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Engineered for high-temperature environments typical of industrial gas-fired unit heaters
this replacement valve assembly ensures precise flow control and reliable zone isolation
ensuring a secure and leak-free fit when properly seated in the pilot bracket
What is the maximum pressure rating for the CD3603/CD3604 series
ZoneFirst SPRD-12X8 Damper Els PW 17895 Engineered for high-temperature environments typicalThe ZoneFirst SPRD 12X8 is a professional grade barometric static pressure regulating damper designed to maintain optimal bypass airflow in multi zone HVAC systems. As the direct replacement for the PRD 12X8, this 12" wide by 8" high rectangular unit utilizes a counter balanced weighted arm to automatically bleed off excess static pressure when zone dampers close. This critical function prevents high velocity air noise, protects the heat exchanger