The Valve,check, cataloged under National Stock Number 4820-00-940-7941, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Meggitt North Hollywood Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-940-7941 |
| Primary Part Number | 277970 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Meggitt North Hollywood Inc |
| Status | CANCELLED |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Thread Class | 3B ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Flow Control Device | DISK |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNF ALL ENDS |
| Disk Loading Method | SPRING |
| Material | ALUMINUM ALLOY FLOW CONTROL DEVICE |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 277970 | Meggitt North Hollywood Inc (USA) |
| 2-2844-76 | Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA) |
| MS28050-3 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS28050 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 557-80 | Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA) |
| MIL-DTL-6129 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| K1340-3 | Essex Industries, Inc. Dba Essex Industries (USA) |
| VS16206 | Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division (USA) |
NSN 4820-00-940-7941 is a Valve,check, manufactured by Meggitt North Hollywood Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-940-7941 has 8 cross-referenced part numbers: 277970 (Meggitt North Hollywood Inc), 2-2844-76 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), MS28050-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS28050 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 557-80 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems) and 3 more.
There are 8 known substitutes for 4820-00-940-7941: 4820-00-064-4396, 2920-00-075-7432, 5930-00-430-0074 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 277970: Connection Type: THREADED INTERNAL BOSS ALL ENDS; Thread Class: 3B ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS; Valve Operation Method: AUTOMATIC. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-940-7941 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.