The Valve,check, cataloged under National Stock Number 4820-00-865-8663, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ausco Inc. Government technical data includes 17 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-865-8663 |
| Primary Part Number | H33 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Ausco Inc |
| Status | ACTIVE |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Thread Series Designator | UNF ALL ENDS |
| Material | STEEL CORROSION RESISTING BODY |
| Flow Control Device | POPPET |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Thread Class | 3A ALL ENDS A |
| Disk Loading Method | SPRING |
| Nominal Outside Diameter Tube Accommodated | 0.188 INCHES FIRST END IN |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Style Designator | ANGLE |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Material | STEEL CORROSION RESISTING SEAT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| H33 PRIMARY | Ausco Inc (USA) |
NSN 4820-00-865-8663 is a Valve,check, manufactured by Ausco Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-865-8663 has 1 cross-referenced part number: H33 (Ausco Inc).
There are 9 known substitutes for 4820-00-865-8663: 4130-00-203-7596, 5120-00-471-2768, 3120-00-542-0591 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for H33: Operating Pressure: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Thread Size: 0.375 INCHES ALL ENDS IN; Material: STEEL CORROSION RESISTING FLOW CONTROL DEVICE; Thread Series Designator: UNF ALL ENDS. 17 total characteristics are documented in the Federal Logistics Information System.