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		                        | National Stock Number:
 4820-01-570-4933
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 015704933
 
 Description:
 VALVE,RELIEF,PRESSURE AND TEMPER
 
 Detail:
 A VALVE DESIGNED TO RELEASE UNDER EXCESSIVE PRESSURE AND/OR EXCESSIVE TEMPERATURE BY OPENING AT A PREDETERMINED PRESSURE AND/OR TEMPERATURE. THERMOSTATICALLY OPERATED VALVES CLOSE WHEN THE PRESSURE IS RELIEVED OR THE TEMPERATURE IS REDUCED. FUSIBLE PLUG VALVES REQUIRE REPLACEMENT OF THE PLUG. SEE ALSO VALVE, SAFETY RELIEF AND VALVE, REGULATING. TEMPERATURE.
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 Manufacturer Information:
 
 | 4183974 | 75Q65 | OSHKOSH DEFENSE LLC |  | N-1178-EE | 06721 | HALDEX BRAKE PRODUCTS CORPORATION |  | N1178EE | 06721 | HALDEX BRAKE PRODUCTS CORPORATION | 
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 Techincal Specification:
 
 | BODY STYLE | STRAIGHT THRU |  | FLOW CONTROL DEVICE | NEEDLE |  | MATERIAL | COPPER ALLOY  AND STEEL CORROSION RESISTING BODY |  | PART NAME ASSIGNED BY CONTROLLING AGENCY | PRESSURE RELIEF VALVE |  | SPECIAL FEATURES | BODY STYLE: CLOSED; THREAD SIZE: 3/8"; PSI: 175 | 
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