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4820-00-497-7444

Safety Relief Valve

4820004977444 004977444 5120T-6TB-300

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. View more Safety Relief Valve

4820-00-497-7444 VALVE,SAFETY RELIEF 4820004977444 004977444

Managed by United States
NSN Created on 2 Jul 1971
Data Last Changed
January 2023
NATO Update Count
3
NATO Data Quality
STYL Style C8 for 4820-00-497-7444 1/1
NSN 4820-00-497-7444 (Identification) 1/1

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4820-00-497-7444 Demil Restrictions 4820-00-497-7444

DEMIL: A | DEMILI: | CRITICALITY: X | HMIC: N | PMIC: U | EDC: | ADPEC:

4820-00-497-7444 is a Safety Relief Valve that does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. This item is considered a low risk when released from the control of the Department of Defense. The item may still be subject to the requirements of the Export Administration Regulations (EAR) and the Code of Federal Regulations (CFR). This item is not suspected to be hazardous. The precious metals content of this item is unknown.

4820-00-497-7444 HTS and ScheduleB Import and Export 4820-00-497-7444

4820-00-497-7444 End Users End Users 4820-00-497-7444

NASA (G860)
Effective Date:
1 Apr 1991

4820-00-497-7444 Manufacturers Approved Sources 4820-00-497-7444

4820-00-497-7444 Technical Data Datasheet 4820-00-497-7444

Characteristic
Specifications
FIIG
A046B0
Adjustable Pressure Range [CQCY]
+240.0/+360.0 Pounds Per Square Inch
Connection Style [AHNC]
Flared (Tube) 1St End
Connection Style [AHNC]
Gasket Seal(Boss) 2Nd End
Connection Type [AWLS]
Threaded External Tube 1St End
Connection Type [AWLS]
Threaded Internal Boss 2Nd End
Disk Loading Method [ADSU]
Spring
Features Provided [CBBL]
Pressure Tight Outlet Side
Flow Control Device [ADQU]
Poppet
Material [MATT]
Steel Comp 303 Body
Maximum Operating Pressure [CQGM]
2400.0 Pounds Per Square Inch Single Response
Maximum Operating Temp [AEHZ]
450.0 Deg Fahrenheit Single Response
Nominal Outside Diameter Tube Accommodated [CWFD]
0.375 Inches 1St End
Nominal Outside Diameter Tube Accommodated [CWFD]
0.375 Inches 2Nd End
Nominal Thread Size [CQJX]
0.562 Inches 1St End
Nominal Thread Size [CQJX]
0.562 Inches 2Nd End
Opening Pressure Setting [CSDC]
300.0 Pounds Per Square Inch
Material Document And Classification [MDCL]
Aisi 303/Sae 30303 Assn Std Single Material Response Body
Seat Angle [CQRB]
37.0 Degrees 1St End
Valve Operation Method [AQLR]
Automatic
Style Designator [STYL]
Straight Thru Note: To Be Used For Valve Bodies Of One Section Only.
Thread Class [AAJD]
3A 1St End
Thread Class [AAJD]
3B 2Nd End
Thread Direction [AAJF]
Right-Hand 1St End
Thread Direction [AAJF]
Right-Hand 2Nd End
Thread Series Designator [THSD]
Unf 1St End
Thread Series Designator [THSD]
Unjf All Ends

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4820-00-497-7444 Freight Data Freight Information 4820-00-497-7444

4820-00-497-7444 has freight characteristics.. 4820-00-497-7444 has a variance between NMFC and UFC when transported by rail and the description should be consulted.

4820-00-497-7444 Packaging Data Packaging Data 4820-00-497-7444

Responsible Activity
Packaging Data Source
Primary Inventory Control Activity (PICA)
Packaging Data does not meet current MIL-STD-2073-1E

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Preservative Coating Only
Any Suitable Process
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Any Suitable Container
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