B-1221-E
View detailed technical data, stock status, and sourcing information for: B-1221-E
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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.
inside screw bonnet type, bolted bonnet attachment method, 8 all ends bolt hole quantity, threaded renewable seat ring type, disk flow control device
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
- inside screw
- Bonnet Attachment Method
- bolted
- Renewable Seat Ring Type
- threaded
- Bolt Hole Quantity
- 8 all ends
- Maximum Operating Temp
- 450.0 fahrenheit single response
- Valve Operation Method
- manual
- Flange Shape
- round with holes all ends
- Connection Type
- flange all ends
- Mounting Position
- horizontal or vertical
- Features Provided
- bonnet packing
- Valve Size
- 5.000 inches
- Maximum Operating Pressure
- 150.0 pounds per square inch 1st response
- Maximum Operating Pressure
- 225.0 pounds per square inch 2nd response
- Nominal Outside Diameter
- 10.000 inches all ends
- Face To Face Distance
- 13.000 inches
- Nominal Thickness
- 0.750 inches all ends
- Bolt Hole Nominal Diameter
- 0.875 inches all ends
- Bolt Circle Nominal Diameter
- 8.500 inches all ends
- Flange Face Design
- plain all ends
- Material
- copper alloy 922 body
- Material
- nickel alloy flow control device
- Material
- nickel alloy seat
- Material
- nickel alloy stem
- Material Document And Classification
- qq-c-390,alloy d4 fed spec single material response body
- Media For Which Designed
- steam 1st response
- Media For Which Designed
- water-oil-gas 2nd 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 |
|---|---|
| 1063-NSC-5IN | Stop-Check Valve |
| 1063NSC-500 | Stop-Check Valve |
| B-1221-E | Stop-Check Valve |
| EE-2524 5IN | Stop-Check Valve |
| SC163FM0D | Stop-Check Valve |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 4820-00-138-3870?
Does NSN 4820-00-138-3870 require demilitarization?
Does NSN 4820-00-138-3870 contain precious materials?
Does NSN 4820-00-138-3870 contain hazardous materials?
When the NSN 4820-00-138-3870 was assigned to the Federal Catalog?
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