ZoneFirst SPRD-12X12 Damper Els PW 17895 and small-scale commercial plumbing setups

and small-scale commercial plumbing setups

requiring no external power supply to operate

the internal bimetal disc may be defective

Skin oils can create hot spots on the surface of the silicon nitride element

Is this sensor compatible with 3/8" tubing

ZoneFirst SPRD-12X12 Damper Els PW 17895 and small-scale commercial plumbing setupsThe ZoneFirst SPRD 12X12 is a professional grade barometric static pressure regulating damper engineered to maintain system integrity in multi zone residential and commercial HVAC applications. Built from heavy duty 22 gauge galvanized steel, this 12" x 12" rectangular bypass damper utilizes a counter balanced weighted arm to automatically relieve excess static pressure as zone dampers close. By bleeding off excess air, it prevents evaporator coil