The Tailpiece,valve, cataloged under National Stock Number 4820-01-422-5108, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-422-5108 |
| Primary Part Number | 4385050 PC 75L1 |
| Item Name | Tailpiece,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Design Type | ANGLE |
| Criticality Code Justification | ZZZY |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Material | COPPER ALLOY AND TITANIUM |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 4385050 PC 75L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 803-4385050 PC 75L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 803-4385050L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 4385050 PC 75 | 5/1 Secondary reference Naval Sea Systems Command |
| 803-4385050 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 803-4385050 PC 75 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-422-5108 is a Tailpiece,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-422-5108 has 3 manufacturer part numbers on file: 4385050 PC 75L1 (Naval Inventory Control Point Mechanicsburg), 803-4385050 PC 75L1 (Naval Inventory Control Point Mechanicsburg), 803-4385050L1 (Naval Inventory Control Point Mechanicsburg).
3 possible matches (shared part number, not a government interchangeability claim): 3120-01-550-8881, 5310-01-659-4539, 3120-01-706-9985. Verify interchangeability with system specifications before substitution.
Key specifications for 4385050 PC 75L1: Design Type: ANGLE; Criticality Code Justification: ZZZY; Valve Size for Which Designed: 1.500 INCHES IN; Material: COPPER ALLOY AND TITANIUM. 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.