The Stop,valve, cataloged under National Stock Number 4820-01-151-3523, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Entwistle Company Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Stop,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | The Entwistle Company Llc (CAGE 20722) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-151-3523 |
| Primary Part Number | KT-3225-2 |
| Item Name | Stop,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| KT-3225-2 PRIMARY | The Entwistle Company Llc (USA) |
| KT-3225-1 ITEM 4 | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| KT-3225-1 ITEM4 | 5/9 Secondary reference Entwistle Co the Kenett Hydraulic Systems Div |
| KT-3225-1 | D/9 Drawing number reference only Entwistle Co the Kenett Hydraulic Systems Div |
| KT-3225-2 | 5/9 Secondary reference Entwistle Co the Kenett Hydraulic Systems Div |
NSN 4820-01-151-3523 is a Stop,valve, manufactured by The Entwistle Company Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-151-3523 has 2 manufacturer part numbers on file: KT-3225-2 (The Entwistle Company Llc), KT-3225-1 ITEM 4 (The Entwistle Company Llc).
4 possible matches (shared part number, not a government interchangeability claim): 4320-01-151-3891, 4320-01-151-3892, 4820-01-151-5605. Verify interchangeability with system specifications before substitution.
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.