Brand new, certified 1/4" NPT Threaded 300 PSI Industrial air compressor / tank pressure safety relief valve. Also known as a "Pop Off" or "Blow Off" valve. This relief valve is manufactured in the United States and is stamped with "UV" & "NB" symbols. The relief pressure of this valve is set at 300 PSI and is accurate within + or - 3% of the set pressure. 

Specifications:

This valve will relieve 255 SCFM|
• Valve Inlet Threads: 1/4" Male NPT (measure about 1/2" in diameter) 
• Total Valve Length: 1-3/4" 
• Installation Wrench Size: 11/16"
• Features a silicone rubber soft seat relief valve to prevent leaks 
• Max temperature: 250° F
• Solid Brass Construction
• Top quality made in the U.S.A
• Manufactured by Conrader