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This Aprilaire 51 sensing relay features a compact
This thermal expansion device acts as the primary refrigerant metering component
The Heil Quaker ICP 1184605 Thermistor Assembly is a critical OEM replacement part designed for precision temperature monitoring in high-efficiency HVAC systems
The integrated 3-way manual override switch (ON/AUTO/OFF) provides immediate local control
it often lacks the consistency and specific thickness required for the collector box's pressure requirements
Siemens Building Technology GCA166.1U Actuator 322056-301 This Aprilaire 51 sensing relayThe Siemens GCA166. 1U is a heavy duty OpenAir spring return actuator engineered for precise modulating control of HVAC dampers in commercial building automation systems. Operating on 24V AC DC, this unit delivers a robust 142 lb in torque (rated up to 160 lb in in specific applications) to manage large damper areas effectively. It utilizes a 0 10VDC control signal for linear positioning and features dual auxiliary switches for end stop monitoring or
US$ 724.50
US$ 649.50
US$ 724.50
US$ 649.50
US$ 324.50
US$ 13350.00
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