Product Details | GASEOUS PRODUCTS PRESSURE EQUALIZING VALVE

4820-01-220-7680 A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude VALVE, VACUUM BREAKING.

Part Alternates: 1035A0011, 622RG, 4820-01-220-7680, 01-220-7680, 4820012207680, 012207680

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 19 NOV 1985 01-220-7680

Cross Reference | NSN 4820-01-220-7680

Part Number Cage Code Manufacturer
1035A0011 06481 NORTHROP GRUMMAN SYSTEMS CORPORATION
622RG 15939 STRATOTECH CORP DBA STRATOTECH COPRORATION

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Technical Data | NSN 4820-01-220-7680

Characteristic Specifications
BODY STYLE SINGLE CONNECTION STRAIGHT THRU
BODY MATERIAL ALUMINUM
OUTSIDE SURFACE TREATMENT ANODIZED, MIL-A-8625
FLOW CONTROL DEVICE POPPET
END CONNECTION QUANTITY 1
FIRST END CONNECTION TYPE THREADED EXTERNAL BOSS
FIRST END STYLE DESIGNATOR EXTERNAL SEAT FOR GASKET SEAL
FIRST END THREAD CLASS 3A
FIRST END THREAD DIRECTION RIGHT-HAND
FIRST END THREAD SERIES DESIGNATOR UNF
FIRST END NOMINAL THREAD SIZE 0.750 INCHES
MAXIMUM OPERATING PRESSURE 3.0 POUNDS PER SQUARE INCH
TEMP RATING 160.0 DEG FAHRENHEIT
OPENING PRESSURE SETTING 1.5 POUNDS PER SQUARE INCH
VALVE VENTING DESIGN TYPE ATMOSPHERIC
VALVE RELIEF DESIGN TYPE PRESSURE
DISK LOADING METHOD SPRING
FURNISHED ITEMS GASKET AND

Restrictions/Controls & Freight Information | NSN 4820-01-220-7680

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 4820-01-220-7680

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