The Valve,check, cataloged under National Stock Number 4820-00-035-9622, 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 11 specifications, cited from the U.S. Government catalog. The record lists 18 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-035-9622 |
| Primary Part Number | 2730F |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Connection Style | INVERTED FLARE (PIPE) FIRST END |
| Style Designator | STRAIGHT THRU |
| Valve Size | 0.375 INCHES IN |
| Second Connection Face to Centerline Distance | 2.250 INCHES IN |
| Disk Loading Method | SPRING |
| Mounting Facility | BRACKET(S) |
| Face to Face Distance | 3.937 INCHES IN |
| First Connection Face to Centerline Distance | 1.687 INCHES IN |
| Material | COPPER ALLOY 922 BODY |
| 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 |
|---|---|
| 2730F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2501F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2406F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 3469F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2239F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2490F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2169F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2868F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2413F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2957F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2208F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2470F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2316F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| S4824F3112536 PRIMARY | Naval Sea Systems Command (USA) |
| 2389F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2397F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2669F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 2659F PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
NSN 4820-00-035-9622 is a Valve,check, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-035-9622 has 18 manufacturer part numbers on file: 2730F (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 2501F (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 2406F (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 3469F (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 2239F (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa) and 13 more.
Key specifications for 2730F: Flange Shape: ROUND WITH HOLES SECOND END; Flange Face Design: RECESSED STRAIGHT SECOND END; Connection Style: INVERTED FLARE (PIPE) FIRST END; Style Designator: STRAIGHT THRU. 11 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.