The Valve,stop-Check, cataloged under National Stock Number 4820-01-102-0384, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corp Div Instrumentation Products Division. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-102-0384 |
| Primary Part Number | 2FV4LR-SSP |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corp Div Instrumentation Products Division |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Supplementary Features | FLOW CONTROL DEVICE: STEM |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.125 INCHES ALL ENDS IN |
| Maximum Operating Temp | 150.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Bonnet Attachment Method | THREADED |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 91T1-1PP | Mcnaughton Dynamics Limited (GBR) |
| 2FV4LR-SSP PRIMARY | Parker-Hannifin Corp Div Instrumentation Products Division (USA) |
| Reference | Meaning |
|---|---|
| 91T1-1PP | 5/9 Secondary reference Norman Filter Company, L.l.c. Dba Norman Filter Co Llc |
| 91T1-1PP | 5/9 Secondary reference U.S. Government activity |
| SM-A-948022-1 | 5/2 Secondary reference U.S. Government activity |
| SM-A-948022 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-102-0384 is a Valve,stop-Check, manufactured by Parker-Hannifin Corp Div Instrumentation Products Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-102-0384 has 2 manufacturer part numbers on file: 91T1-1PP (Mcnaughton Dynamics Limited), 2FV4LR-SSP (Parker-Hannifin Corp Div Instrumentation Products Division).
Key specifications for 2FV4LR-SSP: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Supplementary Features: FLOW CONTROL DEVICE: STEM; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 14 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.