The Disk,valve, cataloged under National Stock Number 4820-01-231-4160, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command Logistics Support Engineering Activity. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-231-4160 |
| Primary Part Number | D3810 ASSY B ITEM 23 4IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command Logistics Support Engineering Activity |
| 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 |
|---|---|
| D3810 ASSY B ITEM 23 4IN PRIMARY | Naval Sea Systems Command Logistics Support Engineering Activity (USA) |
| Reference | Meaning |
|---|---|
| D3810 | D/9 Drawing number reference only Naval Sea Systems Command Logistics Support Engineering Activity |
| D3810ASSYBITEM2 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
NSN 4820-01-231-4160 is a Disk,valve, manufactured by Naval Sea Systems Command Logistics Support Engineering Activity, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-231-4160 has 1 manufacturer part number on file: D3810 ASSY B ITEM 23 4IN (Naval Sea Systems Command Logistics Support Engineering Activity).
Key specifications for D3810 ASSY B ITEM 23 4IN: Special Features: ASSEMBLY IS MADE OF CLAPPER 1; BUMPER 1; SCREW,BUMPER 1; NUT,BUMPER,SELF LOCKING 1; PIN,CLAPPER HINGE 1; BUSHING 2; BUSHING,SOUND DAMPENING 2; RING,RETAINER 2; O-RING,CLAPPER 1; CLAPPER STUD 1; End Item Identification: 700 PSI SWING CHECK VALVE. 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.