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		                        | National Stock Number:
 4820-01-569-1121
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 015691121
 
 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:
 
 | 040489-209 | 56529 | HYDRAULICS INTERNATIONAL, INC. | 
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 Techincal Specification:
 
 | PART NAME ASSIGNED BY CONTROLLING AGENCY | RELIF VALVE |  | SPECIAL FEATURES | INAVY IS RELIEF VALVE. TYPE IS PILOT OPERATED RESPONCE RELIEF VALVE, PRESSURE IS 25-400 PSI, CAVITY IS T-3A (SUN HYDRAULIC), FLOW RATE IS 0-50 GPM, SEAL TYPE IS BUNA-N | 
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