The Valve,vent, cataloged under National Stock Number 4820-01-017-6772, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kalmar AC Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-017-6772 |
| Primary Part Number | 4908523-6 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| Connection Style | BEADED (HOSE) ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 0.560 INCHES FIRST END IN |
| Nominal Inside Diameter Hose Accommodated | 0.440 INCHES SECOND END IN |
| Connection Type | UNTHREADED EXTERNAL HOSE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS NOTE:TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |
| Valve Size | 0.056 INCHES IN |
| Face to Face Distance | 2.220 INCHES IN |
| Material | STEEL BODY |
| 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 |
|---|---|
| 4908523-6 PRIMARY | Kalmar AC Inc (USA) |
| F401F00273 | Renk America Llc Div Renk America (USA) |
| Reference | Meaning |
|---|---|
| 74908523 | C/1 Advisory reference — outside the item-of-supply concept Kalmar AC Inc |
NSN 4820-01-017-6772 is a Valve,vent, manufactured by Kalmar AC Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-017-6772 has 2 manufacturer part numbers on file: 4908523-6 (Kalmar AC Inc), F401F00273 (Renk America Llc Div Renk America).
Key specifications for 4908523-6: Connection Style: BEADED (HOSE) ALL ENDS; Nominal Inside Diameter Hose Accommodated: 0.560 INCHES FIRST END IN; Nominal Inside Diameter Hose Accommodated: 0.440 INCHES SECOND END IN; Connection Type: UNTHREADED EXTERNAL HOSE ALL ENDS. 8 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.