The Valve,relay,air Pressure, cataloged under National Stock Number 2530-00-756-8903, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-00-756-8903 |
| Item Name | Valve,relay,air Pressure |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| 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 |
| Third End Relationship with Preceding Ends | IDENTICAL WITH SECOND END |
| First End Style Designator | PLAIN |
| Fourth End Connection Type | UNTHREADED INTERNAL PIPE |
| Second End Nominal Pipe Size Accommodated | 0.540 INCHES IN |
| End Connection Quantity | 4 |
| Second End Thread Direction | RIGHT-HAND |
| Fourth End Style Designator | SOCKET |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | NOT ADJUSTABLE |
| Fourth End Nominal Pipe Size Accommodated | 0.580 INCHES IN |
| Fourth End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST, SECOND OR THIRD END |
| First End Nominal Pipe Size Accommodated | 0.840 INCHES IN |
| Material | RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Media for Which Designed | AIR |
| Second End Connection Type | THREADED INTERNAL PIPE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 592695C91 | 3/2 Design control — primary reference U.S. Government activity |
| 997075R91 | 5/9 Secondary reference U.S. Government activity |
| N12916AE | 5/9 Secondary reference General Motors Corp |
| N12916AE | 5/9 Secondary reference Haldex Brake Products Corporation |
| N12916AE | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 237291R91 | 5/9 Secondary reference U.S. Government activity |
NSN 2530-00-756-8903 is a Valve,relay,air Pressure, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
Key specifications for 2530-00-756-8903: Flow Control Device: DIAPHRAGM; 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. 20 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.