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4820-00-998-2479
Safety Relief Valve
4820009982479 009982479 1602
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
November 2023
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Restrictions 4820-00-998-2479
4820-00-998-2479 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.
End Users 4820-00-998-2479
- NASA (G160)
- Effective Date:
- 1 Apr 1991
Approved Sources 4820-00-998-2479
- Part Number
- Manufacturer
- Status
- 1602
- Manufacturer
- 38056 - Ashcroft Inc (Active)
- Incomplete Reference
- Incomplete Reference
Datasheet 4820-00-998-2479
- Characteristic
- Specifications
- Material [MATT]
- Specifications
- Iron Cast Body
- Material [MATT]
- Steel Corrosion Resisting Flow Control Device
- Material [MATT]
- Steel Corrosion Resisting Seat
- Material [MATT]
- Copper Alloy Stem
- Style Designator [STYL]
- Angle
- Flow Control Device [ADQU]
- Disk
- Media For Which Designed [MEDA]
- Steam Single Response
- Maximum Operating Pressure [CQGM]
- 250.0 Pounds Per Square Inch Single Response
- Maximum Operating Temp [AEHZ]
- 450.0 Deg Fahrenheit Single Response
- Valve Discharge Flow Rate [ADSY]
- 12700.0 Pounds Per Hour
- Valve Operation Method [AQLR]
- Automatic
- Connection Type [AWLS]
- Threaded Internal Pipe 1St End
- Connection Style [AHNC]
- Plain,Optional End(Pipe) 1St End
- Nominal Pipe Size Accommodated [AAAR]
- 3.000 Inches 1St End
- Thread Series Designator [THSD]
- Npt 1St End
- Nominal Thread Size [CQJX]
- 3.000 Inches 1St End
- Thread Quantity Per Inch [CMLP]
- 8 1St End
- Thread Direction [AAJF]
- Right-Hand 1St End
- Disk Loading Method [ADSU]
- Spring
- Opening Pressure Setting [CSDC]
- 125.0 Pounds Per Square Inch
- Features Provided [CBBL]
- Pressure Tight Outlet Side
NATO Stock Numbers Related to 4820-00-998-2479
Freight Information 4820-00-998-2479
4820-00-998-2479 has freight characteristics.. 4820-00-998-2479 has a variance between NMFC and UFC when transported by rail and the description should be consulted.