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21F-CB2-SC 3IN NS72103CB2S

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21F-CB2-SC 3IN NS72103CB2S
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-01-311-9456
Item Name Code
05485
Assigment Date
12/07/1989 (36 years ago)

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.

disk flow control device, outside screw-yoke bonnet type, bolted bonnet attachment method, 4 all ends bolt hole quantity, 285.0 fahrenheit single response maximum operating temp

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Flow Control Device
disk
Bonnet Type
outside screw-yoke
Bonnet Attachment Method
bolted
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
285.0 fahrenheit single response
Valve Operation Method
manual
Flange Shape
round with holes all ends
Connection Type
flange all ends
Valve Size
3.000 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
Nominal Outside Diameter
7.500 inches all ends
Face To Face Distance
9.500 inches
Nominal Thickness
0.688 inches all ends
Bolt Hole Nominal Diameter
0.625 inches all ends
Bolt Circle Nominal Diameter
6.000 inches all ends
Flange Face Design
raised straight all ends
Raised Face Nominal Height
0.062 inches
Raised Face Nominal Diameter
5.000 inches
Special Features
stop check type
Material
steel body
Material
steel corrosion resisting flow control device
Material
steel corrosion resisting seat
Material
steel corrosion resisting stem
Media For Which Designed
water-oil-gas single response
Style Designator
straight thru flanged ends

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
21F-CB2-SC 3IN NS72103CB2S Globe Valve
NS72103CB2S Globe Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-01-311-9456?
The FSCG of the NSN 4820-01-311-9456 is 4820
Does the NSN 4820-01-311-9456 have a Schedule B code assigned?
Yes, the Schedule B code is 8481803060
Does NSN 4820-01-311-9456 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-01-311-9456 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-311-9456 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-01-311-9456 was assigned to the Federal Catalog?
It was assigned 36 years ago, on Thu, Dec 7, 1989

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