Product Details | SAFETY RELIEF VALVE

4820-00-142-1547 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: AA7070D, FF2503B, 4820-00-142-1547, 00-142-1547, 4820001421547, 001421547

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-142-1547

Drawings & Photos | NSN 4820-00-142-1547


Cross Reference | NSN 4820-00-142-1547

Part Number Cage Code Manufacturer
AA7070D 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
FF2503B 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY

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Technical Data | NSN 4820-00-142-1547

Characteristic Specifications
MATERIAL STEEL UNS J03008 BODY NICKEL ALLOY FLOW CONTROL DEVICE NICKEL ALLOY SEAT NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-15083 MIL SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATOR A7A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 3.000 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 3.000 INCHES
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED OIL SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 650.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC OR MANUAL
CONNECTION TYPE FLANGE 1ST END FLANGE 2ND END
FLANGE SHAPE ROUND WITH HOLES 1ST END ROUND WITH HOLES 2ND END
NOMINAL OUTSIDE DIAMETER 4.000 INCHES 1ST END 3.562 INCHES 2ND END
NOMINAL THICKNESS 0.562 INCHES 1ST END 0.375 INCHES 2ND END
BOLT HOLE QUANTITY 4 1ST END 3 2ND END
BOLT HOLE NOMINAL DIAMETER 0.562 INCHES 1ST END 0.562 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER 2.875 INCHES 1ST END 2.438 INCHES 2ND END
FLANGE FACE DESIGN PLAIN 1ST END PLAIN 2ND END
RENEWABLE SEAT RING TYPE THREADED
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD BOLTED
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 276.0 TO 450.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE

Restrictions/Controls & Freight Information | NSN 4820-00-142-1547

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
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 XX
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

Management | NSN 4820-00-142-1547

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesYTERMINAL ITEM #(NON-STOCKED ITEMS) Future procurement is not authorized. No wholesale stock is available for issue. 1. Requisitions will not be processed to the wholesale manager. 2. Internal Service/agency requisitioning may be continued in accordance with the Service/agency requisitioning policies.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each