The Clapper Assembly,valve, cataloged under National Stock Number 4820-01-072-1774, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-072-1774 |
| Primary Part Number | NS-3969 FIND 25 |
| Item Name | Clapper Assembly,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| General Characteristics Item Description | ASSEMBLY CONSIST OF 12 ITEMS; 1 EA CLAPPER P/N NS-3969PC3; 1 EA SOUND DAMPENING BUMPER P/N NS-3969PC6; 1 EA BUMPER RETAINING NUT P/N NS-3969PC7; 1 EA BUMPER RETAINING SCREW P/N NS-3969PC8; 1 EA CLAPPER PIN P/N NS-3969PC9; 2 EA CLAPPER PIN BUSHING P/N NS-3969PC10; 2 EA SOUND DAMPENING BUSING P/N NS-3969PC11; 1 EA CLAPPER SEAL P/N NS-3969PC12; 2 EA BUSHING RETAINING RING P/N NS-3969PC14 |
| 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 |
|---|---|
| NS-3969 FIND 25 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| NS-3969 | 5/9 Secondary reference National Oilwell |
| NS-3969 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| NS-3969 FIND 25 | 5/9 Secondary reference National Oilwell |
NSN 4820-01-072-1774 is a Clapper Assembly,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-072-1774 has 1 manufacturer part number on file: NS-3969 FIND 25 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-134-0821, 4820-01-151-3682. Verify interchangeability with system specifications before substitution.
Key specifications for NS-3969 FIND 25: General Characteristics Item Description: ASSEMBLY CONSIST OF 12 ITEMS; 1 EA CLAPPER P/N NS-3969PC3; 1 EA SOUND DAMPENING BUMPER P/N NS-3969PC6; 1 EA BUMPER RETAINING NUT P/N NS-3969PC7; 1 EA BUMPER RETAINING SCREW P/N NS-3969PC8; 1 EA CLAPPER PIN P/N NS-3969PC9; 2 EA CLAPPER PIN BUSHING P/N NS-3969PC10; 2 EA SOUND DAMPENING BUSING P/N NS-3969PC11; 1 EA CLAPPER SEAL P/N NS-3969PC12; 2 EA BUSHING RETAINING RING P/N NS-3969PC14. 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.