The Valve,check, cataloged under National Stock Number 4820-01-339-2121, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tat Technologies Ltd Div Tat Israel. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-339-2121 |
| Primary Part Number | 4201-2 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tat Technologies Ltd Div Tat Israel |
| Status | ACTIVE |
| Flange Shape | ROUND SECOND END |
| Connection Type | FLANGE SECOND END |
| Maximum Operating Temp | 1189.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flange Shape | ROUND FIRST END |
| Connection Type | FLANGE FIRST END |
| Operating Pressure | 90.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| CYLB51643 | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA) |
| 4201-2 PRIMARY | Tat Technologies Ltd Div Tat Israel (ISR) |
| VS2300-130 | Valcor Engineering Corporation (USA) |
| 16VY101001-2 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| 4820PL0625219 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 4201-2 | Tat Technologies Ltd (ISR) |
| 4820PL1655217 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 4820-01-339-2121 is a Valve,check, manufactured by Tat Technologies Ltd Div Tat Israel, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-339-2121 has 7 cross-referenced part numbers: CYLB51643 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc), 4201-2 (Tat Technologies Ltd Div Tat Israel), VS2300-130 (Valcor Engineering Corporation), 16VY101001-2 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), 4820PL0625219 (Jednolity Indeks Materialowy - Uniform Material Index) and 2 more.
There are 12 known substitutes for 4820-01-339-2121: 5930-00-111-8619, 2815-00-150-7406, 2610-00-163-0420 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4201-2: Flange Shape: ROUND SECOND END; Connection Type: FLANGE SECOND END; Maximum Operating Temp: 1189.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flange Shape: ROUND FIRST END. 9 total characteristics are documented in the Federal Logistics Information System.