The Valve,gate, cataloged under National Stock Number 4820-01-207-5951, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William E Williams Valve Corp. Government technical data includes 22 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-207-5951 |
| Primary Part Number | CG840210 3IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Phase | THREE |
| Inlet Relationship with Outlet | IDENTICAL |
| Flange Face Design | RAISED |
| Stem Type | RISING |
| Connection Type | FLANGE, ROUND W/HOLES |
| Material Document and Classification | ASTM A182 GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A351 GRADE CF3M ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A351 GRADE CF3M ASSN STD SINGLE MATERIAL RESPONSE DISK |
| Material Document and Classification | ASTM A351 GRADE CF3M ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Valve Size | 3.000 INCHES IN |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Bolt Hole Quantity | 4 |
| Flange Diameter | 7.500 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| Face to Face Distance | 8.000 INCHES IN |
| Material | STEEL CORROSION RESISTING STEM |
| Material | STEEL UNS J92800 BODY |
| Material | STEEL UNS J92800 DISK |
| Material | STEEL UNS J92800 SEAT |
| Valve Operation Method | MANUAL |
| Current Rating in Amps | 0.130 |
| 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 |
|---|---|
| CG840210 3IN PRIMARY | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| CG840210 3IN W/O OPERATOR | 5/9 Secondary reference William E Williams Valve Corp |
| CG840210 | D/9 Drawing number reference only William E Williams Valve Corp |
| CG840210 3IN W/ | C/1 Advisory reference — outside the item-of-supply concept William E Williams Valve Corp |
NSN 4820-01-207-5951 is a Valve,gate, manufactured by William E Williams Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-207-5951 has 1 manufacturer part number on file: CG840210 3IN (William E Williams Valve Corp).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-209-2876. Verify interchangeability with system specifications before substitution.
Key specifications for CG840210 3IN: Phase: THREE; Inlet Relationship with Outlet: IDENTICAL; Flange Face Design: RAISED; Stem Type: RISING. 22 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.