Prevents internal vacuum conditions
Opens quickly in emergency situations
Listed by CSA
Every valve is tested for performance prior to shipping
A vacuum relief valve shall be installed to protect the pressure vessel. The valve shall be CSA certified per ANSI Z21.22/CSA 4.4. The valve shall be constructed of brass with an integral body seat disc. The valve shall open on a one-inch mercury vacuum. The valve shall be a Cash Acme VR-801 Vacuum Relief Valve.