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4820-00-449-3518

Safety Relief Valve

4820004493518 004493518 48A 48A1-4IN70PSI

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

4820-00-449-3518 VALVE,SAFETY RELIEF 4820004493518 004493518

Managed by United States
NSN Created on 18 Feb 1972
Data Last Changed
November 2023
NATO Update Count
9
NATO Data Quality
4820-00-449-3518 VALVE,SAFETY RELIEF 4820004493518 004493518 1/1
NSN 4820-00-449-3518 (Generic Image) 1/1

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4820-00-449-3518 Demil Restrictions 4820-00-449-3518

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

4820-00-449-3518 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.

4820-00-449-3518 End Users End Users 4820-00-449-3518

NASA (G900)
Effective Date:
1 Apr 1991

4820-00-449-3518 Manufacturers Approved Sources 4820-00-449-3518

4820-00-449-3518 Technical Data Datasheet 4820-00-449-3518

Characteristic
Specifications
Connection Style [AHNC]
Plain (Pipe) 1St End
Connection Type [AWLS]
Threaded External Pipe 1St End
Disk Loading Method [ADSU]
Spring
Features Provided [CBBL]
Valve Stem Lock Shield
Flow Control Device [ADQU]
Poppet
Material [MATT]
Copper Alloy Body
Material [MATT]
Copper Alloy Flow Control Device
Material [MATT]
Copper Alloy Seat
Material [MATT]
Copper Alloy Stem
Maximum Operating Pressure [CQGM]
70.0 Pounds Per Square Inch Single Response
Maximum Operating Temp [AEHZ]
60.0 Deg Fahrenheit Single Response
Media For Which Designed [MEDA]
Air Single Response
Nominal Pipe Size Accommodated [AAAR]
0.250 Inches 1St End
Nominal Thread Size [CQJX]
0.250 Inches 1St End
Opening Pressure Setting [CSDC]
70.0 Pounds Per Square Inch
Reference Number Differentiating Characteristics [ZZZY]
As Differentiated By Pressure Setting Data And Valve Size
Valve Operation Method [AQLR]
Automatic Or Manual
Valve Discharge Flow Rate [ADSY]
40.5 Cubic Feet Per Minute
Style Designator [STYL]
Err-090
Thread Direction [AAJF]
Right-Hand 1St End
Thread Quantity Per Inch [CMLP]
18 1St End
Thread Series Designator [THSD]
Npt 1St End

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4820-00-449-3518 Freight Data Freight Information 4820-00-449-3518

4820-00-449-3518 has freight characteristics.. 4820-00-449-3518 has a variance between NMFC and UFC when transported by rail and the description should be consulted.