The Vent and Drain Assembly, cataloged under National Stock Number 4820-01-126-9211, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-126-9211 |
| Item Name | Vent and Drain Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF ONE BODY CORROSION RESISTANT STEEL QQ-S-763,CL 304,COND A;ONE RETAINER CORROSION RESISTANT STEEL,QQ-S-766 CL 304 COND A;TWO RING P/N MS28782-6 POLYTETRAFLUOROETHYLENE,MIL-R-8791;ONE VALVE NICKEL ALUMINUM BRONZE MIL-B-24059;ONE PLUG 0.438-20 UNF 3A THD NICKEL COPPER,QQ-N-281;ONE O-RING P/N MS28778-4 BUNA-N,MIL-P-5510;ONE O-RING,MS28775-011 SYNTHETIC RUBBER MIL-P-25732;TWO SCREW,P/N MS35215-55 PAN HEAD 0.190-32 UNF 2AX.5L BRASS;AN814,WITH DRILLED HOLES FOR LOCK WIRE;2.000 IN. IPS SOCKET WELD;2000.0 PSI WORKING PRESSURE MAX A |
| 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 ASSY174 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-827-05 | D/9 Drawing number reference only U.S. Government activity |
| 4684619F4 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-126-9211 is a Vent and Drain Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-126-9211: General Characteristics Item Description: CONSISTS OF ONE BODY CORROSION RESISTANT STEEL QQ-S-763,CL 304,COND A;ONE RETAINER CORROSION RESISTANT STEEL,QQ-S-766 CL 304 COND A;TWO RING P/N MS28782-6 POLYTETRAFLUOROETHYLENE,MIL-R-8791;ONE VALVE NICKEL ALUMINUM BRONZE MIL-B-24059;ONE PLUG 0.438-20 UNF 3A THD NICKEL COPPER,QQ-N-281;ONE O-RING P/N MS28778-4 BUNA-N,MIL-P-5510;ONE O-RING,MS28775-011 SYNTHETIC RUBBER MIL-P-25732;TWO SCREW,P/N MS35215-55 PAN HEAD 0.190-32 UNF 2AX.5L BRASS;AN814,WITH DRILLED HOLES FOR LOCK WIRE;2.000 IN. IPS SOCKET WELD;2000.0 PSI WORKING PRESSURE MAX A. 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.