The Cap,valve, cataloged under National Stock Number 4820-01-425-1004, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Red Valve Company, Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-425-1004 |
| Primary Part Number | 2P26-20-2600-1616PO2 |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Red Valve Company, Inc |
| Status | ACTIVE |
| Valve Model Number for Which Designed | 1-1/2 |
| Outside Diameter | 3.750 INCHES NOMINAL IN |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Material | STEEL |
| Attachment Method | THREADED |
| 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 |
|---|---|
| 2P26-20-2600-1616PO2 PRIMARY | Red Valve Company, Inc (USA) |
| Reference | Meaning |
|---|---|
| PC1347-2 | 5/9 Secondary reference Parmatic Pollution Control Corporation Dba Parmatic Filter |
| MOD S1-8-C-4 OWS FIG7-2 NO.9 | 5/9 Secondary reference Parmatic Pollution Control Corporation Dba Parmatic Filter |
| MOD S1-8-C-4 OWS TBL7-3 IDX9 | 5/9 Secondary reference Parmatic Pollution Control Corporation Dba Parmatic Filter |
| PC1347 | 7/9 Vendor item drawing reference Parmatic Pollution Control Corporation Dba Parmatic Filter |
NSN 4820-01-425-1004 is a Cap,valve, manufactured by Red Valve Company, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-425-1004 has 1 manufacturer part number on file: 2P26-20-2600-1616PO2 (Red Valve Company, Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-432-0328. Verify interchangeability with system specifications before substitution.
Key specifications for 2P26-20-2600-1616PO2: Valve Model Number for Which Designed: 1-1/2; Outside Diameter: 3.750 INCHES NOMINAL IN; Valve Size for Which Designed: 1.500 INCHES IN; Special Features: W/ONE HOLE 0.750NPTF CENTRALLY LOCATED; MODIFIED HEXAGON SHAPED FLANGE. 5 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.