Product Details | SAFETY RELIEF VALVE

4820-01-027-8920 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: SS8CPA23DC, SS8CPA2-3DC, SS8CPA2DG3, SS-8CPA2-DG-3 , 5205342, 4820-01-027-8920, 01-027-8920, 4820010278920, 010278920

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 21 SEP 1976 01-027-8920

Drawings & Photos | NSN 4820-01-027-8920


Demand History | NSN 4820-01-027-8920

Part Number Request Date QTY Origin
SS-8CPA2-DG-3 2023-11-320 6 DIBBS
4820-01-027-8920 2009-03-61 16 DIBBS
4820-01-027-8920 2008-12-353 7 DIBBS
4820-01-027-8920 2008-12-340 3 DIBBS

Cross Reference | NSN 4820-01-027-8920

Part Number Cage Code Manufacturer
5205342 53711 NAVAL SEA SYSTEMS COMMAND
SS-8CPA2-DG-3 02570 SWAGELOK COMPANY DBA USE CAGE CODE 3T9T9 FOR
SS8CPA2-3DC 02570 SWAGELOK COMPANY DBA USE CAGE CODE 3T9T9 FOR
SS8CPA2-3DC 18034 NUPRO CO

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Technical Data | NSN 4820-01-027-8920

Characteristic Specifications
MATERIAL STEEL COMP 316 BODY STEEL COMP 316 FLOW CONTROL DEVICE RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-763,CLASS 316 FED SPEC SINGLE MATERIAL RESPONSE BODY QQ-S-763,CLASS 316 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
STYLE DESIGNATOR C7 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
MEDIA FOR WHICH DESIGNED WATER-OIL-GAS SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 300.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE ALL ENDS
CONNECTION STYLE G46B PLAIN ALL ENDS
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 0.500 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 3.0 TO 50.0 POUNDS PER SQUARE INCH
SPECIAL FEATURES INSTALLED W/DEFLECTOR CAP

Restrictions/Controls & Freight Information | NSN 4820-01-027-8920

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 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 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 4820-01-027-8920

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