The Valve,check, cataloged under National Stock Number 4820-01-508-5473, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-508-5473 |
| Primary Part Number | 4"G15BAVF-W20 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Flange Shape | ROUND ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A494 GR.M-35-1 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM A61 NAVAL BRONZE ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter | 6.880 INCHES ALL ENDS IN |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 2.880 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 4"G15BAVF-W20 PRIMARY | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| CD0028 | D/9 Drawing number reference only Crane Co Div Valve Div |
| 4"G15BAVF-W20 | 5/9 Secondary reference Crane Co Crane Valve and Parts Div |
| CD0028 | 5/9 Secondary reference Crane Co Crane Valve and Parts Div |
NSN 4820-01-508-5473 is a Valve,check, manufactured by Crane Co Div Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-508-5473 has 1 manufacturer part number on file: 4"G15BAVF-W20 (Crane Co Div Valve Div).
Key specifications for 4"G15BAVF-W20: Flange Shape: ROUND ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: FLANGE ALL ENDS. 12 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.