Product Type: Stager
Description: 8 port high pressure line

Discontinued Aquamatic Valve & Control Options:
Description: Drill and tap Options 5(all four bosses) and 7 (bosses #1 and #3) on K52 Series and K53 Series valves
Potential Replacement: Drill and tap Options 1-4, 6

Description: FKM (Viton) diaphragm on K53 Series
Potential Replacement: Buna-N diaphragm: K52 series FKM diaphragm

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 lengthy time on the market, (these products) have experienced low demand and declining sales in recent years. As a result, Pentair is making the difficult decision to eliminate these lines so it may focus on growing its core Aquamatic Valve and Control business."

Possible Solution:
A potential replacement could be the 962 Stager Control series from Aquamatic. If you contact Res-Kem we can help you determine if it will work for your application and how it may need to be configured to work.

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.