The Disk,valve, cataloged under National Stock Number 4820-01-317-7592, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-317-7592 |
| Primary Part Number | M3188-AH |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| Status | ACTIVE |
| Style Designator | SWING CHECK |
| 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 |
|---|---|
| M1301-9 MPL-1186 ITEM 3 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| M1301-8 MPL-1185 ITEM 3 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| M3188-AH PRIMARY | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| Reference | Meaning |
|---|---|
| M1301-9 MPL-1186 ITEM 3 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| M3188-AH | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| M1301-8 MPL-1185 ITEM 3 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| M3188-AH AND M3 | C/1 Advisory reference — outside the item-of-supply concept Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
NSN 4820-01-317-7592 is a Disk,valve, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-317-7592 has 3 manufacturer part numbers on file: M1301-9 MPL-1186 ITEM 3 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), M1301-8 MPL-1185 ITEM 3 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), M3188-AH (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
Key specifications for M3188-AH: Style Designator: SWING CHECK; 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.