The Valve,manual Isolating, cataloged under National Stock Number 4820-01-159-5877, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-159-5877 |
| Item Name | Valve,manual Isolating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | 1.000 INCH IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| P1005048A PIECE | C/1 Advisory reference — outside the item-of-supply concept Golar Metal Inc |
| P1005048APC68 | C/1 Advisory reference — outside the item-of-supply concept Tuthill Corporation Div Coppus Portable Ventilation Division |
| P1005048A | D/9 Drawing number reference only Tuthill Corporation Div Coppus Portable Ventilation Division |
| P1005048ACP68 | 3/9 Design control — primary reference Golar Metal Inc |
| P1005048ACP68 | 5/9 Secondary reference Tuthill Corporation Div Coppus Portable Ventilation Division |
NSN 4820-01-159-5877 is a Valve,manual Isolating, classified under FSC 4820, Valves, Nonpowered. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 4720-01-174-7814, 4730-01-186-8724, 4820-01-187-1964. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-159-5877: General Characteristics Item Description: 1.000 INCH IN. 1 specification is 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.