Certified 1/8" Male NPT Threaded 325 PSI 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 325 PSI and is accurate within + or - 3% of the set pressure. 

Specifications:

• This valve will relieve 275 SCFM
• Valve Inlet Threads: 1/8" Male NPT (measure about 3/8" 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