The Valve,check, cataloged under National Stock Number 4820-01-417-2336, 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. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-417-2336 |
| Primary Part Number | M23-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 6750 ITEM 16 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 68098-01 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| M23-1 PRIMARY | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
NSN 4820-01-417-2336 is a Valve,check, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-417-2336 has 3 manufacturer part numbers on file: 6750 ITEM 16 (Howell Laboratories Inc Dba Howell Laboratories Inc), 68098-01 (Howell Laboratories Inc Dba Howell Laboratories Inc), M23-1 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
3 possible matches (shared part number, not a government interchangeability claim): 3740-01-593-1999, 6910-01-601-6167, 2990-01-602-3967. Verify interchangeability with system specifications before substitution.
Key specifications for M23-1: End Item Identification: DEHYDRATOR MODEL 6750 MK 1 FOR THE 170 FT. PATROL COASTAL (PC-1) CLASS SHIPS FT. 0 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.