The Valve,check, cataloged under National Stock Number 4820-01-675-6717, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Smith-Cooper Intl Sharp Valves Div. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-675-6717 |
| Primary Part Number | 2-1/2-25-1-1-4 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Smith-Cooper Intl Sharp Valves Div |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Bolt Circle Nominal Diameter | 5.50 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material Document and Classification | ASTM A216 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A105; ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Bolt Hole Nominal Diameter | 0.75 INCHES ALL ENDS IN |
| Operating Pressure | 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Valve Size | 2.50 INCHES IN |
| Maximum Operating Temp | 100.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 1000.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Nominal Outside Diameter | 7.00 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Face to Face Distance | 8.50 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Raised Face Nominal Diameter | 4.12 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 1.6 MILLIMETERS ALL ENDS MM |
| Nominal Thickness | 0.68 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2.50IN 25114 | Smith-Cooper Intl Sharp Valves Div (USA) |
| 2-1/2-25-1-1-4 PRIMARY | Smith-Cooper Intl Sharp Valves Div (USA) |
NSN 4820-01-675-6717 is a Valve,check, manufactured by Smith-Cooper Intl Sharp Valves Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-675-6717 has 2 manufacturer part numbers on file: 2.50IN 25114 (Smith-Cooper Intl Sharp Valves Div), 2-1/2-25-1-1-4 (Smith-Cooper Intl Sharp Valves Div).
Key specifications for 2-1/2-25-1-1-4: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 5.50 INCHES ALL ENDS IN. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.