Product Details | SAFETY RELIEF VALVE

4820-00-972-0230 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: HF1664911, HF16649-11 , 10658298, 1664911, 16649-11, 4820-00-972-0230, 00-972-0230, 4820009720230, 009720230

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 28 SEP 1966 00-972-0230

Drawings & Photos | NSN 4820-00-972-0230


Demand History | NSN 4820-00-972-0230

Part Number Request Date QTY Origin
HF16649-11 2021-11-325 19 DIBBS
HF16649-11 2021-03-63 1 DIBBS
HF16649-11 2020-11-310 18 DIBBS
HF16649-11 2020-11-310 1 DIBBS
HF16649-11 2020-02-50 20 DIBBS
HF16649-11 2020-02-36 3 DIBBS
HF16649-11 2020-01-08 17 DIBBS
HF16649-11 2019-06-174 8 DIBBS
HF16649-11 2019-06-156 9 DIBBS
4820-00-972-0230 2016-12-353 6 DIBBS
4820-00-972-0230 2016-12-340 4 DIBBS
4820-00-972-0230 2015-10-281 2 DIBBS
4820-00-972-0230 2013-10-304 2 DIBBS
4820-00-972-0230 2013-01-08 1 DIBBS
4820-00-972-0230 2010-08-242 3 DIBBS
4820-00-972-0230 2009-12-356 4 DIBBS
4820-00-972-0230 2009-05-135 4 DIBBS

Cross Reference | NSN 4820-00-972-0230

Part Number Cage Code Manufacturer
10658298 18876 U S ARMY AVIATION AND MISSILE COMMAND
16649-11 33654 HOWDEN FLUID SYSTEMS
16649-11 58163 MEGGITT (NORTH HOLLYWOOD), INC. DBA MEGGITT CONTROL SYSTEMS
HF16649-11 58163 MEGGITT (NORTH HOLLYWOOD), INC. DBA MEGGITT CONTROL SYSTEMS

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Technical Data | NSN 4820-00-972-0230

Characteristic Specifications
MATERIAL ALUMINUM ALLOY 2024 BODY STEEL CORROSION RESISTING FLOW CONTROL DEVICE ALUMINUM ALLOY 2024 SEAT ALUMINUM ALLOY 2024 STEM
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE SEAT QQ-A-225/6,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE STEM
SURFACE TREATMENT ANODIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE
STYLE DESIGNATOR C4 STRAIGHT THRU
FLOW CONTROL DEVICE BALL
MAXIMUM OPERATING PRESSURE 80.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE 1ST END
CONNECTION STYLE G46B PLAIN 1ST END
NOMINAL PIPE SIZE ACCOMMODATED 0.125 INCHES 1ST END
THREAD SERIES DESIGNATOR NPT 1ST END
NOMINAL THREAD SIZE 0.125 INCHES 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
RENEWABLE SEAT RING TYPE PRESSED-IN

Restrictions/Controls & Freight Information | NSN 4820-00-972-0230

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:QStrategic List Item (SLI). Demilitarization not required. SLI are non-MLI(Munitions List Items) controlled by the U.S. Dept. of Commerce through the Export Administration Regulations (EAR) and indicated on the Commerce Control List (CCL). Each CCL entry is preceded by a four-digit Export Control Commerce Control List Item (CCLI) – MUT to the point of scrap required outside the United States. Inside the United States, MUT is required when the DEMIL integrity code (IC) is “3” and MUT is not required when the DEMIL IC is “6.”
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 SR Air Force Services Agency
San Antonio, TX 78216-4138
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