The Plug,rotary,valve, cataloged under National Stock Number 4820-01-428-1707, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-428-1707 |
| Primary Part Number | 45M-492A |
| Item Name | Plug,rotary,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Metrex Valve Corp. Dba Metrex Valve Corp |
| Status | ACTIVE |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY |
| Plug Design | TAPERED |
| 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 |
|---|---|
| 45M-492A PRIMARY | Metrex Valve Corp. Dba Metrex Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| MM-3130B-11M-S ITEM 53 | 5/9 Secondary reference Metrex Valve Corp. Dba Metrex Valve Corp |
| MM-3130B-11M-S | D/9 Drawing number reference only Metrex Valve Corp. Dba Metrex Valve Corp |
NSN 4820-01-428-1707 is a Plug,rotary,valve, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-428-1707 has 1 manufacturer part number on file: 45M-492A (Metrex Valve Corp. Dba Metrex Valve Corp).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-428-1786, 4820-01-428-1788, 4820-01-428-2339. Verify interchangeability with system specifications before substitution.
Key specifications for 45M-492A: Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE; Special Features: ATTACHES TO BOTTOM OF SEAT DISK RETAINER; End Item Identification: METREX VALVE CORP. MM-3130B-TC-11M-S WATER REGULATING VALVE; Material: COPPER ALLOY. 3 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.