773.774.2800The LPD Mag Provides a Silent Sigh of Relief to Chicago Residential Building Pump Room
A residential building in downtown Chicago was having repeated failures of their pumps with ECM motors. The LPD Mag, a high efficiency, low pressure drop Y-Strainer with a Neodymium Magnet, from the Metraflex Company, proved to be the perfect solution. Download PDF Version > A residential condo building in downtown Chicago was…
Read MoreMarley Tower Start-Up at MASOM
Salesmen Nate Hultgren and Lee Furnish just helped start up a shiny new SPX Marley cooling tower with MC Mechanical at the MASOM Mosque on Lawrence Avenue. Thanks to Tony from MC Mechanical for the shoutout, and the tower looks great!
Read MoreXylem study analyzes life-cycle cost of HVAC systems
Xylem study analyzes life-cycle cost of HVAC systems Hydronic systems outperform VRF, analysis finds Introduction Upfront costs and energy consumption are primary drivers when selecting a commercial HVAC system in new and retrofit projects. A new study commissioned by Xylem underscores the importance of evaluating total life-cycle cost in the selection process to adequately identify…
Read MoreLook No Further for Packed Joints
Look No Further for Packed Joints You read it right. Metraflex has expanded its product line to include packed expansion joints, on top of all the other great piping solutions we offer. We’re happy to announce we’ve began production on the MetraPak. The MetraPak packed expansion joint features a slip that can be repacked while in…
Read MoreGet Ready to be Mind Blown Holographically
As we all know, technology is rapidly taking over our lives. The introduction of AI, VR, DVD, VHS… wait. Can you even remember the last time you went somewhere without your cellphone? Well the minds at Metraflex noticed this long ago and began developing something easy and convenient that is sure to catch your eye.…
Read MoreUnderstanding NPSH Part 3
Last time, we looked at how NPSH can be impacted by a poor pump selection, such as using a 3500 RPM pump selected near the end of its published curve. Sometimes this can be remediated by reducing the pump speed, but not always. If the NPSHr curve is relatively flat, the speed reduction may help. …
Read MoreUnderstanding NPSH Part 2
Last time, we saw that as we supply more pressure to the pump suction than what the pump manufacturer requires, we are OK. But that isn’t the whole story: most pumps in HVAC operate over a range of flows, meaning they will change flow rates based on loads or control strategies. So, what happens as…
Read MoreUnderstanding NPSH, Part 1
NPSH is probably the least understood part of a manufacturers pump curve. It’s easy to see why: we use atmospheric pressures as reference, the effects aren’t always audible, and it’s hard to tell pump cavitational noises from air entrapment. NPSH stands for Net Positive Suction Head. Roughly interpreted, it’s the amount of absolute pressure at…
Read MorePump Feet of Head and Foot Pounds
Why do pumps use Feet of Head instead of PSI? Centrifugal pumps show flow in gallons per minute (in the US). That makes sense, right? So why are we showing the differential pressure created by the pump in Feet of Head? Why doesn’t the pump curve show pressure differential in PSI? In a sense, it…
Read MoreGoulds Water Technology launches AGS Series axial grinder pumps
Goulds Water Technology launches AGS Series axial grinder pumps Proven technology handles modern wastewater stream with ease Auburn, New York — Dec. 18, 2018 — Goulds Water Technology, a Xylem brand, is introducing its new AGS Series axial grinder pumps that provide best-in-class performance against the challenges of solids, flushables and trash present in residential wastewater…
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