The Valve,flow Control, cataloged under National Stock Number 4820-01-436-3934, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Entwistle Company Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-436-3934 |
| Primary Part Number | KT-4564-2 |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| KT-4564-2 PRIMARY | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| KT-4564-1-11 | 5/9 Secondary reference Entwistle Co the Kenett Hydraulic Systems Div |
| KT-4564-2 | 3/9 Design control — primary reference Entwistle Co the Kenett Hydraulic Systems Div |
| KT-4564-1 | D/9 Drawing number reference only Entwistle Co the Kenett Hydraulic Systems Div |
NSN 4820-01-436-3934 is a Valve,flow Control, manufactured by The Entwistle Company Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-436-3934 has 1 manufacturer part number on file: KT-4564-2 (The Entwistle Company Llc).
2 possible matches (shared part number, not a government interchangeability claim): 6680-01-437-3404, 4320-01-445-5874. Verify interchangeability with system specifications before substitution.
Key specifications for KT-4564-2: Special Features: HYDRAULIC FLUID MEDIA; End Item Identification: SEAWOLF CLASS SSN; Valve Operation Method: MANUAL. 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.
NSN 4820-01-436-3934 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.