The Valve,check, cataloged under National Stock Number 4820-00-365-6256, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-365-6256 |
| Primary Part Number | 3A650 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | CANCELLED |
| Material | STEEL FLOW CONTROL DEVICE |
| Thread Direction | RIGHT-HAND FIRST END |
| Seat Angle | 30.0 DEGREES FIRST END |
| Valve Operation Method | AUTOMATIC |
| Thread Direction | RIGHT-HAND SECOND END |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Flow Control Device | DISK |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Nominal Thread Size | 0.625 INCHES FIRST END IN |
| Material | COPPER ALLOY AND STEEL BODY |
| Connection Style | PLAIN (PIPE) SECOND END |
| Style Designator | STRAIGHT THRU |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Thread Class | 2B FIRST END |
| Thread Series Designator | UNF FIRST END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Disk Loading Method | SPRING |
| Thread Series Designator | NPT SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 30291801 | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| 3A650 | Ingersoll Rand Co (USA) |
| 3A650 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 3A650 | Siemens Energy, Inc. Dba Dresser-Rand (USA) |
| 126940 | Celtrac Corp (USA) |
| 3A650 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 3A650 | Dresser-Rand Co Ingersoll-Rand Opns a Joint Venture (USA) |
NSN 4820-00-365-6256 is a Valve,check, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-365-6256 has 7 cross-referenced part numbers: 30291801 (Ingersoll-Rand Company Dba Ingersoll-Rand), 3A650 (Ingersoll Rand Co), 3A650 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 3A650 (Siemens Energy, Inc. Dba Dresser-Rand), 126940 (Celtrac Corp) and 2 more.
There are 4 known substitutes for 4820-00-365-6256: 2810-00-474-2926, 5331-01-371-7816, 2040-01-486-7066 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3A650: Material: STEEL FLOW CONTROL DEVICE; Thread Direction: RIGHT-HAND FIRST END; Seat Angle: 30.0 DEGREES FIRST END; Valve Operation Method: AUTOMATIC. 20 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-365-6256 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.