APPLICATION Safety relief valve SVN-N is primary designed for instalation on air storage vessels, although it can be equally efficient installed on all other gas vessels and instalations. DESIGN FEATURES Safety relief valve SVN-N is type of valve with no end connections, so the relieved gas goes right in to the atmosphere. This should be kept in mind if installed in explosive atmosphere. It automatically opens and relief limited volume of gas, and automatically closes when pressure normalizes in the system it secures. Safety valve SVN acts directly according to the developed force, as a result of gas pressure on the plate the set force of the spring is resised. With the adequate increase of pressure, the seat is lifted up to max. 1/4 seat diameter and with this the exiting conduit is opened.