S-122-0250
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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.
500.0 fahrenheit single response maximum operating temp, disk flow control device, 4 all ends bolt hole quantity, outside screw-yoke bonnet type, bolted bonnet attachment method
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
- 500.0 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
- 2.500 inches
- Maximum Operating Pressure
- 150.0 pounds per square inch single response
- Nominal Outside Diameter
- 7.000 inches all ends
- Face To Face Distance
- 8.500 inches
- Nominal Thickness
- 0.875 inches all ends
- Bolt Hole Nominal Diameter
- 0.750 inches all ends
- Bolt Circle Nominal Diameter
- 5.500 inches all ends
- Flange Face Design
- raised straight all ends
- Raised Face Nominal Height
- 0.062 inches all ends
- Raised Face Nominal Diameter
- 4.125 inches all ends
- Material
- chromium alloy stem
- Material
- cobalt alloy seat
- Material
- cobalt alloy flow control device
- Material
- steel uns j03002 body
- Material Document And Classification
- astm a216 grade wcb assn std single material response body
- Media For Which Designed
- steam single response
- Style Designator
- straight thru flanged ends
- Test Data Document
- "81349-mil-s-901 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
- Nondefinitive Spec/Std Data
- d composition
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 4820-00-436-7754 | No Name Available | 10/01/1976 |
| 4820-01-186-5978 | No Name Available | 01/01/1995 |
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 |
|---|---|
| 152F-3 | Stop-Check Valve |
| 152F-3/7795N0REV/CID882059148 | Stop-Check Valve |
| 152F-3IN DWG 77 | Stop-Check Valve |
| 32719REVCCID882039284 | Stop-Check Valve |
| 73324-1 | Stop-Check Valve |
| 8S-194-5REVA | Stop-Check Valve |
| 8S-194-5STP | Stop-Check Valve |
| F090084C02TS/73324C-B/882037371 | Stop-Check Valve |
| M22052-CDD015/025NS | Stop-Check Valve |
| S-122-0250 | Stop-Check Valve |
| S122-0250/S122-0250REV0882039520 | Stop-Check Valve |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 4820-00-138-3854?
Does the NSN 4820-00-138-3854 have a Schedule B code assigned?
Does NSN 4820-00-138-3854 require demilitarization?
Does NSN 4820-00-138-3854 contain precious materials?
Does NSN 4820-00-138-3854 contain hazardous materials?
When the NSN 4820-00-138-3854 was assigned to the Federal Catalog?
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