The Seat,valve, cataloged under National Stock Number 4820-01-183-5934, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-183-5934 |
| Primary Part Number | 32349-001-3942-101 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa |
| Status | ACTIVE |
| Body Outside Diameter | 5.630 INCHES NOMINAL IN |
| Body Stepped Inside Diameter | 4.121 INCHES NOMINAL FIRST STEP IN |
| Body Stepped Inside Diameter | 5.000 INCHES NOMINAL SECOND STEP IN |
| Style Designator | PLAIN |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 45.000 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 |
|---|---|
| W-5586012 PIECE 17 | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 32349-001-3942-101 PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 32349-001-3974-101 PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 1751-F PC17 | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| Reference | Meaning |
|---|---|
| CV9-S6100-30 PC17 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-183-5934 is a Seat,valve, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-183-5934 has 4 manufacturer part numbers on file: W-5586012 PIECE 17 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 32349-001-3942-101 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 32349-001-3974-101 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 1751-F PC17 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa).
Key specifications for 32349-001-3942-101: Overall Height: 1.015 INCHES NOMINAL IN; Body Outside Diameter: 5.630 INCHES NOMINAL IN; Body Stepped Inside Diameter: 4.121 INCHES NOMINAL FIRST STEP IN; Body Stepped Inside Diameter: 5.000 INCHES NOMINAL SECOND STEP IN. 7 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.