The Valve,pneumatic Tank, cataloged under National Stock Number 4820-00-516-3331, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Schrader-Bridgeport International Inc Dba Schrader Automotive. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-516-3331 |
| Primary Part Number | 645L-198 |
| Item Name | Valve,pneumatic Tank |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Schrader-Bridgeport International Inc Dba Schrader Automotive |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Core Environmental Protection | CORROSION |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | GASKET SEAL |
| First End Connection Type | THREADED EXTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.125 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | STEEL CORROSION RESISTING SPRING |
| Material | COPPER ALLOY SEAT |
| Second End Connection Type | THREADED EXTERNAL BOSS |
| Commercial Core Length Designator | STANDARD |
| Commercial Spring Tension Rating | HIGH |
| 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 |
|---|---|
| 645L-198 PRIMARY | Schrader-Bridgeport International Inc Dba Schrader Automotive (USA) |
| Reference | Meaning |
|---|---|
| 645E198 | 5/9 Secondary reference Schrader-Bridgeport International Inc Dba Schrader Automotive |
| 645E198 | 5/9 Secondary reference Scovill Inc Schrader Bellows Div |
NSN 4820-00-516-3331 is a Valve,pneumatic Tank, manufactured by Schrader-Bridgeport International Inc Dba Schrader Automotive, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-516-3331 has 1 manufacturer part number on file: 645L-198 (Schrader-Bridgeport International Inc Dba Schrader Automotive).
Key specifications for 645L-198: Flow Control Device: POPPET; Core Environmental Protection: CORROSION; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL. 17 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.