The Valve,check, cataloged under National Stock Number 4820-00-916-3509, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Transdigm Inc Div Aero Fluid Products. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-916-3509 |
| Primary Part Number | 326500-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Transdigm Inc Div Aero Fluid Products |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Mounting Facility | BRACKET(S) |
| Mounting Position | VERTICAL |
| Connection Type | FLANGE FIRST END |
| Disk Loading Method | SPRING |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Test Data Document | 81755-CY00003-5-2 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 326500 | Transdigm Inc Div Aero Fluid Products (USA) |
| CY00003-5-2 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| 326500-3 PRIMARY | Transdigm Inc Div Aero Fluid Products (USA) |
NSN 4820-00-916-3509 is a Valve,check, manufactured by Transdigm Inc Div Aero Fluid Products, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-916-3509 has 3 cross-referenced part numbers: 326500 (Transdigm Inc Div Aero Fluid Products), CY00003-5-2 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), 326500-3 (Transdigm Inc Div Aero Fluid Products).
There is 1 known substitute for 4820-00-916-3509: 5920-00-808-8342. Verify interchangeability with system specifications before substitution.
Key specifications for 326500-3: Flow Control Device: DISK; Mounting Facility: BRACKET(S); Mounting Position: VERTICAL; Connection Type: FLANGE FIRST END. 10 total characteristics are documented in the Federal Logistics Information System.