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Stop-check Valve NSN 4820-00-353-7638

Item Description

A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. The valve disk may be spring loaded. It may be inline or cartridge (manifold) design. See also valve (1), lift-check and valve (1), stop-lift-check.

NSN 4820-00-353-7638 NSN: 4820-00-353-7638

Features and Characteristics

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Offset Distance
0.700 inches
Flow Control Device
Poppet
Bonnet Type
Packing retaining
Disk Loading Method
Spring
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
External seat for gasket seal (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external boss all ends
Mounting Facility
Threaded fastener
Mounting Position
Horizontal or vertical
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.437 inches all ends
Material
Steel comp 630 seat
Media For Which Designed
Hydraulic fluid, petroleum base 2nd response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 military specification single treatment response
Style Designator
Offset
Thread Series Designator
Unf all ends
FSC
4820 Nonpowered Valves
NIIN
003537638
NSN
4820003537638

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
2C9552K
Cage Code:
99240
Status:
A
MSDS:
Part Number:
694883-103
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 4820-00-353-7638
What are the manufacturers of nsn 4820003537638?
Does this nsn 4820003537638 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820003537638
A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. in the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. in the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. the valve disk may be spring loaded. it may be inline or cartridge (manifold) design. see also valve (1), lift-check and valve (1), stop-lift-check.
Does nsn 4820003537638 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820003537638 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820003537638?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
05486
FIIG:
A530B0
App. Key:
Cond. Code:
2
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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