making it a versatile choice for both chilled water and hot water applications

75 in WC differential

Versatile Compatibility: Rated for use with modern HFC refrigerants and synthetic oils

Maintains solenoid operation integrity without replacing the entire brass valve body

Diaphragms must be matched strictly to the fluid or gas they are rated for

ZoneFirst SPRD-20X8 Damper Els PW 17895 making it a versatile choiceThe ZoneFirst SPRD 20X8 is a heavy duty barometric bypass damper engineered for precise static pressure regulation in multi zone residential and light commercial HVAC systems. This 20" x 8" mechanical unit utilizes a field adjustable weighted arm to facilitate effective bypass air management without the requirement for complex electronic controls or wiring. As zone dampers close and duct pressure rises, the ZoneFirst SPRD 20X8 automatically opens to