The Valve,relay,air Pressure, cataloged under National Stock Number 2530-01-177-8552, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Sealco Air Controls Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2530-01-177-8552 |
| Primary Part Number | 110139 |
| Item Name | Valve,relay,air Pressure |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Sealco Air Controls Inc |
| Status | ACTIVE |
| First End Thread Series Designator | NPT |
| First End Thread Direction | RIGHT-HAND |
| Second End Nominal Thread Size | 0.375 INCHES IN |
| Second End Relationship with First End | NOT IDENTICAL |
| Third End Relationship with Preceding Ends | IDENTICAL WITH SECOND END |
| First End Style Designator | PLAIN |
| Second End Thread Series Designator | NPT |
| Second End Nominal Pipe Size Accommodated | 0.375 INCHES IN |
| End Connection Quantity | 4 |
| Second End Thread Direction | RIGHT-HAND |
| Second End Style Designator | PLAIN |
| First End Connection Type | THREADED INTERNAL PIPE |
| Fourth End Relationship with Preceding Ends | IDENTICAL WITH SECOND END |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Second End Connection Type | THREADED INTERNAL PIPE |
| First End Nominal Thread Size | 0.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 110139 | Sealco Air Controls Inc (USA) |
| 5085 | Sealco Air Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 5085 | 3/9 Design control — primary reference U.S. Government activity |
| 054-500400 | C/1 Advisory reference — outside the item-of-supply concept Miller Trailers Inc |
NSN 2530-01-177-8552 is a Valve,relay,air Pressure, manufactured by Sealco Air Controls Inc, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-177-8552 has 2 manufacturer part numbers on file: 110139 (Sealco Air Controls Inc), 5085 (Sealco Air Controls Inc).
Key specifications for 110139: First End Thread Series Designator: NPT; First End Thread Direction: RIGHT-HAND; Second End Nominal Thread Size: 0.375 INCHES IN; Second End Relationship with First End: NOT IDENTICAL. 16 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.