Vacuum negative- pressure safety valve

A72W-10P, A72W-10R

A72W is applicable in negative pressure system with temperature≤200℃. When the negative pressure in the container exceeds the allowed value, the valve will open automatically and absorbs air. When the negative pressure in the container reaches the allowed value, the valve will close automatically so as to protect the equipment and the system. It is to be installed in normal non-negative pressure systems. When the discharge valve of the container and system has not opened, which produces the negative pressure, this valve will open automatically.