The Indicator,pressure, cataloged under National Stock Number 6685-01-522-6731, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Portland Valve Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-522-6731 |
| Primary Part Number | 506-3004-A |
| Item Name | Indicator,pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 506-0024 PC. NO. P1 | Portland Valve Llc (USA) |
| 506-3004-A PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| 506-0024 | D/9 Drawing number reference only Portland Valve Llc |
NSN 6685-01-522-6731 is a Indicator,pressure, manufactured by Portland Valve Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-522-6731 has 2 manufacturer part numbers on file: 506-0024 PC. NO. P1 (Portland Valve Llc), 506-3004-A (Portland Valve Llc).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-523-0793. Verify interchangeability with system specifications before substitution.
Key specifications for 506-3004-A: End Item Identification: VALVE ACTUATOR. 0 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.