The Valve,pneumatic Tank, cataloged under National Stock Number 4820-01-259-7871, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-259-7871 |
| Item Name | Valve,pneumatic Tank |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK, CIRCULAR |
| Core Environmental Protection | HEAT, DRY AND OIL RESISTANT |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | TEE GIVE "ADQL" AND "ADQM" ONLY WHEN FLANGED ALL ENDS |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 3A A |
| Third End Relationship with Preceding Ends | IDENTICAL WITH FIRST END |
| First End Style Designator | FLARED |
| Second End Nominal Pipe Size Accommodated | 0.125 INCHES IN |
| End Connection Quantity | 3 |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Media for Which Designed | REFRIGERANT |
| First End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Second End Connection Type | THREADED EXTERNAL PIPE |
| Furnished Items | CAP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| A-17133 | 5/9 Secondary reference Mueller Brass Co. |
| A-17133 | 3/9 Design control — primary reference Zwick Energy Researach Organization Inc |
NSN 4820-01-259-7871 is a Valve,pneumatic Tank, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-259-7871: Flow Control Device: DISK, CIRCULAR; Core Environmental Protection: HEAT, DRY AND OIL RESISTANT; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL. 19 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.