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Precise Pressure Regulation: Adjustable
This 72-inch thermocouple provides the necessary reach for large industrial boilers and furnaces while maintaining a stable 25-35 mV open circuit range
Fail-Safe Spring Return: Returns the valve to the normally open position automatically during power loss to prevent system stagnation
Universal Compatibility: Designed as a direct service replacement for Robertshaw
Precision Calibration: Fixed setpoint of
ZoneFirst SPRD-12X12 Damper Els PW 17895 Precise Pressure Regulation: AdjustableThe ZoneFirst SPRD 12X12 is a professional grade barometric static pressure regulating damper engineered to maintain system integrity in multi zone residential and commercial HVAC applications. Built from heavy duty 22 gauge galvanized steel, this 12" x 12" rectangular bypass damper utilizes a counter balanced weighted arm to automatically relieve excess static pressure as zone dampers close. By bleeding off excess air, it prevents evaporator coil
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