Milton S-1090-70 1/4" MNPT ASME Safety Valve - 70 PSI Pop off Pressure 1/4" male national pipe thread Pop off pressure of 70 pounds per square inch Air flow of 70 standard cubic feet per minute Made in USA Milton is your number 1 source for Quality Air Accessories Since 1943 Milton has been producing Quality Air Accessories Milton covers automotive, industrial, hardware, agriculture, heavy-duty fleet and MRO markets