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Optimized Airflow: Precision-fit 15-inch design maintains the 320 to 500 CFM ratings required for system balance
the 396021 is specifically designed for two-stage gas valves
it is the correct choice for systems using distributors or those with significant pressure drops across the evaporator
Check the temperature differential across the valve
Schneider Electric (Erie) VS2221 Valve Body 320819-301 Optimized Airflow: Precision-fit 15-inch designThe Schneider Electric (Erie) VS2221 Valve Body is a robust 1 2 inch NPT two way assembly engineered for low pressure steam and hydronic zone control. Designed for high cycle performance in commercial HVAC systems, this brass zone valve body features a 1. 0 Cv flow coefficient, ensuring precise regulation of terminal units. It utilizes a two position, spring return operation when paired with compatible Erie PopTop actuators, simplifying field
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