The Valve,check, cataloged under National Stock Number 4820-01-252-0674, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 14 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-252-0674 |
| Primary Part Number | 70652-22801-101 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Valve Operation Method | AUTOMATIC |
| Style Designator | STRAIGHT THRU |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Media for Which Designed | HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Thread Series Designator | UNF ALL ENDS |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL BODY |
| Thread Class | 3B ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Flow Control Device | DISK |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Position | HORIZONTAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4634 | Pneudraulics, Inc. (USA) |
| 70652-22801 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 70652-22801-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 4820-01-252-0674 is a Valve,check, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-252-0674 has 3 cross-referenced part numbers: 4634 (Pneudraulics, Inc.), 70652-22801 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 70652-22801-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
There are 12 known substitutes for 4820-01-252-0674: 5310-00-469-1306, 5310-00-496-4888, 5935-00-723-3950 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 70652-22801-101: Valve Operation Method: AUTOMATIC; Style Designator: STRAIGHT THRU; Connection Type: THREADED INTERNAL BOSS ALL ENDS; Connection Style: GASKET SEAL (BOSS) ALL ENDS. 14 total characteristics are documented in the Federal Logistics Information System.