Safety relief valve for air type SVN-N

Safety relief valve for air type SVN-N

 

DN 3/8” - 1 1/4“”

 

PN 25 

 

p 1 - 25 bar

 

t -20°C / +90°C

 

acceptable media all non-aggressive gases

 

connections ISO 7-1, ANSI B1 20.1
 

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.

 

 

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.

 

 

EN ISO/IEC 17025 certified laboratory

 

 

EN ISO 4126-1 “Safety devices for protection against excessive pressure. Safety valves”

EN 12516-3 “Valves-Shell design strenght. Experimental method”

EN 13463-1 “Non-electrical equipment for use in potentially explosive atmospheres. Basic method and requirements”

EN 13463-5 “Non-electrical equipment for use in potentially explosive atmospheres. Protection by constructional safety ‘c’ “

94/9 EC (ATEX) “Equipment and protective systems intended for use in potentially explosive atmospheres”

97/23 EC (PED) “Pressure equipment directive”