For many years, Northwest Pump has partnered with PSG, a Dover Company, to provide our customers with the industrial and petroleum pumping equipment they need. PSG, A Dover Company, has many internationally acclaimed pump brands including Wilden, Blackmer, & Griswold. However, many in the US may not recognize its more popular brands coming out of Europe: Almatec, Abaque, & Mouvex. These brands have been offered sporadically through the US, but now Northwest Pump is proud to announce that along with being the PSG west coast distributor, we are now the master distributors for these brands from Alaska to New Mexico, including Hawaii. So, what does Northwest Pump as master distributor for these brands look like? Here is everything you need to know.
What does a Master Distributorship mean for you?
As your PSG west coast master distributor, Northwest Pump has been able to offer eight of its core brands in our territory. What has now changed is Northwest Pump is now importing Almatec, Abaque, and Mouvex directly from their manufacturers in Europe. While we are the primary importer of these brands, Northwest Pump will support other PSG distributors within our territory when they acquire Abaque, Almatec, & Mouvex products. The only change these distributors will experience is the point of contact for these pumps.
Northwest Pump will be the primary point of contact for technical support, customer service, and service & warranty needs. This means for anything related to product information, basic application support, availability or order status, as well as warranty claims will go through Northwest Pump. PSG will continue to provide more advanced technical support through its branded websites, distributor portals, and product selection tools.
What do these brands offer?
Almatec designs AODD pumps for specialized applications such as chemical processing, pulp & paper, battery production, and semiconductor construction. To prevent untimely corrosion, Almatec offers its pumps in three main materials polyethylene (PE), polytetrafluorethylene (PTFE), and stainless steel. Learn more about Almatec here.
Abaque specializes in peristaltic hose pumps. The main benefit of these kinds of pumps is the pumped fluid will not be exposed to air. Abaque pumps are perfect for water/wastewater, mining, chemical, and sanitary applications. Learn more about Abaque here.
Mouvex is a familiar brand at Northwest Pump. It offers eccentric disc pumps designed specifically for hygienic applications. This brand has pumps for applications ranging from paint to cosmetics, as well as wine & beer to fruit slurries & yogurt. Learn more about Mouvex here.
Next Steps
Interested in seeing what these pumps can do for you? Contact your nearest Northwest Pump branch here. Need repairs on your current PSG equipment? Our service team is vendor certified for your needs. Request service directly here for immediate assistance.
In applications such as poultry or meat processing, where fresh meat is abundant, maintaining a sterile environment is critical. One of the solutions for preventing contamination is utilizing a vacuum pump to seal the meat before it loses its freshness. Here is everything you need to know about vacuum pumps for meat applications.
How does a vacuum pump work?
The principle behind all vacuum pumps is creating areas with low or no pressure within the chambers of the pump. From there, the gas within a contained area will try to fill what space remains until there is no gas left. These pumps operate much more like air compressors, and often use similar techniques.
Why Use a Vacuum Pump for Meat Applications?
Beyond sealing in the freshness, facilities can use vacuum pumps in a variety of applications throughout the production line. These pumps can remove the waste byproducts that might easily damage other pumps and even transport unusable parts to collection areas. Additionally, vacuum pumps offer easy transportation & packaging solutions. This reduces the mess and hassle that facilities can typically encounter with waste or even end products. Lastly, vacuum pumps can assist with marinating, tumbling, breading end products to maintain the right colors, flavors, and textures of the meat.
Our Vacuum Pump Products
Northwest Pump is proud to represent Atlas Copco’s vacuum pumps, especially when working with meat or poultry processing applications. Atlas Copco’s catalogue of vacuum pumps offers oil-sealed, liquid-ring, and dry vacuum pumps in both fixed and variable speed drives.
Whether dealing with evisceration or packaging & transporting meat from beef to pork, we recommend their rotary screw GHS series vacuum pumps. These durable pumps work well in the harsher, humid environments that these facilities tend to be. Its compact, simple design also means that these pumps will not take up more space than absolutely necessary.
For applications that deal more with processing poultry specifically, we recommend liquid ring vacuum pumps from Atlas Copco. These products will withstand the byproducts that could harm other types of vacuum pumps, in addition to working better in the harsher, humid environments that these facilities tend to be. For packaging and transportation applications, we recommend looking into vacuum pumps with variable speed drives to better control energy outputs and match demand as needed.
Next Steps
Find out how your facility can increase performance with vacuum pumps by reaching out to our team of experts here, emailing us at sales@nwpump.com, or by calling us at 1-800-452-PUMP. For service on your current vacuum pumps, you can reach our service division here, email them at service@nwpump.com, or call at 1-866-577-2755.
When it comes to food production, there are strict standards during the manufacturing process to maintain safety standards. With smooth internal surfaces & ease of cleaning, sanitary pumps meet these requirements to protect against bacteria and other contaminants. Northwest Pump offers several sanitary pump options for many different applications, whether it be for a thick yogurt slurry or freshly pressed oil.
Do all pumps in a plant need to be sanitary pumps?
No, not all pumps in a food production plant need to be sanitary. A sanitary pump is only necessary when it is in direct contact with food products. Grundfos, for example, does not offer sanitary pumps. What it offers instead is pressure-boosting equipment as well as pumps to clean out the sanitary equipment already present in a facility.
What makes equipment sanitary?
3-A symbol from the International Association of Milk, Food, and Environmental Standards
The FDA regulates Food Contact Substances (FCS) ranging from the pumping equipment processing the food, to the coverings on an at-home coffee machine. The key feature of sanitary equipment is a smooth surface that can be easily cleaned. Manufacturers of sanitary pumps can offer easily disassembled pumps to increase the ease of cleaning, depending on the brand. A sanitary pump will typically be made of stainless steel 316A, or alternatively will be made of a non-porous plastic. The International Association of Milk, Food, & Environmental Standards also has a symbol called 3A to show when a pump meets these classifications. This and the FDA logos will appear on pump literature when the product meets these requirements.
Are sanitary & hygienic the same thing?
The main difference between hygienic and sanitary equipment is in their applications. The FDA classification for sanitary pumps must meet higher standards for consumer product manufacturing. Hygienic pumps on the other hand, are for high-volume transfer applications for food & beverage, cosmetics, and even pharmaceutical processing.
Our Sanitary Products
Northwest Pump offers sanitary & hygienic pumps for a variety of applications. Our main vendor for sanitary pump equipment is PSG, a Dover Company, through its Wilden, Mouvex, and Abaque brands. We now also offer vacuum pumps through Atlas Copco, for canning and other sanitary applications. In addition to these pumps, Northwest Pump now offers food-grade valves, fittings, and other ancillary pumping equipment through Dixon Valve & Fitting. For food-grade lubricants, we have partnered with A.W. Chesterton Company. Finally, for food-safe compressed air, Northwest Pump offers oil-free compressors through Sullair.
Next Steps
Need a sanitary pump for your facility? You can contact our experts here, email them at sales@nwpump.com, or call 1-800-452-PUMP to discuss your application needs. Looking for service on your current sanitary pumps? Reach our service team here, email them at service@nwpump.com, or call 1-866-577-2755.
Over the last few months, our Industrial service team has been working on revitalizing the Portland branch’s in-house pump shop. The end goal of this project is to build the most respected industrial pump repair shop in the country. Northwest Pump is committed to servicing your industrial equipment needs, and now we will expand our capabilities even further.
Learning from the best
Our team realized the best way to start this journey was to look at other renowned pump shops across the United States to compare what they have, to where we want to be. With help from A.W. Chesterton, the team was able to visit pump fabrication facilities in the south-eastern US. This helped us know not only the type of equipment they utilize, but also the layout of the shop as well as the technical know-how our team needed to consider.
What to expect from the new pump shop
When the renovations are finished, Northwest Pumps’ repair shop will be assembling pump packages in-house. The packages will have Chesterton seals or packing as needed and be engineered with customer need first. We will also be able to increase production in compressor packages manufactured in-house as well.
In addition to assemblies, the shop will add an inside overhead crane to expand our capabilities when working with larger turbine pumps. The shop is also upgrading its dynamic balancer for more precise insights on the balance of the impellers that we work with.
What is new?
In the time since the trip, our shop has upgraded its tool boxes for increased capacity & ease of use. Those visiting our Portland branch for any will calls should notice the warehouse now starting to make space for upcoming pump assemblies already. As we begin the process of updating the shop, we expect no impacts to repair times.
Next Steps
Stay tuned for updates through social media or sign up for our service newsletter to receive them monthly below.
Looking for maintenance on your industrial pumps? Request an appointment here.
When investing in air compressors for your facility, it is also important to consider what other accessories might be needed along with the compressor & the piping. One of the more common accessories- especially in the Pacific Northwest- is an air dryer. Northwest Pump offers desiccant & refrigerated air dryers through Sullair and the other air compressor vendors that partner with Northwest Pump. The difference between all the variations of dryers depend on the way they remove moisture. Here are a few points to consider when looking for a compressed air dryer for your system.
Why use a compressed air dryer?
Facilities use dryers of either style to reduce the moisture in the compressed air. Excess moisture can cause problems for the equipment using the compressed air. Depending on the intended use, this moisture could also damage the end-product, reducing its quality or requiring it to be thrown out entirely.
Refrigerated Dryers
Refrigerated dryers work much like a refrigerator in a kitchen does. These dryers reduce the temperature for the compressed air to approximately 35°F, causing the moisture mixed with the air to turn to condensate. The condensate is then stored within the dryer until it gets drained. The dry air then passes through a heat exchanger to be warmed back up before exiting the dryer.
There are several advantages facilities with refrigerated dryers can expect. First, they tend to be a cheaper investment than other kinds of compressed air dryers. Refrigerated dryers also typically have reduced maintenance costs. However, the cost to operate a refrigerated dryer will vary drastically depending on the ambient temperature around the dryer itself.
Facilities where winter temperatures drop to below freezing should expect to see an increase in costs when using a refrigerated dryer during the winter months. That is because the dewpoint, the point where moisture turns from a gas to a liquid, of the dryer is now higher than the temperature outside. For these reasons, refrigerated dryers are not suitable for installation in areas where temperatures reach 35°F or below. Even if the dryer is installed in a climate controlled area, if the compressed air system’s piping goes outside or is exposed to freezing temperatures, then water will condense in the lines. In this scenario, a desiccant dryer would be needed.
Desiccant Dryers
Desiccant dryers utilize two alternating towers filled with material designed to absorb the moisture in the condensed air. The air travels through a tower, removing moisture, before being sent to the plant. As one tower becomes saturated with moisture the system automatically switches towers until it ‘dries out’ then cycles back.
Desiccant dryers have several ways of maintaining the same air pressure: heatless, heated, and a heated blower purge. Heated desiccant dryers use an additional heat source to help dry the saturated desiccant, which reduces the amount of purge air needed compared to the heatless design. Heated blower purge dryers utilize an ambient air blower in addition to a heater to further reduce the amount of purge air used to achieve the desired pressure dewpoint.
Customers can expect higher initial costs when purchasing a desiccant dryer. Because this type of dryer does not rely on temperature to remove moisture, it costs less to operate annually.
Next Steps
Looking to upgrade your compressed air system? Ask our experts how Sullair’s compressors and dryers can reduce your utility bills here, by calling us at 1-800-452-PUMP, or emailing sales@nwpump.com. Looking for service for your compressors or dryers? Request service here, call us at 1-866-577-2755, or email us at service@nwpump.com.
A crucial step in preventative maintenance in pumps is finding and using the correct seal for the job. Mechanical seals are used to seal the rotating shaft in pumps and other equipment. With so many mechanical seal designs on the market, it can be difficult to identify which kinds to use. A.W. Chesterton Company’s mechanical seal design utilizes 5 design principles to maximize its sealing capabilities. These principles have been refined by Chesterton since the company brought its first mechanical seal to market in 1970. After all the lessons learned from successes and failures, they have determined the Five Key Features that a mechanical seal should have to reduce unplanned maintenance and downtime. To provide the greatest mean time between failures (MTBF) and avoid downtime, they utilize these five design principles in their sealing devices.
Protected Springs
Spring protected from fluids | Image provided by A.W. Chesterton Company
Typically, within early mechanical seal designs, the springs were submerged within the fluid. However, this can lead to trouble when fluids with dirt or other contaminates interact with the springs. When the contaminates collect within the spring, it cannot correctly maintain the alignment necessary for a complete seal. Chesterton’s mechanical seal design protects the springs within the mechanical seal from the fluids being pumped.
Balanced Design
The second design feature and open secret of Chesterton’s mechanical seal design is balance. On the mechanical seal, there are two main sides, the fluid side, and the atmospheric side. To prevent moisture from leaking out of the seal, both sides put equal pressure on each other to trap the fluid. Many seals will often see that the fluid side exerts greater pressure than the atmospheric side. Not only does this reduce the quality of the seal, but it can also ruin the pump with time. Balanced seals reduce the seal ring area on which the hydraulic pressure of the liquid in the pump acts. This allows for better lubrication that results in lower heat generation, face wear, and power consumption. Balanced seals will generally have higher pressure ratings than unbalanced seals.
Non-fretting
Non-Fretting Seal | Image provided by A.W. Chesterton Company
Fretting on a pump shaft refers to the way that a material is worn away on a shaft by an elastomeric material. An example may be a 316 stainless steel shaft sleeve that is damaged by a Viton O-ring. Stainless steel protects a shaft from corrosion by forming a chrome oxide layer on the surface. The dynamic O-ring wears that protective surface away and it then reforms. Over time the chrome oxide gets imbedded into the O-ring and works like sandpaper removing even more material. The result is a groove worn into your expensive sleeve and a leaking mechanical seal. Chesterton seals utilize designs that have any dynamic O-rings operating against a non-metallic surface, usually the sacrificial face.
Additionally, some manufacturers offer seals that are self-fretting, rather than shaft-fretting. What this means is that these seals do not fret or damage the shaft, they harm seal itself. While this protects the pumps, the O-rings still work against metal, reducing the lifespan of the seal itself.
Monolithic Seal Faces
Inserted vs Monolithic Seal Face | Image provided by A.W. Chesterton Company
Some mechanical seal designs utilize an inserted seal face, typically made of carbon or graphite inserted into a metal holder. However, the disadvantage to this technique is these non-metallic materials often react to heat differently than the metal of the seal. The result is the face of the seal is easily deformed- leading to leaks and early replacement of the seal. Proper mechanical seal design uses monolithic seal faces without using a holder and inserted face. By using Finite Element Analysis (computer modeling), Chesterton’s monolithic seal face designs are made more efficiently than ever.
Stationary Design
Rotary vs Stationary Seals | Image provided by A.W. Chesterton Company
Mechanical seals can either use rotating or stationary springs. With rotary mechanical seals, it is important that the stuffing box face is perpendicular to the shaft for the faces to stay closed. There will always be some resulting misalignment from installation and parts tolerances so this alignment cannot be assured. To compensate for the misalignment, the springs must adjust each time the shaft rotates to keep the seal faces closed. At motor speeds this adjustment happens thousands of times per minute (for 1800 rpm, 3600 adjustments occur) which is not only difficult to accomplish, the springs will fatigue and fail causing seal failure. Rotary seals are simple in design which makes them inexpensive
In contrast, a stationary seal is designed in such a way that the springs do not rotate with the pump shaft; they remain stationary. Because the springs do not rotate, they are unaffected by the rotation of the shaft or how fast the shaft rotates. The springs do not need to correct or adjust with each rotation; they adjust for misalignment only once when installed. Chesterton uses this as the fifth design requirement, and this provides greater life to their mechanical seals.
Chesterton 1510L in Action
Using these five design principles, Chesterton has updated its 150 seals to the new 1510 seal. The new design uses a monolithic seal face and changes where the dynamic O-rings are placed to be a non-fretting seal. Chesterton unveiled this updated seal in the US in September of 2022. However, Chesterton also has one additional add-on for this new seal. Starting at the end of October 2022, Chesterton will be releasing the 1510L. The 1510L has all the same design capabilities of the 1510, the difference between the two is the installation process. The 1510L utilizes a lock ring mechanism to simplify installation requiring the installer to tighten only one screw to connect the seal to the shaft.
Next Steps
To request a demonstration for the 1510L mechanical seal, click here. Learn more about Northwest Pump’s mechanical seals by contacting us here, emailing us at sales@nwpump.com, or by calling 1-800-452-PUMP.
For service on your mechanical seals by our Chesterton certified pump technicians, contact us here, email us at service@nwpump.com, or call 1-866-577-2755.
In the time since the trip, our shop has upgraded its tool boxes for increased capacity & ease of use. Those visiting our Portland branch for any will calls should notice the warehouse now starting to make space for upcoming pump assemblies already. As we begin the process of updating the shop, we expect no impacts to repair times.
Facilities use dryers of either style to reduce the moisture in the compressed air. Excess moisture can cause problems for the equipment using the compressed air. Depending on the intended use, this moisture could also damage the end-product, reducing its quality or requiring it to be thrown out entirely.
There are several advantages facilities with refrigerated dryers can expect. First, they tend to be a cheaper investment than other kinds of compressed air dryers. Refrigerated dryers also typically have reduced maintenance costs. However, the cost to operate a refrigerated dryer will vary drastically depending on the ambient temperature around the dryer itself.
