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As an OEM HVAC part
For contractors performing a motor swap or shroud repair
Constructed from high-stability elastomer
Always verify fuel type before installation
Schneider Electric (Barber Colman) 21-153 Restrictor As an OEM HVAC partThe Schneider Electric (Barber Colman) 21 153 In Line Restrictor is a critical pneumatic component engineered for precise airflow regulation in HVAC control systems. Specifically designed for use with NCS TUBE or standard 1 4" poly tube, this 0. 007 orifice restrictor provides a calibrated flow rate of 1. 0 SCFH (28. 32 L H) at a 20 psig reference. This component is essential for maintaining signal stability in transmitters and bleed type units,
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