Product Details | SAFETY RELIEF VALVE

4820-01-129-5561 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: 9666, 966600791M, 9666-007-91M, 4820-01-129-5561, 01-129-5561, 4820011295561, 011295561

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 08 APR 1982 01-129-5561

Drawings & Photos | NSN 4820-01-129-5561


Cross Reference | NSN 4820-01-129-5561

Part Number Cage Code Manufacturer
9666 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
9666-007-91M 01343 ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY

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Technical Data | NSN 4820-01-129-5561

Characteristic Specifications
MATERIAL NICKEL ALLOY STEM
STYLE DESIGNATOR C1A ANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE 5.500 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE 5.500 INCHES
VALVE SIZE 2.500 INCHES
FLOW CONTROL DEVICE STEM
MEDIA FOR WHICH DESIGNED OIL 1ST RESPONSE WATER, FRESH 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 425.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE FLANGE ALL ENDS
FLANGE SHAPE ROUND WITH HOLES ALL ENDS
NOMINAL THICKNESS 0.500 INCHES ALL ENDS
BOLT HOLE QUANTITY 6 ALL ENDS
BOLT HOLE NOMINAL DIAMETER 0.562 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER 5.000 INCHES ALL ENDS
FLANGE FACE DESIGN PLAIN 1ST END RECESSED STRAIGHT 2ND END
RECESS NOMINAL DIAMETER 2.710 INCHES 2ND END
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD BOLTED
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 56.0 TO 65.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-129-5561

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: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.
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 671 unknown
Originating Activity Code AX Defense Supply Center Columbus
Columbus, OH 43216-5000
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 4820-01-129-5561

Category Code Description
Cognizance Codes3BNavy-owned stocks of field level repairable 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 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