The Valve,check, cataloged under National Stock Number 4820-00-691-3434, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-691-3434 |
| Primary Part Number | F201 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ausco Inc |
| Status | ACTIVE |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Style Designator | STRAIGHT THRU |
| Flow Control Device | POPPET |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Quantity Per Inch | 18 ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Nominal Thread Size | 0.563 INCHES ALL ENDS IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) ALL ENDS |
| Maximum Operating Temp | 500.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| F201 PRIMARY | Ausco Inc (USA) |
NSN 4820-00-691-3434 is a Valve,check, manufactured by Ausco Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-691-3434 has 1 cross-referenced part number: F201 (Ausco Inc).
There are 6 known substitutes for 4820-00-691-3434: 5905-00-400-5969, 5310-00-508-2445, 2540-00-921-5069 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for F201: Mounting Position: HORIZONTAL OR VERTICAL; Style Designator: STRAIGHT THRU; Flow Control Device: POPPET; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE. 15 total characteristics are documented in the Federal Logistics Information System.