Siemens Building Technology QFM81.2 Sensor 320788-703 The Bard 5651-138BX Expansion Valve
Platform notes & fabric story
Description
The Bard 5651-138BX Expansion Valve is a critical metering component designed for precise refrigerant flow control in Bard wall-mount heat pumps and air conditioning systems
How do I confirm the rotation of this blower motor
Broad Capacitance Range: The 340-408 microfarad rating ensures high starting torque for heavy-duty 250V motor applications
Precision Shaft Design: Features a 7/32" x 1-1/2" shaft with a flat side for secure attachment to existing blower wheels
The raw-edge sidewalls ensure a more aggressive grip on pulley surfaces
Siemens Building Technology QFM81.2 Sensor 320788-703 The Bard 5651-138BX Expansion ValveThe Siemens QFM81. 2 is a professional grade duct hygrostat designed for precision monitoring and control of relative humidity in commercial HVAC systems. This duct mounted sensor utilizes a stabilized plastic sensing element that remains accurate and linear even in high humidity environments. As a veteran technician knows, the SPDT output signal is critical for seamlessly switching between humidification and dehumidification equipment, making it a