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Restrictor Check Valve NSN 4820-00-053-8751

Item Description

A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.

NSN 4820-00-053-8751 NSN: 4820-00-053-8751

Features and Characteristics

Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Connection Style
Flare (tube) 1st end
Connection Type
Threaded internal tube 1st end
Mounting Position
Horizontal
Thready Qty Per Inch (tpi)
20 2nd end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.438 inches 2nd end
Seat Angle
37.0 degrees 2nd end
Outside Diameter Tube Accommodated
0.250 inches 2nd end
Material
Rubber synthetic packing
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Style Designator
Straight thru
Thread Series Designator
Unf 2nd end
FSC
4820 Nonpowered Valves
NIIN
000538751
NSN
4820000538751

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
2R2043-97
Cage Code:
26044
Status:
A
MSDS:
Part Number:
32-69004-97
Cage Code:
76301
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481309000
  • NAICS: 332911
  • SITC: 74730
  • Description: Check valves of materials other than copper, iron or steel
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-053-8751
What are the manufacturers of nsn 4820000538751?
Does this nsn 4820000538751 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820000538751
A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. it does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
Does nsn 4820000538751 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820000538751 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820000538751?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
20520
FIIG:
A530B0
App. Key:
Cond. Code:
1
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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