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matching the heat exchanger's output requirements and preventing "all-or-nothing" temperature swings
Built with a robust 440/480Vac 50/60Hz coil voltage
providing the consistent air circulation necessary for maintaining system static pressure
What are the timing specs for this relay
Dwyer Instruments A-350 Aspirator Bulb 320819-301 matching the heat exchanger's outputIf you're out in the field running leak checking tests or validating pressure switch calibration, the Dwyer A 350 Aspirator Bulb is a staple in the technicians bag. This manual pump is engineered to provide a reliable source of positive pressure or vacuum for various HVAC test instruments. By simply connecting your 1 4 inch tubing to the barbed fitting, you can generate the required pressure with a single hand. For vacuum applications, such as pulling
