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Restrictor Check Valve NSN 4820-00-803-2548

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 4820-00-803-2548 NSN: 4820-00-803-2548

Features and Characteristics

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
Flareless 1st end
Connection Type
Threaded external tube 1st end
Mounting Position
Horizontal
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Seat Angle
24.0 degrees 1st end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Special Features
Over-all dim., 2.781 in. Lg, 1.000 in. Across flats
Material
Rubber synthetic packing
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Surface Treatment
Anodize
Style Designator
Angle
Thread Series Designator
Unf 1st end
FSC
4820 Nonpowered Valves
NIIN
008032548
NSN
4820008032548

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1R3444-15-25
Cage Code:
26044
Status:
A
MSDS:
Part Number:
1R3449-15-25
Cage Code:
26044
Status:
A
MSDS:
Part Number:
668067-5
Cage Code:
98897
Status:
A
MSDS:
Part Number:
668374-1
Cage Code:
98897
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 4820-00-803-2548
What are the manufacturers of nsn 4820008032548?
Does this nsn 4820008032548 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008032548
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 4820008032548 contain any precious metals?
No precious metal content.
Does nsn 4820008032548 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008032548?
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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