Product Details | SAFETY RELIEF VALVE

4820-01-450-0120 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.

Part Alternates: A50125A1900, A-50125A-1900, 4820-01-450-0120, 01-450-0120, 4820014500120, 014500120

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 23 OCT 1997 01-450-0120

Drawings & Photos | NSN 4820-01-450-0120


Cross Reference | NSN 4820-01-450-0120

Part Number Cage Code Manufacturer
A-50125A-1900 81982 HYDRO-AIRE, INC.

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Technical Data | NSN 4820-01-450-0120

Characteristic Specifications
MATERIAL ALUMINUM ALLOY BODY STEEL CORROSION RESISTING FLOW CONTROL DEVICE ALUMINUM ALLOY SEAT
STYLE DESIGNATOR A1 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
VALVE DISCHARGE FLOW RATE 2.5 GALLONS PER MINUTE
CONNECTION TYPE THREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLE G4 GASKET SEAL ALL ENDS
THREAD SERIES DESIGNATOR UNJF ALL ENDS
THREAD QUANTITY PER INCH 20 ALL ENDS
THREAD CLASS 3B ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
DISK LOADING METHOD SPRING
OPENING PRESSURE SETTING 1900.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED PRESSURE TIGHT OUTLET SIDE

Restrictions/Controls & Freight Information | NSN 4820-01-450-0120

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
No Freight Information