Product Details | SAFETY RELIEF VALVE

4820-01-408-8991 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: NMP1569, NMP1569 L1 , NMP1569A01S0800, NMP1569A01S0800 L1 , NMP1569A01S0800L1, NMP1569A01S0800S1, NMP1569L1, NMP1569S1, 4820-01-408-8991, 01-408-8991, 4820014088991, 014088991

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 28 FEB 1995 01-408-8991

Drawings & Photos | NSN 4820-01-408-8991


Cross Reference | NSN 4820-01-408-8991

Part Number Cage Code Manufacturer
NMP1569 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
NMP1569 L1 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG
NMP1569A01S0800 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
NMP1569A01S0800 L1 03950 NAVAL INVENTORY CONTROL POINT MECHANICSBURG

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Technical Data | NSN 4820-01-408-8991

Characteristic Specifications
MATERIAL STEEL BODY STEEL COMP 630 FLOW CONTROL DEVICE STEEL CORROSION RESISTING SEAT STEEL COMP 416 STEM
MATERIAL DOCUMENT AND CLASSIFICATION ASME SA-216 ASSN STD SINGLE MATERIAL RESPONSE BODY ASTM A564 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE ASME SA-351 ASSN STD SINGLE MATERIAL RESPONSE SEAT ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 10.440 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 8.880 INCHES
FLOW CONTROL DEVICE DISK
MAXIMUM OPERATING PRESSURE 1000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 525.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD MANUAL
CONNECTION TYPE FLANGE 1ST END FLANGE 2ND END
FLANGE SHAPE ROUND WITH HOLES 1ST END ROUND WITH HOLES 2ND END
FLANGE FACE DESIGN RAISED STRAIGHT 1ST END RAISED STRAIGHT 2ND END
DISK LOADING METHOD SPRING
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS QUALITY CONTROLLED IN ACCORDANCE WITH NAVSUP CONTROL INSTRUCTIONS FOR SURF LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATION ZZZY
MANUFACTURERS CODE 01343
DESIGN CONTROL REFERENCE NMP1569A01S0800

Restrictions/Controls & Freight Information | NSN 4820-01-408-8991

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:BMunitions List Item - Mutilation (MUT) to the point of scrap required. (Formerly: Demilitarization not required. Trade Security Controls (TSCs) required at disposition.)
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:SThe item is a non-aviation Critical Safety Item (CSI) whose failure will result in serious damage to equipment or serious injury or death to personnel.
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
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 HD Naval Inventory Control Point
Mechanicsburg, PA 17055-0788
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 4820-01-408-8991

Category Code Description
Cognizance Codes1HConsumable material assigned to NAVICP MECH for inventory management
Naval Inventory Control Point, Mechanicsburg
Special Material IDL1An items that supports either a SUBSAFE or Level 1 system that has undergone the extreme material control and quality assurance techniques that provide objective exidence of its acceptance for its appropriate application. Each item has certification papers (or special markings that provide traceability to the certification) that pedigree its material and physical properties, provide traceability, to manufacturer, contract list and lot, and document the quality assurance system and test requirements applied to the item.
Special Material Content9 Non-Hazardous or Non-Sensitive Item, does not require hazardous or special handling, packaging or precautions
Source of SupplyNRPNAVICP-ERP
700 Robbins Avenue
Philadelphia, PA 19111-5098
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityDField Level Reparables
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each