Designed with 4-in flanged ports and only three moving parts, Tri-Rotor’s 200 Series pumps are heavy-duty, low-maintenance workhorses for pumping liquid and semi-solid materials with viscosities from 40/4 to 100,000/21625. Flow rates range from 58 to 240 gpm (200 gpm at 430 rpm). The 200 Series includes three head types: variable volume, relief valve, and transfer.
Greenheck has expanded its Air Measuring Damper (AMD) line with the addition of the AMD-TD series of thermal dispersion-based airflow measuring dampers. The AMD-TD series combines the functionality of a highly-accurate thermal dispersion airflow station and a low-leakage control damper to control airflow volumes to a target set point.
Daikin announced that its MXS 2, 3 and 4-port multi-zone heat pumps have been redesigned to improve application flexibility and heating efficiencies. The MXS is ideal for light commercial applications, providing individual comfort for up to four zones using a single outdoor condensing unit.
Lennox Commercial has expanded its light commercial Raider® rooftop unit line to include the new Raider 6-ton unit available in gas/electric and electric/electric configurations and the new 14 SEER units, available in 3-5 tons. The addition of the new Raider 6-ton rooftop unit rounds out the Raider portfolio.
Extech Instruments has unveiled the new RD300, a heated diode refrigerant leak detector that pinpoints leaks of all CFC, HCFC, and HFC refrigerants with three levels of sensitivity to leaks as small as 0.25oz/yr (7g/yr). The ergonomic tool also features a built-in LED work light on the probe tip for dimly lit locations.
Rosenberg has released four new axial fans, complete with shrouds and finger guards for HVAC condenser applications. The fans are designed with profiled aluminum blades with winglet tips that aim to reduce noise and improve fan performance.
CertainTeed has launched its newly enhanced Sustainable Insulation™ SoftTouch™ Duct Wrap. The product offers improvements in cutting and handling while maintaining the company’s fiberglass product performance. CertainTeed officials said the Sustainable Insulation SoftTouch is a resilient fiberglass blanket-type insulation that provides superior thermal efficiency by reducing unwanted heat loss or gain in both rectangular and round heating, ventilating, and air conditioning ductwork.
Semco LLC introduced the ASCENDANT™ Series, a conventional cooling and active desiccant dehumidification hybrid system with regeneration input. Available in five standard models ranging up to 20,000 cfm, the ASCENDANT Series is ideal for hospital operating rooms, archival and dry storage, hotel/condo buildings, and other applications requiring low dew point temperatures and supply air humidity levels as low as 15 grains.
The Grundfos Hydro MPC BoosterpaQ® is a fully-integrated and compact pressure-boosting system that offers multiple configurations — with up to six pumps in parallel — to accommodate water supply systems, as well as industrial and irrigation applications.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.