The Valve,check, cataloged under National Stock Number 4820-01-415-1013, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, 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 | 4820-01-415-1013 |
| Primary Part Number | 6401 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Disk Loading Method | SPRING |
| Mounting Position | HORIZONTAL |
| Thread Class | 3B ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Material | COPPER ALLOY BODY |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 6411 ITEM 11 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 6411 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 6401B-01 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 6401 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
NSN 4820-01-415-1013 is a Valve,check, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-415-1013 has 4 cross-referenced part numbers: 6411 ITEM 11 (Howell Laboratories Inc Dba Howell Laboratories Inc), 6411 (Howell Laboratories Inc Dba Howell Laboratories Inc), 6401B-01 (Howell Laboratories Inc Dba Howell Laboratories Inc), 6401 (Howell Laboratories Inc Dba Howell Laboratories Inc).
There are 12 known substitutes for 4820-01-415-1013: 6625-00-014-6045, 6625-00-025-4841, 5940-00-110-1753 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 6401: Flow Control Device: DISK; Connection Type: THREADED INTERNAL BOSS ALL ENDS; Disk Loading Method: SPRING; End Item Identification: NIMITZ CLASS CVN. 14 total characteristics are documented in the Federal Logistics Information System.