The Valve,check, cataloged under National Stock Number 4820-01-466-5355, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Republic Asphalt Paving Co Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-466-5355 |
| Primary Part Number | 4L-150 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Republic Asphalt Paving Co Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Style Designator | CROSS |
| Material Document and Classification | AISI 1018 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 1026 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A743 CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | AIR THIRD RESPONSE |
| Media for Which Designed | LIQUID SECOND RESPONSE |
| Media for Which Designed | ETHYLENE GLYCOL FIRST RESPONSE |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL COMP 1018 OR STEEL COMP 1026 BODY |
| Material | STEEL COMP 1018 SEAT |
| 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 |
|---|---|
| 4L-150 PRIMARY | Republic Asphalt Paving Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 4L-150 | C/1 Advisory reference — outside the item-of-supply concept Honeywell Inc Building Services Div |
NSN 4820-01-466-5355 is a Valve,check, manufactured by Republic Asphalt Paving Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-466-5355 has 1 manufacturer part number on file: 4L-150 (Republic Asphalt Paving Co Inc).
Key specifications for 4L-150: Flow Control Device: DISK; Mounting Position: HORIZONTAL OR VERTICAL; Style Designator: CROSS; Material Document and Classification: AISI 1018 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 1026 ASSN STD SINGLE MATERIAL RESPONSE BODY. 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.