The Valve,check, cataloged under National Stock Number 4820-01-455-5026, 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 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-455-5026 |
| Primary Part Number | 4.0-72-KHH-4-W |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Core Industries Inc. Dba Mueller Steam Specialty |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A351-CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B-148 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 195.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Mounting Facility | WAFER |
| Material | STEEL COMP 316 STEM |
| Material | ALUMINUM ALLOY BODY |
| Material | RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM SEAT |
| 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 |
|---|---|
| 4.0-72-KHH-4-W PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| AN-4.0-72ALBRZ-E | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
NSN 4820-01-455-5026 is a Valve,check, manufactured by Core Industries Inc. Dba Mueller Steam Specialty, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-455-5026 has 2 manufacturer part numbers on file: 4.0-72-KHH-4-W (Core Industries Inc. Dba Mueller Steam Specialty), AN-4.0-72ALBRZ-E (Core Industries Inc. Dba Mueller Steam Specialty).
Key specifications for 4.0-72-KHH-4-W: Flow Control Device: DISK; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE STEM; Material Document and Classification: ASTM A351-CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE. 14 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.