3.5-inch normally open vacuum valve

Feature:
*Diameter of Butterfly Valve: 3.5inch/89mm
(If you need 2″/ 51mm or 2.5inch/63mm, please contact us)
Close Style QTY: 1PC
The Valve Type :OPEN
Starting Type: Negative Pressure
Made of Stainless steel 304
Fits with 3.5inch/89mm approx. OD pipe
The pressure range: -2 psi – 5.5 psi