Bubble-Tight Dampers HBTR Series • Zero Leakage

Bubble-Tight Construction Features The HBTR series is a bubble-tight damper that is designed for isolation applications. Bubble-tight means the damper has the lowest possible leakage rating: zero. The silicone blade seal and double-gland axle seals provide bubble-tight performance. Common bubble-tight applications include: • Medical facilities • Laboratories • Food processing • Federal buildings • Microelectronic manufacturing • Clean rooms Blade Seals The heavy duty anged frame is available with optional mounting holes which can be customized to match your mating ange. A silicone rubber blade...

HBTR-151 & HBTR-451 Performance Data Quick Reference HBTR-151 Maximum Pressure Maximum Velocity Minimum Size Maximum Size Painted Steel Paint Finishes Minimum Temperature Maximum Temperature Industrial Epoxy Maximum Leakage Epoxy Standard Pressure Drop Data This pressure drop data was conducted in accordance with AMCA Standard 500-D using Test Figure 5.3. All 3 data has been corrected to represent standard air at a density of 0.075 lb/ft (1.2 kg/m3 ). Actual pressure drop found in any HVAC system is a combination of many factors. This pressure drop information along with an analysis of other...

Testing Factory Tested Every HBTR series damper is leakage tested in accordance with AMCA 500-D gure 5.8 before it leaves the factory to ensure bubble-tight performance. In-house Testing State-of-the-art laboratory and testing facilities have always been important to Greenheck’s continuing business success. We have a laboratory facility devoted exclusively to the development and testing of damper and louver related products to the latest versions of AMCA, ANSI, ASHRAE, UL, Warnock-Hersey, MiamiDade County, and other industry standards of performance. Our Commitment As a result of our commitment...