Product Details | SAFETY RELIEF VALVE

4820-00-287-2450 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: HL11472SH1197, HL11472SH1-197, HL3830PC97, HL3839PC97, HL3840PC97, HL4434PC97, HL4443PC97, HL4444PC97, HL4557PC97, HL4566PC97, HL4567PC97, HL4704PC97, HL4713PC97, HL4714PC97, HL4875PC97, HL4883PC97, HL4884PC97, HL5521PC236, HL5532PC236, HL5533PC236, HL6063PC236, HL6073PC236, HL6074PC236, HL6178PC236, HL6188PC236, HL6189PC236, HL7108PC236, HL7118PC236, HL7119PC236, VAL763, 1/2 X 3/4 FIG M-23A, 12003PC110, 12014PC110, 12X34FIGM23A, 90G273, 4820-00-287-2450, 00-287-2450, 4820002872450, 002872450

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-287-2450

Drawings & Photos | NSN 4820-00-287-2450


Cross Reference | NSN 4820-00-287-2450

Part Number Cage Code Manufacturer
1/2 X 3/4 FIG M-23A 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
12003PC110 24047 COOPER INDUSTRIES INC DBA COOPER TOOLS
12003PC110 6X081 COOPER INDUSTRIES INDUSTRIAL MACHINERY DIV
12014PC110 24047 COOPER INDUSTRIES INC DBA COOPER TOOLS
12014PC110 6X081 COOPER INDUSTRIES INDUSTRIAL MACHINERY DIV
90G273 24047 COOPER INDUSTRIES INC DBA COOPER TOOLS
90G273 6X081 COOPER INDUSTRIES INDUSTRIAL MACHINERY DIV
HL11472SH1-197 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL3830PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL3839PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL3840PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4434PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4443PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4444PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4557PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4566PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4567PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4704PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4713PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4714PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4875PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4883PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL4884PC97 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL5521PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL5532PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL5533PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL6063PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL6073PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL6074PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL6178PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL6188PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL6189PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL7108PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL7118PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
HL7119PC236 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN
VAL763 93236 DRESSER-RAND CO WORTHINGTON COMPRESSOR OPN

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Technical Data | NSN 4820-00-287-2450

Characteristic Specifications
MATERIAL COPPER ALLOY BODY STEEL CORROSION RESISTING FLOW CONTROL DEVICE NICKEL ALLOY SEAT STEEL STEM
STYLE DESIGNATOR C1 ANGLE
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED AIR 1ST RESPONSE GAS, NATURAL 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 1200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 150.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC OR MANUAL
CONNECTION TYPE THREADED INTERNAL PIPE 1ST END THREADED EXTERNAL PIPE 2ND END
CONNECTION STYLE G9 PLAIN 1ST END G46B PLAIN 2ND END
NOMINAL PIPE SIZE ACCOMMODATED 0.750 INCHES 1ST END 0.500 INCHES 2ND END
THREAD SERIES DESIGNATOR NPT 1ST END NPT 2ND END
NOMINAL THREAD SIZE 0.750 INCHES 1ST END 0.500 INCHES 2ND END
THREAD DIRECTION RIGHT-HAND 1ST END RIGHT-HAND 2ND END
RENEWABLE SEAT RING TYPE THREADED
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD THREADED
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 500.0 TO 700.0 POUNDS PER SQUARE INCH
FEATURES PROVIDED VALVE STEM LOCK SHIELD AND BONNET PACKING AND PRESSURE TIGHT OUTLET SIDE

Restrictions/Controls & Freight Information | NSN 4820-00-287-2450

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
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 B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
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 4820-00-287-2450

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each