The Valve,check, cataloged under National Stock Number 4820-01-540-3453, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-540-3453 |
| Primary Part Number | 12421167-001 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Supplementary Features | LENGTH = 1.592" WIDTH = .625" ORIFICE DIAMETER = .193" |
| Minimum Operating Temp | -45.4 CELSIUS DEGC |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Specification/standard Data | 05047 - ASME Y14.-2000 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 05047 - ASME Y14.M-1994 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 204.4 CELSIUS FIRST RESPONSE DEGC |
| 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 |
|---|---|
| 12421167-001 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| ICV-250-B-FS-3 | Tex-a-Draulics Inc (USA) |
| Reference | Meaning |
|---|---|
| 12421167 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4820-01-540-3453 is a Valve,check, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-540-3453 has 2 manufacturer part numbers on file: 12421167-001 (U S Army Tank Automotive Command Amsta-Im-Mm), ICV-250-B-FS-3 (Tex-a-Draulics Inc).
Key specifications for 12421167-001: Supplementary Features: LENGTH = 1.592" WIDTH = .625" ORIFICE DIAMETER = .193"; Minimum Operating Temp: -45.4 CELSIUS DEGC; Operating Pressure: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Specification/standard Data: 05047 - ASME Y14.-2000 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 05047 - ASME Y14.M-1994 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD. 5 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.