The Valve,stop-Check, cataloged under National Stock Number 4820-00-202-6821, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-202-6821 |
| Primary Part Number | S4824-3132363ASSYGLBSTPCHK |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Material | COPPER ALLOY 903 BODY |
| Nominal Outside Diameter | 6.125 INCHES FIRST END IN |
| Flow Control Device | DISK |
| Connection Type | FLANGE FIRST END |
| Valve Size | 2.500 INCHES IN |
| Material | COPPER ALLOY 903 FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 2.500 INCHES IN |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thickness | 0.938 INCHES FIRST END IN |
| Flange Face Design | PLAIN FIRST END |
| Reference Number Differentiating Characteristics | ASDIFFERENTIATED BY ITEM NAME AND FLANGE SHAPE STYLE |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Face to Face Distance | 12.500 INCHES IN |
| Material | COPPER ALLOY 903 FLOW CONTROL DEVICE |
| Nominal Outside Diameter | 6.125 INCHES FIRST END IN |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Renewable Seat Ring Type | THREADED |
| Flange Face Design | PLAIN FIRST END |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 SEAT |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Bonnet Type | INSIDE SCREW |
| Bonnet Attachment Method | BOLTED |
| Nominal Thickness | 0.938 INCHES FIRST END IN |
| Reference Number Differentiating Characteristics | ASDIFFERENTIATED BY ITEM NAME AND FLANGE SHAPE STYLE |
| Flange Shape | ROUND FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| S4824-3132363ASSYGLBSTPCHK | Naval Ship Systems Command (USA) |
| 3600-120 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| X1679 | Derbyshire Machine & Tool Co (USA) |
NSN 4820-00-202-6821 is a Valve,stop-Check, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-202-6821 has 3 cross-referenced part numbers: S4824-3132363ASSYGLBSTPCHK (Naval Ship Systems Command), 3600-120 (Electric Boat Corporation Div General Dynamics Electric Boat), X1679 (Derbyshire Machine & Tool Co).
There are 3 known substitutes for 4820-00-202-6821: 4820-00-090-9840, 3455-00-335-3037, 6630-01-546-4107. Verify interchangeability with system specifications before substitution.
Key specifications for S4824-3132363ASSYGLBSTPCHK: Material: COPPER ALLOY 903 BODY; Nominal Outside Diameter: 6.125 INCHES FIRST END IN; Flow Control Device: DISK; Connection Type: FLANGE FIRST END. 30 total characteristics are documented in the Federal Logistics Information System.