The Valve,check, cataloged under National Stock Number 4820-01-408-9958, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Davco Technology, Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-408-9958 |
| Primary Part Number | T101490 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Davco Technology, Llc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Material | COPPER ALLOY BODY |
| Thread Series Designator | NPTF ALL ENDS |
| 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 |
|---|---|
| 12448555 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| T101490 PRIMARY | Davco Technology, Llc (USA) |
| Reference | Meaning |
|---|---|
| RCSK16929 | 5/9 Secondary reference Am General Llc |
| T101490 | 5/9 Secondary reference Davco Mfg Corp |
| RCSK16929 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4820-01-408-9958 is a Valve,check, manufactured by Davco Technology, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-408-9958 has 2 manufacturer part numbers on file: 12448555 (U S Army Tank Automotive Command Amsta-Im-Mm), T101490 (Davco Technology, Llc).
Key specifications for T101490: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 10 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.