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characteristic:  
P/n 90004 - (for 200 psi rated systems)  
P/n 90005 - (for 150 psi rated systems)  
Contains the following components:  
-(2) 1/4 "NPT plug  
-1/4 "NPT drain valve  
-1/4 "NPT locking connector  
-250 psi safety valve (p/n 90004)  
-175 psi safety valve (p/n 90005)