The Valve,check, cataloged under National Stock Number 4820-01-436-3978, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Core Industries Inc. Dba Mueller Steam Specialty. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-436-3978 |
| Primary Part Number | 10IN-72-HHH-H-W-0 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Core Industries Inc. Dba Mueller Steam Specialty |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Material Document and Classification | ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 10IN-72-HHH-H-W-0 PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
NSN 4820-01-436-3978 is a Valve,check, manufactured by Core Industries Inc. Dba Mueller Steam Specialty, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-436-3978 has 1 manufacturer part number on file: 10IN-72-HHH-H-W-0 (Core Industries Inc. Dba Mueller Steam Specialty).
Key specifications for 10IN-72-HHH-H-W-0: Flow Control Device: DISK; Material Document and Classification: ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; End Item Identification: WAFER STYLE VALVE,10 IN.MODEL 72;MUELLER STEAM SPECIALTY 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.