The Disk,valve, cataloged under National Stock Number 4820-01-178-3040, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-178-3040 |
| Primary Part Number | 956-00013 |
| 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 |
NSN 4820-01-178-3040 is a Disk,valve, manufactured by Naval Sea Systems Command Logistics Support Engineering Activity, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-178-3040 has 2 manufacturer part numbers on file: 902-00091 (Naval Sea Systems Command Logistics Support Engineering Activity), 956-00013 (Naval Sea Systems Command Logistics Support Engineering Activity).
Key specifications for 956-00013: Special Features: CLAPPER, P/N 957-00065; O-RING, RUBBER; PIVOT PIN, P/N 902-00089; RETAINING RING, 0.025 IN. OD; SHAFT, COPPER; BUSHING, P/N 902-00088; SLEEVE BUSHING, P/N DRS-0609-3; BUMPER TIP, P/N 902-00092; COTTER PIN, 0.063 IN. BY 0.750 IN., NICKEL COPPER ALLOY; END ITEM 1 1/2 INCH SWING CHECK VALVE, 700 PSI, SOCKET WELD ENDS IN. 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.