The Valve,check, cataloged under National Stock Number 4820-01-221-2043, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Preece Inc Decca Valves Div. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-221-2043 |
| Primary Part Number | A1380 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Preece Inc Decca Valves Div |
| Status | ACTIVE |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Class | 3A ALL ENDS A |
| Flow Control Device | DISK |
| Valve Operation Method | AUTOMATIC |
| Thread Quantity Per Inch | 16 ALL ENDS |
| Connection Style | FLARELESS ALL ENDS |
| Seat Angle | 24.0 DEGREES ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A1380 PRIMARY | Preece Inc Decca Valves Div (USA) |
NSN 4820-01-221-2043 is a Valve,check, manufactured by Preece Inc Decca Valves Div, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-221-2043 has 1 cross-referenced part number: A1380 (Preece Inc Decca Valves Div).
There are 5 known substitutes for 4820-01-221-2043: 2520-00-360-8133, 4810-01-317-7824, 5305-01-415-9229 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for A1380: Mounting Position: HORIZONTAL; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS; Maximum Operating Temp: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF. 15 total characteristics are documented in the Federal Logistics Information System.