The Vent and Drain Assembly, cataloged under National Stock Number 4820-01-138-9052, 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1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-138-9052 |
| Item Name | Vent and Drain Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | FURNISHED WITH 1 CRES BODY0.500 IPS SKT WELD 3000 PSI; 1 CRES RETAINER; 2 POLYTETRAFLUOROETHYLENE RINGS; 1NIAL BRZ VALVE; 1 NICU PLUG; 1 NICU LOCKWASHER AND 2 BRS PAN-HEAD SCREWS |
| 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 |
|---|---|
| 2621-166-03 | D/9 Drawing number reference only U.S. Government activity |
| 2621-166-03ASSY119 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-138-9052 is a Vent and Drain Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-138-9052: General Characteristics Item Description: FURNISHED WITH 1 CRES BODY0.500 IPS SKT WELD 3000 PSI; 1 CRES RETAINER; 2 POLYTETRAFLUOROETHYLENE RINGS; 1NIAL BRZ VALVE; 1 NICU PLUG; 1 NICU LOCKWASHER AND 2 BRS PAN-HEAD SCREWS. 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.