The Valve,check, cataloged under National Stock Number 4820-01-262-9339, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-262-9339 |
| Primary Part Number | 16IN-72-I-H-B-3-H-X |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Core Industries Inc. Dba Mueller Steam Specialty |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 16.000 INCHES IN |
| Nominal Outside Diameter | 20.250 INCHES ALL ENDS IN |
| Face to Face Distance | 7.500 INCHES IN |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | STEEL COMP 316 STEM |
| Material | IRON CAST BODY |
| Material | RUBBER SEAT |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 4.375 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 16IN-72-I-H-B-3-H-X PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| Reference | Meaning |
|---|---|
| AN-16.0-72-DI-C | C/1 Advisory reference — outside the item-of-supply concept Core Industries Inc. Dba Mueller Steam Specialty |
NSN 4820-01-262-9339 is a Valve,check, manufactured by Core Industries Inc. Dba Mueller Steam Specialty, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-262-9339 has 1 manufacturer part number on file: 16IN-72-I-H-B-3-H-X (Core Industries Inc. Dba Mueller Steam Specialty).
Key specifications for 16IN-72-I-H-B-3-H-X: Flow Control Device: DISK; Flange Shape: ROUND ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL. 15 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.