The Valve,check, cataloged under National Stock Number 4820-01-351-5829, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is International Valve Corp Dba Check-All Valve Mfg. Co.. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-351-5829 |
| Primary Part Number | FIH-SS-TF-.125-22 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | International Valve Corp Dba Check-All Valve Mfg. Co. |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| 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 | 1.000 INCHES IN |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 2.000 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Face to Face Distance | 0.608 INCHES IN |
| Material | PLASTIC SEAT |
| Material | STEEL CORROSION RESISTING BODY |
| Opening Pressure Setting | 0.1 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.250 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 |
|---|---|
| 099-00134-00 ITEM 102 | Kato Engineering Inc. (USA) |
| FIH-SS-TF-.125-22 PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
| 153-00509-03 | Kato Engineering Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1-F1V30SST-1/8 | C/1 Advisory reference — outside the item-of-supply concept International Valve Corp Dba Check-All Valve Mfg. Co. |
| 1-FIV30SST-1/8 | 5/9 Secondary reference International Valve Corp Dba Check-All Valve Mfg. Co. |
| 1"FIV-15/30-SS-T-1/8 | 5/9 Secondary reference International Valve Corp Dba Check-All Valve Mfg. Co. |
NSN 4820-01-351-5829 is a Valve,check, manufactured by International Valve Corp Dba Check-All Valve Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-351-5829 has 3 manufacturer part numbers on file: 099-00134-00 ITEM 102 (Kato Engineering Inc.), FIH-SS-TF-.125-22 (International Valve Corp Dba Check-All Valve Mfg. Co.), 153-00509-03 (Kato Engineering Inc.).
Key specifications for FIH-SS-TF-.125-22: Flow Control Device: POPPET; Flange Shape: ROUND ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL. 16 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.