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Ships within 48 hours · Estimated delivery Sep 4 - Sep 9
All ZD series dampers are manufactured 1/4" undersized to ensure a proper fit without binding in standard rectangular ductwork
This model typically ships with Polyolester (POE) oil
it includes an internal desiccant—typically a blend of silica gel and activated alumina—to actively remove moisture and prevent acid buildup within the refrigerant line
Drop-in Compatibility: Features standard dual 1/4" barb ports for fast field installation without modifying vacuum tubing
Johnson Controls VG2231VN Valve THPU32HP7Y All ZD series dampers areThe Johnson Controls VG2231VN Valve is a professional grade 4 inch flanged globe valve engineered specifically for high capacity flow regulation in commercial HVACR systems. This 2 way normally open (Push Down To Close) valve features an ASME Class 125 flat faced flange and a rugged cast iron body designed to handle chilled water, hot water, 50% glycol solutions, and saturated steam up to 35 psig. With a 150 Cv flow coefficient and modified linear
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