The Valve,check, cataloged under National Stock Number 4820-01-439-3313, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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 | 4820-01-439-3313 |
| Primary Part Number | 2779127 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel |
| Status | ACTIVE |
| Opening Pressure Setting | 5.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A ALL ENDS A |
| Disk Loading Method | SPRING |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END |
| Valve Operation Method | AUTOMATIC |
| Material | STEEL BODY |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Style Designator | STRAIGHT THRU |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Flow Control Device | DISK |
| Thread Series Designator | UNF ALL ENDS |
| Seat Angle | 37.0 DEGREES SECOND END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-439-3313 is a Valve,check, manufactured by Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-439-3313 has 2 cross-referenced part numbers: 2779127 (Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel), 608-1003 (Landoll Corporation Dba Landoll Corporation Drexel Division Div Drexel).
There is 1 known substitute for 4820-01-439-3313: 4820-01-296-2964. Verify interchangeability with system specifications before substitution.
Key specifications for 2779127: Opening Pressure Setting: 5.0 POUNDS PER SQUARE INCH LBS; Thread Class: 2A ALL ENDS A; Disk Loading Method: SPRING; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END. 16 total characteristics are documented in the Federal Logistics Information System.