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Restrictor Check Valve NSN 4820-00-824-1271

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 4820-00-824-1271 NSN: 4820-00-824-1271

Features and Characteristics

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
Flareless all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.437 inches all ends
Seat Angle
12.0 degrees all ends
Outside Diameter Tube Accommodated
0.250 inches all ends
Material
Stainless steel flow control device and steel comp 303 flow control device and steel comp 304 flow control device
Material Specification
Qq-a-225/6, alloy 2024 federal specification single material response body
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 2 military specification single treatment response
Style Designator
Straight thru
Thread Series Designator
Unf all ends
FSC
4820 Nonpowered Valves
NIIN
008241271
NSN
4820008241271

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1R0448-3
Cage Code:
26044
Status:
A
MSDS:
Part Number:
215-32320-3
Cage Code:
80378
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 4820-00-824-1271
What are the manufacturers of nsn 4820008241271?
Does this nsn 4820008241271 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008241271
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 4820008241271 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820008241271 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008241271?
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
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