The Drain and Vent Assembly, cataloged under National Stock Number 4820-01-132-0641, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-132-0641 |
| Item Name | Drain and Vent Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF THE FOLLOWING ITEMS; BODY,RETAINER,2 RINGS,VALVE,PLUG,2 O-RINGS,2 PAN HEAD SCREWS,LOCKWIRE; 1.000 IN. IPS SOCKET WELD CONNECTIONS,3000 PSI MAX WORKING PRESSURE 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 |
|---|---|
| 2621-827-05 | D/9 Drawing number reference only U.S. Government activity |
| 2621-827-05ASSYA178 | 3/2 Design control — primary reference U.S. Government activity |
| 18-97-4077 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-132-0641 is a Drain and Vent Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-132-0641: General Characteristics Item Description: CONSISTS OF THE FOLLOWING ITEMS; BODY,RETAINER,2 RINGS,VALVE,PLUG,2 O-RINGS,2 PAN HEAD SCREWS,LOCKWIRE; 1.000 IN. IPS SOCKET WELD CONNECTIONS,3000 PSI MAX WORKING PRESSURE 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.