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Restrictor Check Valve NSN 4820-00-158-9975

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 4820-00-158-9975 NSN: 4820-00-158-9975

Features and Characteristics

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Aperture Diameter
0.375 inches
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
Flared (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Mounting Position
Horizontal or vertical
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.562 inches all ends
Seat Angle
37.0 degrees all ends
Material
Steel comp 630 flow control device
Material Specification
Mil-p-25732 military specification single material response packing
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Style Designator
Straight thru
Thread Series Designator
Unf all ends
FSC
4820 Nonpowered Valves
NIIN
001589975
NSN
4820001589975

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
K1251MD6-6
Cage Code:
55469
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481302090
  • NAICS: 332911
  • SITC: 74730
  • Description: Check valves of steel
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-158-9975
What are the manufacturers of nsn 4820001589975?
Does this nsn 4820001589975 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820001589975
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 4820001589975 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820001589975 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820001589975?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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