The Valve,gate, cataloged under National Stock Number 4820-01-373-5208, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nibco Inc Chemtrol Div. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-373-5208 |
| Primary Part Number | F-639-31 12IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nibco Inc Chemtrol Div |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Flange Face Design | PLAIN |
| Maximum Operating Temp and Media for Which Designed | 550.0 FAHRENHEIT WATER-OIL-GAS DEGF |
| Operating Pressure and Type | 250.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | NONRISING |
| Connection Type | FLANGE, ROUND W/HOLES |
| Valve Size | 12.000 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Bolt Hole Quantity | 12 |
| Flange Diameter | 19.000 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| Face to Face Distance | 14.000 INCHES IN |
| Material | IRON ALLOY BODY |
| Material | COPPER ALLOY SEAT |
| Material | IRON ALLOY DISK |
| Material | SILICON STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| F-639-31 12IN PRIMARY | Nibco Inc Chemtrol Div (USA) |
| Reference | Meaning |
|---|---|
| F-639-31 12IN | 3/9 Design control — primary reference Nibco Inc |
| F-639-31 12IN | 5/9 Secondary reference Nibco Inc |
NSN 4820-01-373-5208 is a Valve,gate, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-373-5208 has 1 manufacturer part number on file: F-639-31 12IN (Nibco Inc Chemtrol Div).
Key specifications for F-639-31 12IN: Inlet Relationship with Outlet: IDENTICAL; Flange Face Design: PLAIN; Maximum Operating Temp and Media for Which Designed: 550.0 FAHRENHEIT WATER-OIL-GAS DEGF; Operating Pressure and Type: 250.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS. 17 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.