According to the Certificate of Compliance:
“Only those products bearing the UL Listing Mark for the US and Canada should be considered as being covered by UL’s Listing and Follow-Up Service meeting the appropriate requirements for US and Canada.”

Robert Brown Associates’ president, Tom Halley stated, “We decided to pursue 3rd party certification, since it does provide a solid validation to our clients that our product is not just a cheap bit of junk, built in someone’s garage without a comprehensive plan.  These systems are a very integral part of a building’s utilities, and our clients need to be assured that they are built with safety and quality in mind.   They do operate 24/7, in providing water service to a building, and that’s a pretty important utility on anyone’s gauge.”

The certification program is a comprehensive program whereby UL engineers evaluate the product for compliance to industry standards for packaged pumping systems.  To apply for the UL certification, the company prepares written procedures for all aspects of how the pump system is constructed.  Drawings and system photographs are provided to complete the documentation.

After reviewing the application, a UL inspector inspected the entire system and components used in building the system. The inspector verifies that everything conforms to the UL requirements. This includes the components, welding procedures, and the devices that are used.

Sample UL Listed Component

Following the initial inspection, a UL inspector conducts regular unannounced visits to the facility to perform inspections. UL as a certifying agency are tasked with ensuring that the product continues to conform to the UL requirements. This is in part, a safety program, and verifies that the product is manufactured using UL approved components (motors, pumps, instrumentation, etc.).  If a component is used that is not UL approved, the company can be fined or forfeit the certification.

Control panel fabrication

Samples of our systems have been investigated by UL in accordance with the following standards:
•    UL 508 – Industrial Control Equipment
•    UL 508A – Industrial Control Panels
•    UL 778 – Motor-Operated Water Pumps
•    CSA C22.2 No. 14 Industrial Control Equipment
•    CSA C22.2 No. 108 – Liquid Pumps

Some purchasers of packaged pump systems require a third party certification label on the products supplied.  The purpose of the label is to assure customers of a third party evaluation, inspection program, and a certain level of quality and safety compliance.

There is not a current national requirement for 3rd party certification for packaged booster pump systems.  Local state and municipal authorities retain the rights to set their own requirements for what pumping products are acceptable.

UL is a global independent safety science company offering expertise across five key strategic businesses: Product Safety, Environment, Life & Health, Verification Services and Knowledge Services.

The Comcast Center is a 58-story, 975 feet (297 m) glass skyscraper located at 17th Street and John F. Kennedy Boulevard in Center City, Philadelphia, Pennsylvania. The tower is the tallest building in Philadelphia and Pennsylvania and is the fifteenth tallest building in the United States (tenth tallest by roof height), and the tallest building built in America outside of New York City or Chicago since 1993. The building is owned and operated by Liberty Property Trust/Commerz 1701 JFK Boulevard L.P.  (source: Wikipedia)

Building Domestic Water Systems

The domestic water for the building is delivered by two triplex variable speed booster pump systems, which were originally installed in 2007.  The triplex Low Zone System delivers a constant 250 psi for the first 34 floors and the high zone provides 485 psi delivered directly to floors 35-52 and roof cooling towers.

Each pump system employs a series of submersible multistage centrifugal pumps with submersible motors, used commonly in the water well business. Each pump is installed into a pressurized stainless steel pipe (or a “can”). The design is selected because of the high efficiency of multistage pumps in high pressure applications, and their suitability and control in delivering water when run with a variable speed drive.  The pumps are very quiet in operation, since they are, by design surrounded by the water being pumped. The design also is quite compact.

The Problem:  High Zone System Controls Issues

Management at Liberty Properties wanted to upgrade the high zone system controls – a control system which controls a 25 HP jockey pump (used for lower flows) and (2) 60 HP large pumps (staged on during periods of higher water usage). The existing controls were experiencing software communications issues, unwanted pressure spikes, and problems with the sequencing and staging of the pumps.

The entire control system needed a performance upgrade to provide more efficiencies and ease-of-use for the operator.  The customer wanted to simplify the controls, as the original control sequence was too complex, with information and software logic that was overly complicated and glitchy.

The trick was that all of the controls had to be replaced without losing water pressure to the building. The building had to stay “live” during the changeover. Therefore, pumping had to continue during the critical changeover to the new controls. A failure of the controls during the changeover could mean a loss of water, and closure of the building, which would be a major disruption to operations.

Controls upgrade:

Robert Brown Associates was contracted to replace the controls to address these issues. The project entailed completely revamping the control panel – new programmable logic controller (PLC) with new logic software, new communications module, variable speed drives and color touch screen Human Machine Interface (HMI) and graphics software.

Robert Brown Associates provided a proprietary Sencillo^TM control panel system to meet the requirements of the project.  The Sencillo control system is a hardware and software package specifically designed to control a series of pumps in parallel configuration. It includes a ladder logic scheme that maintains a selected output pressure (in PSI).  The logic decides which pump to run, pump speed, starting speed, acceleration and deceleration rates, sensitivity controls, and logic for staging of additional pumps to maintain the set point pressure.

All variables in the logic can be easily adjusted on the HMI to give the setup technician the ability to “fine tune” the system operation based on the building being serviced.  It is a powerful software design that provides a lot of control to the technician, yet very simple design that is easy for the user to maintain.

The system also employs a series of alarm functions that are sent to the main building manager if any technical issues occur with the system. All of the data is collected at the control panel, and then the Sencillo communications package relays this information to the building manager’s monitor.

The software also employs several backup functions, all designed to keep water in the building, even when internal failure of components happens.

The upgrade included new simpler internal wiring. A new dual pressure transducer was installed with an automatic switch to the backup transducer when the main transducer fails. A logic which maintains pressure even when the HMI or PLC fails is also included.

The controls were finalized with a new color HMI touch-screen to ensure ease-of-use for the operator.

The HMI screen shows a full-color, graphical representation of the entire system including:

• Piping with water flow shown
• Pump Status (Lead, Lag, Speed)
• Component Status
• Alarm Status Screen

The various screens are navigated by touch, giving the operator a complete picture of entire system at his/her fingertips.

A smooth installation…

Robert Brown Systems Manager Jose Cruz and Service Manager Jim Kelemen provided the planning, work design and installation of the system.

They began on a Thursday at 7pm and finished the installation at 5am the next day, working through the night.  The newly installed controls were online and live, and worked exactly as they had planned.

After startup, complete training was provided to the building personnel on the new control system.  Backup service is available and on-call 24/7 by Robert Brown technical staff.

The newly upgraded High Zone system is running smoothly and efficiently and the building owner and managers now have the confidence that the equipment and controls installed will provide domestic water pressure for years to come.

In the past, the only way to accomplish this heat transfer process was by using hot water or steam on the process side. In today’s industrial environment, heat transfer oil can be used for the same process, but with lower pressure requirements. The use of hot oil also eliminates or reduces corrosion effects on the pipe, equipment and pumps.  Finally, in practice, oil produces a much more consistent temperature and flow in the process.

Hot oil pumps are used in many applications, from pharmaceuticals to processing rubber compounds to making asphalt with many varieties in-between. Anything and everything that requires controlled heat can be done with hot oil.

In a typical hot oil heating system, the pump is in a closed circuit, just before the heat source (usually a gas fired boiler or oil heater). The pump is on the process side of the circuit, or the heating load. After leaving the heater, the oil passes through a heat exchanger, where the heat transfer takes place.  Heat is removed from the oil by this step and the heat is transferred to the product side. The oil is then returned to the pump, to begin the cycle again.

The type of pump used for this process is typically a centrifugal or positive displacement pump, depending on the flow/pressure characteristics needed in the process.     

MP PUMP Company, based in Frazer Michigan (www.mppumps.com) manufactures the HTO series of centrifugal pumps, specifically designed for this application.  The HTO line is one of the few close -coupled pumps (where the pump impeller is directly attached to the motor shaft) that can handle the high temperatures of hot oil without special sealing or cooling jackets.

The HTO pump is ideal for use in small spaces because it does not use a long (Lovejoy type) coupling. The pump is designed with a heat sync-type bracket, such that the mechanical seal environment is protected from the heat of the process.  This design eliminates the need for external cooling to the seal. The cooling is accomplished with the air around the pump. Most other manufacturers utilize a water cooling system.

Keeping the seal cool is important in a hot oil pump. The diagram below shows how the process temperature is reduced to less than 350 Degrees F as it passes through the bracket assembly to the area of the seal.  Because of this design, a less expensive mechanical seal can be used. This keeps the cost of the equipment and the complications of keeping the seal cool down. 

The small amount of liquid needed to lubricate the seal then arrives at the seal at a temperature that can be handled by the seal.  A cooler seal means a reduced chance of oil distillation and oxidation.  This extends seal life.

 The key steps that will reduce pump failures? 

1. Maintain oil quality by eliminating air/oil contact. This step reduces distillation and oxidation.
2. Follow the manufacturer’s recommendations in your system design for providing the correct expansion/contraction of oil using a nitrogen gas blanket to reduce distillation.
3. Use the proper oil heater calculations, so as not to “cook” the oil in the heating or heat transfer stages.

Advantages of an HTO Pump:

• Pump is insulated
• Use highly heat resistant materials
• Restricted heat flow back to the seal cavity
• Reducing the oil interaction from the pump side is very important

Hot oil in the process of heating can be a smart way to go.  If you decide to use hot oil, check out the HTO series to see if it is right for your application.  

Tom Halley
President
Robert Brown Associates

The previous facility was approximately 2,400 square feet of space in an industrial park complex. Now the organization is occupying 10,000 square foot facility with upgrades and process reconfigurations to accommodate more pump systems production and improve overall efficiencies.

Robert Brown Associates New Building

“We have added new equipment including new saws and a pipe racking system to process all the raw materials used in the fabrication process.” Halley comments. “Additionally the crane system has been extended to cover the entire shop area and gives us far more flexibility and usage of the production area. Now we have enough room to separate pump repair from fabrication; this is resulting in a cleaner, faster, and far more efficient approach to servicing our customers.”

The new repair center has been reconfigured and updated to include a new grinding station complete with dust collection. To add the finishing touches for repairs and system builds, a brand new paint booth was designed and constructed in the repair center.

To continue the “segment and focus” approach of the facility, a new control panel assembly shop was designed and implemented for further efficiencies and quality control. Halley elaborates, “We design and build our own Sencillo brand control panels. The new and upgraded assembly area allows us to do wiring from the control panel to the motors as well as complete panel testing.

The company is also a regional supplier for many pump manufacturers from around the country. To keep up with the growing demand the stocking inventory system has been completely upgraded. Halley explains, “We are a stocking distributor with over $100,000 of pump parts on-hand and another $100,000 of pumps in inventory. We have added an automated parts system with a racking numbering system for faster service and real-time inventory controls so we are properly stocked and ready for our customers.”

From the production facility, the new space continues into the office area. The layout features a large conference room designed to accommodate customer meetings and consultations. The employee offices and cubicles are strategically arranged to support each area of the business and foster better communication throughout the company. Halley adds, “In addition to streamlining the office space we have added new software and online technologies. A complete online catalog is available to showcase featured equipment and solutions. A brand new distribution management software system was integrated into the business that speeds up quotes, provides accurate inventory tracking and more fluid business operations.”

The new facility location was chosen for it’s proximity to servicing the Baltimore, Washington D.C. and Philadelphia regions.

Robert Brown Associates new address:
6-C Mount Pleasant Road
Aston PA 19014
1-800-777-6906

About Robert Brown Associates

Robert Brown Associates is a full service industrial fluid pump sales and pump systems package provider. The company has over 30 years of experience in pump installations and systems design. Robert Brown Associates was established in 1982 and utilizes facilities, engineered fluid pump staff, service personnel, service vehicles and an extensive inventory from major industrial fluid pump manufacturers. Learn more at www.rbapump.com

The major components of a vertical turbine are the suction bell, the bowl assembly, the discharge case, the column pipe assembly, discharge head, stuffing box assembly, and motor with motor shaft. All of these components work together to do the work of moving a fluid.

The unique aspect of a vertical turbine is that they are not a “pump in a box”. Each turbine pump is considered a “custom” pump – that is that each pump is designed and built for a specific application and must be defined when purchasing. It is the classic engineered product, and requires a thorough knowledge from a pump professional in order to process.

Duplex Cooling Tower Pumps

The defining characteristics of a vertical turbine are:

–         overall length of the pump, from the ground level to the end of the suction bell. (based on the sump depth, distance to the fluid)

-         the flow rate and output pressure (based on the system requirements)

-         construction of each piece (metallurgy required for the application)

-         type of column assembly (open line shaft, enclosed line shaft, etc.)

-         type of discharge head (above ground, below ground, etc.)

-         Driver type (electric motor, diesel engine, right angle gear, etc.)

-         Stuffing box (packing, mechanical seal, type, etc.)

Stuffing Box with Mechanical Seal

The average vertical turbine pump is relatively heavy (700 lbs or more) and long (8 ft or more), which requires the use of rigging equipment, experienced professional technicians and crane equipment to handle for repair.  Repairs are not typically done in the field, as many types of shop repair equipment are needed to perform all tasks of a repair job.

Repairs on a vertical turbine are a major undertaking, because of the size and weight, and because of the expertise required to disassemble, inspect and replace/repair worn elements of the unit and reassemble and test. This is not a job for even the most experienced of facilities maintenance technicians. 

             Removal Process

During disassembly the shafts are inspected for wear near the shaft bearing, bushings and stuffing box area.  The bowl assembly and the bottom bushings are measured with a micrometer for wear.  Each impeller is inspected for damage, wear and corrosion damage, and noted for suitability to be reused in the unit.

Typically, the column assembly is sanded and ground to bare metal. Any rust is removed and new bearings are installed. Severely damaged, worn or corroded parts are replaced.

Finally a new stuffing box will be installed and any wearing parts are inspected and replaced.

The motor should be completely check out and tested, and any repairs should be done while the unit is in the shop.

After the replacement and refurbishing process, the shafts are checked for straightness then the entire unit is reassembled.

The entire pump is primed and repainted with industrial grade machinery enamel. Other choices for industrial coatings can be selected at the direction of the customer.

 At this point the pump and motor are reinstalled and the motor shaft is installed. Impellers clearances are adjusted in the field during start up and testing. Rotation is checked and leak, vibration and flow tests are performed.

Vertical Turbine Pumps can run continuously for many years with a high efficiency and dependability.  However, to continue to achieve these efficiency levels maintenance is required.

Typical maintenance checks include:

• Check oil level in motors
• Vibration checks on the pump
• Pressure gauges for output pressure
• Check for noise in the equipment
• Check amp draw in the motor

  Bowl Assembly with Suction Bell

Suction Case Corrosion

      Discharge Head  

   Pump Disassembled   

Robert Brown Associates offers a complete maintenance agreement for inspecting pumps, rotation, leakage, and more. This is a key aspect to keeping the vertical turbine pumps efficient and running smoothly, especially if there are no mechanics on-site to do the required checks.

Tom Halley
President
Robert Brown Associates

Retrofitting any installation with new equipment can be a large challenge, especially, when there are tight quarters with limited access to the installation. The replacement project must go smoothly, so the building “down time” is kept to a minimum. The key to overcoming the obstacles isn’t just design and equipment selection. It really comes down to collaboration between the customer, mechanical contractor and the pump supplier.

Background:
Two Logan Square is a high rise building, owned and operated by Brandywine Realty and located in the city of Philadelphia. The domestic water system consists of a pair of 60 HP two-stage horizontal split-case pumps and a 30 HP jockey pump. The jockey pump ran at full speed with pressure reducing valves on each pump, with the larger pumps running on variable frequency drives, to maintain a constant pressure in the building through a large range of building flow demands.

The client was ready to replace the system with a complete new system, using the latest in pump design, controls, and with technology in an integrated package that saves energy.

The challenge is that the system was tucked into the back of a mechanical room surrounded by other mechanical equipment – getting the old system out and the new system in would be a challenge.

New design through collaboration:
After several strategy meetings between Jose Cruz (RBA Systems Manager), Les Moyer (RBA Account Manager) Fluidics (Mechanical Contractor) and Brandywine (owner), the team selected a new ultra-high efficiency variable speed system, using the SENCILLO (pronounced SEN’-see- Oh) Variable Speed Control System.

The new system was to be pre-built and tested at Robert Brown Associates’ facilities in King of Prussia, to ensure that it worked perfectly when it was installed and started up. Then the entire system was to be disassembled and taken to the site in pieces, reassembled, piped and wired, and then brought on-line in a small window of time the building was scheduled to be “down” or with no water service.

Critical Timing:
Timing was a critical issue in the project. The team determined the best time frame for a scheduled shutdown was late on a Friday night, at which time the on-site crew would have to demolish the old system, bring in the new system into the building in pieces, re-assemble it in place and wire it. The entire system had to be completely operational by the following Monday morning.

A Tight Fit:
The new system had to fit on existing concrete housekeeping pad, where overhead piping was low. This limited the ability to remove the motor to service the pumps. Additionally the suction piping and discharge piping had to match the existing location and clear all the overhead piping. Needless to say, it was a tight fit, and needed detailed planning.

Sizing it up:
To get started, the pumps were sized to meet the flow and pressure requirements of the building. Careful measurements were taken and new pumps were selected to meet building demand. The current pumps had sufficient flow and pressure. However, many of the old pumping systems were over-sized, based on old fixtures which used a lot more water than the new high efficiency ones. Building flow demand will often be lower with new fixtures, which results in a smaller pump size. In addition, today’s new high efficiency pumps can often handle flow and pressure demands at a higher efficiency. This resulted in a drop in motor horsepower. The new system selected was a triplex 40 HP unit.

Before & After:
The existing system employed an old relay logic constant speed control panel with manual switches and indicating lights. These older panels have lights that are prone to fail, constant speed starters, and old style mechanical circuitry. The horsepower was 60/30, with 3 pumps installed to do the job.

The new control system maintains building pressure using variable frequency drives. A programmable logic controller (PLC) and associates software are used to guide the whole system to maintain the system pressure.

Data from a pressure transducer in the discharge header is compared to a set point pressure input at the panel. All inputs and outputs are shown on a color Human-Man Interface ( HMI) touch screen, which clearly shows the client the status on the system – water running through pipe, pump speed, amperage and run time of pumps. Any alarms show up on this screen. Also, automatic controls to respond to a component failure or a city water main break are handled by the controller. Reports to a building management system are easily incorporated into the controls to let the operator know the condition of the pump package and displays the data in their control room. Every aspect is designed to keep water in all floors of the building.

Out with the old…in with the new:
Because of the tight space in the pump room, a pre-packaged and tested pump skid was the perfect choice for this application. The mechanical contractor implemented the change from old to new in a smooth and seamless manner.

The installation started on Friday night at 10pm when the supply line was isolated. It was completed by 4am on Saturday morning. They started up the system on Saturday night at 11pm.

A smooth operation:
The entire process took approximately 2 months from start of planning to finished job. The customer is happy with the installation and no problems have been reported. This is a success story, showing how a customer, mechanical contractor and pump supplier can achieve great results through collaboration.

Tom Halley
President
Robert Brown Associates

This is usually brought about by a failure of one of the pumps. That is when you find that the equipment may be old and worn out. To accomplish repairs or standard maintenance there are many factors to consider and guidelines to follow.

We always test the entire system first. This gives us an indicator of the condition of each part of the system.

First, the floats are tested, to see if they operate all functions intended. Namely, on/off operation of the lead pump, duplexing when the lag float is raised, and alternation is tested. The high water alarm is also tested at this point. Also, check the junction box for wires that are loose, dark burnt marks to indicate bad connections, and look to insure that no fluids are entering the inside of the box. This is important because sometimes the tank may overflow into junction box.

Each pump is run as part of the float testing, and you can observe to see if pumps are noisy, vibrating, and also whether they pump down at the same rate.

A swirling turbulent action in the wet well during a pump run can indicate that the check valve on the off-pump has failed, causing recirculation back through the off pump and back into the well.

When a full repair of the system is required, the first step is to clean out the tank. The entire system must be isolated by plugging the inlet piping. The tank is then pumped down to dry level and the tank is cleaned out by a sanitary vacuum truck, sometimes using a disinfectant spray. A pressure washer is also used to spray down the walls, floor and all internal equipment.

In many sewage lift stations, there is a rail system. The rails are used to allow the user to remove pumps from the station without the need to enter the tank. A small boom crane or lifting device is attached to the pump lifting chains, and the pumps are removed by simply pulling straight up. The connection to the piping is a “quick disconnect” type. The pump slides up on the rails and is free when it reaches the top of the tank.

After the inspection of the system, you will generally decide if the metal parts in the rails are deteriorated to the point that it is time to replace the entire guts of the station. This involves cutting the discharge piping off and connecting new piping, valves and rail system inside the tank.

As you can see from the pictures, the rails in this system were completely broken and had to be replaced. Also, the discharge piping was rotted.

Next, the top lid should be inspected for integrity. In many stations, the cover is simply carbon steel, and will rust badly by the continual wet and harsh conditions. Support structures should be inspected, and the lid should be replaced if rust is too severe.

The tank should then be inspected for breach, and repaired. Particular attention should be paid to the bottom corners, for damage.

Finally, the control panel and components should be checked out for loose wires, correct operation, proper amp draw and error-free pump operation.

One point about entering a lift station to do repairs – a lift station is considered a CONFINED SPACE, which requires that confined space safety rules be used. OSHA laws govern confined space entry, and dictate the required safety equipment at the site, number of workers and their roles, and procedures during entry. In confined space, there must be at least three men to do the job – an authorized entrant, authorized attendant, and stand-by safety personnel.

A safety tripod with removal harness must be in place and used, to allow a means of retrieving a disabled worker.

The job also requires the use of a “sniffer”, an air quality analyzer, which is used to check the tank for harmful or dangerous gases. Because of the nature of raw sewage, methane gas, for one, may be present, and can cause a worker to lose consciousness if exposed. For this reason, an evacuation fan is used to continuously pull the air from the tank and bring in fresh air. The tank air checked during work, to insure that the air quality remains safe for the workers.

If the fan cannot bring air quality to standards for safe entry, a self-contained air pack is required.

Sewage Lift station work involves a combination of plumbing skills, electrical skills, controls experience, structural know-how and a good knowledge of safety practices and rules.

This work is definitely not for the faint of heart.

Jim Kelemen
Service Manager
Robert Brown Associates

RBAPump.com remains the leading Online resource for those looking to source suppliers of pumps, pumping systems, pump repairs, and now pump parts. Visit our new, fully interactive spare parts catalog on our Website and let us quote your next project: http://catalog.rbapump.com/category/ategories-goulds-ansi-centrifugal-pump-spare-parts

LEGAL

These high tech installations usually include a complete backup power generation system, which provide all power needs, should the local power supplies from local utilities fail. Datacenters like these include large banks of diesel engine-powered generators, designed to give backup power to the entire operation.

One of the key components of a large power generation system is the Select Catalytic Reduction (SCR) De-Nox Scrubber. This system is designed to effectively reduce NOx content in diesel engine exhaust gases. The reducing agent in this type of scrubber is an ammonia source, frequently urea, and is injected into the exhaust stream just prior to a catalytic media. The result is a conversion of the NOx into nitrogen and water vapor, which can be vented to atmosphere.

This urea pumping system is an integrated system, and includes many elements – urea storage tanks, urea truck delivery stations, the urea pumping system, including a master control system, tank monitoring system, primary delivery header system, and individual SCR system for each generator.

The urea pumping system with controls is a product that crosses many disciplines, and requires an a supplier with an in-depth knowledge of all elements – using air or electric service to drive and control the fluid pumping equipment, tank monitoring systems, the distribution of fluid in a header system, electronics and communications in control panels, the use of flow meters to control chemical metering pumps to inject urea into an injection nozzle based on engine load output.

Together, these elements work as a finely tuned machine in scrubbing NOx from the engine exhaust, thereby making it safe for the environment.

Tom Halley
President
Robert Brown Associates

Versatility to Support Both Existing and New Tough Pumping Applications

The Aurora Model 3550 Series ANSI pump is the latest addition to the Pentair Industrial Pump line of pumping equipment. This latest product is built to ASME/ANSI B73.1M industry standards in a variety of metallurgies, including All Steel, 316 Stainless Steel, Alloy 20, Hastelloy B and C, CD4MCu, and Titanium.

The 3550 was designed to perform in the toughest industrial applications, whether in the chemical, petro-chemical, mining, pulp and paper, consumer products or general industry. This makes the 3550 a natural in the industries where an ANSI dimensional product is preferred.

In addition, the Aurora 3550 pump is specifically designed such that all parts are completely interchangeable with the GOULDS 3196 STX^TM, GOULDS 3196MTX^TM and GOULDS 3196 XLTX^TM pump models.

This gives the Aurora the advantage of being a pump supplier that can apply new pumping equipment to projects and also have parts that are 100% interchangeable with existing GOULDS^® 3196 product.

The Aurora 3500 Series parts are designed to the highest quality standards in the industry. Developed to be interchangeable means the composite and individual parts product meets or exceed the specifications for performance and mechanical integrity of those manufacturers.

Material certifications are available on all product purchases.

The added versatility of this new Aurora ANSI product and the local stock provides a full service of product for the ANSI pump user.

Robert Brown Associates stocks a large inventory of Aurora 3550 product, including complete pumps, and most parts. Parts stock includes shafts, bearing frames, impellers, cartridge seals, casings, sleeves, seal chambers, gaskets, O-rings and bearings.

The company has over 25 years of field engineering, and supply experience in centrifugal pumps. Service capabilities include 24/7 fields service for repairs including a mobile repair vehicle for field repairs.

*Aurora Pump and its affiliates are in no way affiliated with this company or its products. The names are used for reference purpose only.

*Goulds^®, 3196STX, 3196MTX and 3196XLTX are registered and trademarked products