The Stem,fluid Valve, cataloged under National Stock Number 4820-01-287-5118, 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 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-287-5118 |
| Primary Part Number | 131385S1 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Stem Actuating End Type | ROUNDED |
| Criticality Code Justification | ZZZY |
| Valve Size for Which Designed | 2.500 INCHES IN |
| Material | STEEL COMP 416 |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS THAT ARE UNIQUE TO FOSSIL FUEL POWERED SURFACE SHIPS MAIN STEAM, CATAPULT STEAM, AND HIGH PRESSURE STEAM DRAIN SYSTEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 131385S1 | Naval Inventory Control Point Mechanicsburg (USA) |
| C059759 ITEM 9S1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 057137 ITEM 9S1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 057137 ITEM 9 | 5/1 Secondary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| 059759 ITEM 9 | 5/1 Secondary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| C059759 ITEM 9 | 5/1 Secondary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| 131385 | 3/1 Design control — primary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
NSN 4820-01-287-5118 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-287-5118 has 3 manufacturer part numbers on file: 131385S1 (Naval Inventory Control Point Mechanicsburg), C059759 ITEM 9S1 (Naval Inventory Control Point Mechanicsburg), 057137 ITEM 9S1 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 3010-01-310-4313, 5945-01-433-4669. Verify interchangeability with system specifications before substitution.
Key specifications for 131385S1: Valve Type for Which Designed: GLOBE; Stem Actuating End Type: ROUNDED; Criticality Code Justification: ZZZY; Valve Size for Which Designed: 2.500 INCHES IN. 6 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.
NSN 4820-01-287-5118 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.