The Valve,solenoid, cataloged under National Stock Number 4810-00-421-7186, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-421-7186 |
| Primary Part Number | 3821-1 |
| Item Name | Valve,solenoid |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Flow Control Device | DISKDISK |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Mounting Position | HORIZONTALHORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRUSTRAIGHT THRU |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Aperture Diameter | 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.125 INCHES ALL ENDS0.125 INCHES ALL ENDS IN |
| Maximum Operating Temp | 77.0 FAHRENHEIT SINGLE RESPONSE77.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSEWATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY BODYCOPPER ALLOY BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICERUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEATCOPPER ALLOY SEAT |
| Thread Series Designator | NPT ALL ENDSNPT ALL ENDS |
| Valve Operation Method | SOLENOIDSOLENOID |
| Flow Control Device Normal Operation Position | CLOSED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3821-1 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 3821BG501 | C/1 Advisory reference — outside the item-of-supply concept Howell Laboratories Inc Dba Howell Laboratories Inc |
| HT8262CM0D110-1 | C/1 Advisory reference — outside the item-of-supply concept Automatic Switch Company Dba Asco |
NSN 4810-00-421-7186 is a Valve,solenoid, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-421-7186 has 1 manufacturer part number on file: 3821-1 (Howell Laboratories Inc Dba Howell Laboratories Inc).
Key specifications for 3821-1: Flow Control Device: DISKDISK; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS; Mounting Position: HORIZONTALHORIZONTAL; Connection Type: THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.