2.5'' 63mm/3'' 76mm Stainless Steel Exhaust Control Valve Set Vacuum Actuator CLOSED Style Pipe Pressure: about -3psi
Open Pressure: about -3PSI
Diameter of Butterfly Valve: 2inch 51mm / 2.5inch 63mm / 3inch 76mm
QTY: 1 set
The valve type :CLOSED
Made of Stainless steel 304
Professional installation is strongly recommended.