Product Details | SAFETY RELIEF VALVE

4820-01-222-7812 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: 559A4DB14, 559A-4DB-14, 807622, 8076221, 807622-1, 4820-01-222-7812, 01-222-7812, 4820012227812, 012227812

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 17 DEC 1985 01-222-7812

Cross Reference | NSN 4820-01-222-7812

Part Number Cage Code Manufacturer
559A-4DB-14 91816 CIRCOR AEROSPACE, INC. DBA CIRCLE SEAL CONTROLS
807622 96214 RAYTHEON COMPANY DBA RAYTHEON
807622-1 96214 RAYTHEON COMPANY DBA RAYTHEON

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Technical Data | NSN 4820-01-222-7812

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 BODY
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-25/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
SURFACE TREATMENT ANODIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
STYLE DESIGNATOR STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED AIR 1ST RESPONSE
MAXIMUM OPERATING TEMP 250.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END
CONNECTION STYLE PLAIN (TUBE) 1ST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 0.250 INCHES 2ND END
THREAD SERIES DESIGNATOR UNS ALL ENDS
NOMINAL THREAD SIZE 0.438 INCHES ALL ENDS
THREAD QUANTITY PER INCH 18 ALL ENDS
THREAD CLASS 3A 1ST END
THREAD DIRECTION RIGHT-HAND ALL ENDS
OPENING PRESSURE SETTING 14.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-222-7812

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 576 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 4820-01-222-7812

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 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