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and gravity-fed heating systems
As a critical component in pneumatic control systems
it is not a substitute for a dedicated backflow preventer like the Watts 288A series
restoring the system to peak airflow circulation and thermal efficiency immediately upon installation
The low power consumption during hold cycles improves overall system efficiency
Johnson Controls VG2831WN Valve Body Els PW 29614 and gravity-fed heating systemsThe Johnson Controls VG2831WN is a heavy duty, 5 inch 3 way mixing globe valve engineered specifically for high capacity flow control in commercial HVACR and industrial applications. This ANSI Class 125 flanged unit is built with a rugged cast iron body and durable brass trim, providing long term reliability when managing hot water, chilled water, or 50% glycol solutions. With a high flow coefficient (238 Cv) and a modified linear flow characteristic,