NSN 4820-00-090-0979

Part Details | SAFETY RELIEF VALVE

4820-00-090-0979 A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.

Alternate Parts: 631B41827, 631B-4-1/8-27, 631B41827, 631B4-1/8-27, 4820-00-090-0979, 00-090-0979, 4820000900979, 000900979

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
48NOV 29, 197200-090-097905488 ( VALVE, SAFETY RELIEF )
REFERENCE DRAWINGS & PICTURES

ANGLE

Cross Reference | NSN 4820-00-090-0979
Part Number Cage Code Manufacturer
631B-4-1/8-2709990PARKER-HANNIFIN CORPORATIONDBA HYDRAULIC VALVE DIV
631B4-1/8-2786768TELEDYNE INDUSTRIES INCTELEDYNE FLUID SYSTEMS REPUBLIC
Technical Data | NSN 4820-00-090-0979
Characteristic Specifications
SURFACE TREATMENT PASSIVATE
STYLE DESIGNATOR ANGLE
FLOW CONTROL DEVICE POPPET
VALVE OPERATION METHOD AUTOMATIC
BONNET TYPE INSIDE SCREW
BONNET ATTACHMENT METHOD INTEGRAL
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING200.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE115.0 TO 250.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED PRESSURE TIGHT OUTLET SIDE
SPECIAL FEATURESTHE END CONNECTION IDENTIFIED AS THE SECOND END IS THE VALVE INLET
END ITEM IDENTIFICATIONGRUMMAN AIRCRAFT MODEL A10