3890AS000637-01
View detailed technical data, stock status, and sourcing information for: 3890AS000637-01
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Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-01-621-6774
Item Name Code
05488
Assigment Date
09/16/2013 (12 years ago)
poppet flow control device, spring disk loading method, integral bonnet attachment method, right-hand all ends thread direction, inside spring bonnet type
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Direction
- right-hand all ends
- Flow Control Device
- poppet
- Bonnet Type
- inside spring
- Bonnet Attachment Method
- integral
- Disk Loading Method
- spring
- Maximum Operating Temp
- 375.0 fahrenheit single response
- Connection Style
- plain (pipe) all ends
- Nominal Width
- 0.875 inches all ends
- Nominal Length
- 2.56 inches all ends
- Valve Operation Method
- automatic
- Connection Type
- threaded external pipe all ends
- Adjustable Pressure Range
- +3.0 to 50.0 pounds per square inch
- Maximum Operating Pressure
- 2185.0 pounds per square inch 1st response
- Maximum Operating Pressure
- 3000.0 pounds per square inch 2nd response
- Nominal Thread Size
- 0.500 inches all ends
- Part Name Assigned By Controlling Agency
- check valve (bypass)
- Special Features
- former name: nrp,check valve(byp
- Material
- steel corrosion resisting body
- Style Designator
- straight thru note: to be used for valve bodies of one section only.
- Supplementary Features
- set at 40 psi +/- 2 psi; o-rings: fluorocarbon fkm
- Thread Series Designator
- npt all ends
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 1913732 | Safety Relief Valve |
| 3890AS000637-01 | Safety Relief Valve |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 4820-01-621-6774?
The FSCG of the NSN 4820-01-621-6774 is 4820
Does the NSN 4820-01-621-6774 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-621-6774 require demilitarization?
Usml items - mutilation to the point of scrap required worldwide. (note 7).
Does NSN 4820-01-621-6774 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-621-6774 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-01-621-6774 was assigned to the Federal Catalog?
It was assigned 12 years ago, on Mon, Sep 16, 2013
Professional Distribution
Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.
- ITAR Registered
- DDTC Registered
- HAZMAT Certified
- AS9120 Quality Standards
- 100% Quality Inspections
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Pricing
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