The Valve,check, cataloged under National Stock Number 4820-00-064-1974, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ausco Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-064-1974 |
| Primary Part Number | G34 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ausco Inc |
| Status | CANCELLED |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Flow Control Device | POPPET |
| Style Designator | STRAIGHT THRU |
| Material | ALUMINUM ALLOY OVERALL |
| Connection Style | FLARELESS ALL ENDS |
| Thread Class | 3A ALL ENDS A |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Valve Operation Method | AUTOMATIC |
| Thread Series Designator | UNF ALL ENDS |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| G34 PRIMARY | Ausco Inc (USA) |
| 4820PL0143978 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 4820-00-064-1974 is a Valve,check, manufactured by Ausco Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-064-1974 has 2 cross-referenced part numbers: G34 (Ausco Inc), 4820PL0143978 (Jednolity Indeks Materialowy - Uniform Material Index).
There are 2 known substitutes for 4820-00-064-1974: 6685-01-255-0394, 3010-01-290-0494. Verify interchangeability with system specifications before substitution.
Key specifications for G34: Nominal Thread Size: 0.438 INCHES ALL ENDS IN; Disk Loading Method: SPRING; Flow Control Device: POPPET; Style Designator: STRAIGHT THRU. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-064-1974 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.