Product Details | GASEOUS PRODUCTS PRESSURE EQUALIZING VALVE

4820-01-420-3992 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: TA7702020R, TA770-20-20-R, 4820-01-420-3992, 01-420-3992, 4820014203992, 014203992

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 16 OCT 1995 01-420-3992

Drawings & Photos | NSN 4820-01-420-3992


Demand History | NSN 4820-01-420-3992

Part Number Request Date QTY Origin
TA7702020R 2016-02-55 4 United States
TA7702020R 2016-02-47 50 United States
4820-01-420-3992 2014-10-279 2 DIBBS
4820-01-420-3992 2014-09-272 4 DIBBS
4820-01-420-3992 2014-02-40 25 IL

Cross Reference | NSN 4820-01-420-3992

Part Number Cage Code Manufacturer
TA770-20-20-R 08992 AGM CONTAINER CONTROLS INC. DBA A G M

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Technical Data | NSN 4820-01-420-3992

Characteristic Specifications
BODY STYLE A46 SINGLE CONNECTION STRAIGHT THRU
BODY MATERIAL ALUMINUM
FLOW CONTROL DEVICE DISK, FLAT
END CONNECTION QUANTITY 1
FIRST END CONNECTION TYPE THREADED INTERNAL PIPE
FIRST END STYLE DESIGNATOR J10 EXTERNAL SEAT FOR GASKET SEAL
FIRST END NOMINAL PIPE SIZE ACCOMMODATED 2.000 INCHES
FIRST END THREAD DIRECTION RIGHT-HAND
FIRST END THREAD SERIES DESIGNATOR UNS
FIRST END NOMINAL THREAD SIZE 2.000 INCHES
MAXIMUM OPERATING PRESSURE 3.5 POUNDS PER SQUARE INCH
VALVE VENTING DESIGN TYPE ATMOSPHERIC
VALVE RELIEF DESIGN TYPE PRESSURE AND VACUUM

Restrictions/Controls & Freight Information | NSN 4820-01-420-3992

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
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
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.
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
Less than truck load rating P 77.5
Water commodity Code 594 unknown
Originating Activity Code EA
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 4820-01-420-3992

Category Code Description
Stores Account Code1Marine Corps Stock Fund Account Item.
Combat Essentiality Code3Critical for Health and Safety of Personnel. Those parts and components that are required for the health and safety of personnel, and which do not fit the definition of Code 5 or 6 items.
Materiel Management CodeBAll CommoditiesDefense Logistics Agency, (DLA,)
Echelon Management Code2ICP/DSSC Marine Corps-managed Recoverability Code D items and Defense Logistics Agency (DLA)/TACOM/GSA) items which the integrated manager has not decontrolled.
Physical Category Code1Bin
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDMU.S. Marine Corps
Service OrganizationMU.S. Marine Corps
ReparabilityZNonreparable item. When unserviceable, condemn and dispose at the level indicated by the first digit of the maintenance code.
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative