The Valve,check, cataloged under National Stock Number 4820-01-439-7020, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ja Moody Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-439-7020 |
| Primary Part Number | T01-04F-1FFS |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ja Moody Llc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Minimum Operating Temp | -60.0 FAHRENHEIT DEGF |
| Connection Type | FLANGE ALL ENDS |
| Material Document and Classification | ASTM A182 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A351-CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A182 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A351-CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 225.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Material | STEEL COMP 316 BODY |
| 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 |
|---|---|
| T01-04F-1FFS | Ja Moody Llc (USA) |
| T01-04F-1FFS | Ferguson Enterprises Llc (USA) |
| Reference | Meaning |
|---|---|
| T01-04F-1FFS | 3/9 Design control — primary reference Hy-Grade Valve, Inc. |
NSN 4820-01-439-7020 is a Valve,check, manufactured by Ja Moody Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-439-7020 has 2 manufacturer part numbers on file: T01-04F-1FFS (Ja Moody Llc), T01-04F-1FFS (Ferguson Enterprises Llc).
Key specifications for T01-04F-1FFS: Flow Control Device: DISK; Minimum Operating Temp: -60.0 FAHRENHEIT DEGF; Connection Type: FLANGE ALL ENDS; Material Document and Classification: ASTM A182 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A351-CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY. 11 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.