The Seat,valve, cataloged under National Stock Number 4820-01-155-5770, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-155-5770 |
| Primary Part Number | 1601-005-E-0001 ITEM66 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Body Outside Diameter | 1.108 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.562 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Seat Angle in Deg | 15.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 1601-005-E-0001 ITEM66 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1601-005-E-0001 | D/9 Drawing number reference only Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| 803-4384536 | D/9 Drawing number reference only U.S. Government activity |
| 803-4384536-4XXX-46MOD6/6NYLON | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-155-5770 is a Seat,valve, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-155-5770 has 1 manufacturer part number on file: 1601-005-E-0001 ITEM66 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
Key specifications for 1601-005-E-0001 ITEM66: Overall Height: 0.469 INCHES NOMINAL IN; Body Outside Diameter: 1.108 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 0.562 INCHES NOMINAL IN. 6 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.