The Retainer,disk,valve, cataloged under National Stock Number 4820-01-191-8570, 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1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-191-8570 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Outside Diameter | 0.156 INCHES NOMINAL 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 |
|---|---|
| A48203-1 ITEM 21 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| A48128 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| A48128 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
| D48203 | D/9 Drawing number reference only Hunt Valve Company Inc Dba Union Flonetics |
| A48203-1 ITEM 21 | 5/9 Secondary reference Hunt Valve Company Inc Dba Union Flonetics |
NSN 4820-01-191-8570 is a Retainer,disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-191-8570: Outside Diameter: 0.156 INCHES NOMINAL IN; Overall Length: 3.062 INCHES NOMINAL 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.