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Stop-check Valve NSN 4820-01-247-9791

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 4820-01-247-9791 NSN: 4820-01-247-9791

Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Outside screw-yoke
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Bolt Hole Quantity
4 all ends
Valve Operation Method
Manual
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Position
Horizontal
Valve Size
3.000 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
7.500 inches all ends
Face To Face Distance
9.000 inches
Thickness
0.625 inches all ends
Bolt Hole Diameter
0.750 inches all ends
Bolt Circle Diameter
6.000 inches all ends
Flange Face Design
Plain all ends
Special Features
Stop check type
Material
Nickel alloy 400 stem
Material Specification
Qq-n-281 federal specification single material response stem
Media For Which Designed
Water-oil-gas 2nd response
Style Designator
Straight through flanged ends
Supplementary Features
This item has been reviewed for asbestos material; the current approved sources, 30263 have indicated their part number contained asbestos prior to 1984, the continue to manufacture the same part number without asbestos material after 1984
Furnished Items And Quantity
1 handwheel
FSC
4820 Nonpowered Valves
NIIN
012479791
NSN
4820012479791

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
ASIB1221E1-3
Cage Code:
30263
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481301090
  • NAICS: 332911
  • SITC: 74730
  • Description: Check valves of copper having a pressure rating of 850 kpa or over
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-247-9791
What are the manufacturers of nsn 4820012479791?
Does this nsn 4820012479791 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012479791
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 4820012479791 contain any precious metals?
No precious metal content.
Does nsn 4820012479791 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012479791?
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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