Product Details | SAFETY RELIEF VALVE

4820-01-149-4886 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: OMP 3479-1, OMP34791, 1159SCH2261, 1159SCH226-1, 4820-01-149-4886, 01-149-4886, 4820011494886, 011494886

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 21 MAR 1983 01-149-4886

Drawings & Photos | NSN 4820-01-149-4886


Demand History | NSN 4820-01-149-4886

Part Number Request Date QTY Origin
4820-01-149-4886 2017-07-195 1 AU

Cross Reference | NSN 4820-01-149-4886

Part Number Cage Code Manufacturer
1159SCH226-1 26512 NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE
1159SCH226-1 59734 GULFSTREAM AEROSPACE CORPORATION GEORGIA
OMP 3479-1 33068 TRIUMPH ACTUATION SYSTEMS - CONNECTICUT, LLC

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Technical Data | NSN 4820-01-149-4886

Characteristic Specifications
MATERIAL STEEL CORROSION RESISTING OVERALL
STYLE DESIGNATOR A7 ANGLE
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 4100.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 275.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLE G4 GASKET SEAL ALL ENDS
THREAD SERIES DESIGNATOR UNF ALL ENDS
NOMINAL THREAD SIZE 0.437 INCHES ALL ENDS
THREAD CLASS 3B ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SCREW
BONNET ATTACHMENT METHOD INTEGRAL
DISK LOADING METHOD SPRING
FEATURES PROVIDED PRESSURE TIGHT OUTLET SIDE
SPECIAL FEATURES DESIGNED FOR HYDRAULIC FLUID

Restrictions/Controls & Freight Information | NSN 4820-01-149-4886

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.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 127220 PRESSURE REG/RED/RELIEF VALVES NOI
Less than car load rating P 77.5
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code ZS Denmark
ZT
ZU
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable