The Valve,gate, cataloged under National Stock Number 4820-01-149-3321, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-149-3321 |
| Primary Part Number | 2621-902 ASSEMBLY AS 2IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Nominal Pipe Size Accommodated | 2.000 INCHES IN |
| Stem Type | RISING |
| Connection Type | SOCKET, WELD, PIPE |
| Valve Size | 2.000 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Bonnet Attachment Method | UNION |
| 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 |
|---|---|
| 2621-902 ASSEMBLY AS 2IN PRIMARY | The Walworth Company (USA) |
| SS845-1889587ASSYAS2IN | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| 2621-902 ASSEMBLY AS 2IN | 5/9 Secondary reference U.S. Government activity |
| 2621-902 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-149-3321 is a Valve,gate, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-149-3321 has 2 manufacturer part numbers on file: 2621-902 ASSEMBLY AS 2IN (The Walworth Company), SS845-1889587ASSYAS2IN (The Walworth Company).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-154-9695, 4820-01-156-7816, 4820-01-159-0808. Verify interchangeability with system specifications before substitution.
Key specifications for 2621-902 ASSEMBLY AS 2IN: Inlet Relationship with Outlet: IDENTICAL; Nominal Pipe Size Accommodated: 2.000 INCHES IN; Stem Type: RISING; Connection Type: SOCKET, WELD, PIPE. 8 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.