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4820-00-450-6539
Safety Relief Valve
4820004506539 004506539 4644-1 166L068-3
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
January 2023
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Restrictions 4820-00-450-6539
4820-00-450-6539 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. This item does not contain a precious metal.
Import and Export 4820-00-450-6539
- Schedule B
- Subscribe to View Schedule B
- HTS Code
- Subscribe to View HTS Code
End Users 4820-00-450-6539
- Turkey (ZW01)
- Effective Date:
- 1 Dec 2005
Approved Sources 4820-00-450-6539
- Part Number
- Manufacturer
- Status
- 4644-1
- Manufacturer
- 78357 - Parker-Hannifin Corporation (Active)
- Primary Buy
- Primary Buy
- 166L068-3
- 0W6H8 - Northrop Grumman Systems Corp (Active)
- Vendor Drawing
- Vendor Drawing
- 166L068-3
- 78022 - Northrop Grumman Systems Corporation (Active)
- Obsolete Drawing
- Obsolete Drawing
Datasheet 4820-00-450-6539
- Characteristic
- Specifications
- FIIG
- Specifications
- A046B0
- Connection Style [AHNC]
- Flared (Tube) 1St End
- Connection Type [AWLS]
- Threaded External Tube 1St End
- Disk Loading Method [ADSU]
- Spring
- Flow Control Device [ADQU]
- Poppet
- Material [MATT]
- Aluminum Alloy Body
- Material [MATT]
- Aluminum Alloy Seat
- Nominal Outside Diameter Tube Accommodated [CWFD]
- 0.250 Inches 1St End
- Nominal Thread Size [CQJX]
- 0.437 Inches 1St End
- Opening Pressure Setting [CSDC]
- 1425.0 Pounds Per Square Inch
- Seat Angle [CQRB]
- 37.0 Degrees 1St End
- Valve Operation Method [AQLR]
- Automatic
- Style Designator [STYL]
- Angle
- Surface Treatment Document And Classification [STDC]
- Mil-A-8625 Mil Spec Single Treatment Response
- Surface Treatment [SFTT]
- Anodize
- Thread Class [AAJD]
- 3A 1St End
- Thread Direction [AAJF]
- Right-Hand 1St End
- Thread Quantity Per Inch [CMLP]
- 20 1St End
- Thread Series Designator [THSD]
- Unf 1St End
NATO Stock Numbers Related to 4820-00-450-6539
Freight Information 4820-00-450-6539
4820-00-450-6539 has freight characteristics.It has a National Motor Freight Classification (NMFC) of 127220. A Sub NMFC of X. It has a NMFC Description of PRESSURE REG/RED/RELIEF VALVES NOI. 4820-00-450-6539 is rated as class 77.5 when transported by Less-Than Truckload (LTL) freight. 4820-00-450-6539 is rated as class 77.5 when transported by Less-Than Carload (LCL) rail or ocean freight. It has a Uniform Freight Classification (UFC) number of 64490 which rates the freight between FCL and LCL. 4820-00-450-6539 has a variance between NMFC and UFC when transported by rail and the description should be consulted. It has a Water Commodity Code (WCC) of 594 for ocean manifesting and military sealift. 4820-00-450-6539 is not classified as a special type of cargo when transported by water. 4820-00-450-6539 is not a consolidation and does not exceed 84" in any dimension. It should be compatible with a standard 72" Aircraft Cargo Door when transported by air.