The Valve,check, cataloged under National Stock Number 4820-00-103-8240, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ausco Inc. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-103-8240 |
| Primary Part Number | H149-10 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ausco Inc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | GROOVED (DROP-IN CARTRIDGE) FIRST END |
| Minimum Operating Temp | -65.0 FAHRENHEIT DEGF |
| Style Designator | STRAIGHT THRU DROP-IN CARTRIDGE |
| Material Document and Classification | QQ-S-764,TYPE 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-S-764,TYPE 303-CANCELED FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ARMCO 17-4PHSS ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | PASSIVATE |
| Media for Which Designed | HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE |
| Material | STEEL BODY |
| Material | STEEL SEAT |
| Material | STEEL 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 |
|---|---|
| H149-10 PRIMARY | Ausco Inc (USA) |
NSN 4820-00-103-8240 is a Valve,check, manufactured by Ausco Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-103-8240 has 1 manufacturer part number on file: H149-10 (Ausco Inc).
Key specifications for H149-10: Flow Control Device: POPPET; Connection Style: GROOVED (DROP-IN CARTRIDGE) FIRST END; Minimum Operating Temp: -65.0 FAHRENHEIT DEGF; Style Designator: STRAIGHT THRU DROP-IN CARTRIDGE. 15 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.