The Valve,purge, cataloged under National Stock Number 4820-01-527-4388, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Compass Water Solutions, Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-527-4388 |
| Primary Part Number | AVFV1004 |
| Item Name | Valve,purge |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Compass Water Solutions, Inc |
| Status | ACTIVE |
| Functional Description | PURGES AIR FROM HIGH PRESSURE MAINS AND EQUIPMENT IN CLOSED HOT OR COLD WATER SYSTEMS. |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AVFV1004 | Compass Water Solutions, Inc (USA) |
| Reference | Meaning |
|---|---|
| EA79A1004 | 3/9 Design control — primary reference Honeywell Braukmann Inc |
NSN 4820-01-527-4388 is a Valve,purge, manufactured by Compass Water Solutions, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-527-4388 has 1 manufacturer part number on file: AVFV1004 (Compass Water Solutions, Inc).
Key specifications for AVFV1004: Special Features: 3/4 IN. NPT MALE PIPE THREAD WITH 1/2 IN. NPT FEMALE PIPE THREAD CONNECTIONS. IN; Functional Description: PURGES AIR FROM HIGH PRESSURE MAINS AND EQUIPMENT IN CLOSED HOT OR COLD WATER SYSTEMS.; Part Name Assigned by Controlling Agency: EA79 INDUSTRIAL AIR VENT; Material: COPPER ALLOY. 2 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.
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.