Brass Unloader Check Valve/ THREAD CLASS: 3A 2ND END THREAD DIRECTION: RIGHT-HAND ALL ENDS FLOW CONTROL DEVICE: DISK MAXIMUM OPERATING TEMP: 450.0 DEG FAHRENHEIT SINGLE RESPONSE END ITEM IDENTIFICATION: F-4 AIRCRAFT SUPPORT EQUIPMENT. CONNECTION STYLE: B46B PLAIN 1ST END CONNECTION STYLE: B46A PLAIN 2ND END VALVE OPERATION METHOD: AUTOMATIC CONNECTION TYPE: THREADED EXTERNAL PIPE 1ST END CONNECTION TYPE: THREADED EXTERNAL TUBE 2ND END MOUNTING POSITION: HORIZONTAL THREAD QUANTITY PER INCH: 16 2ND END MAXIMUM OPERATING PRESSURE: 250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE NOMINAL THREAD SIZE: 0.375 INCHES 1ST END NOMINAL THREAD SIZE: 0.750 INCHES 2ND END CRITICALITY CODE JUSTIFICATION: FEAT SPECIAL FEATURES: WEAPON SYSTEM ESSENTIAL MATERIAL: COPPER ALLOY BODY MEDIA FOR WHICH DESIGNED: AIR SINGLE RESPONSE STYLE DESIGNATOR: A3 STRAIGHT THRU THREAD SERIES DESIGNATOR: NPT 1ST END THREAD SERIES DESIGNATOR: UNJ 2ND END