The Register,air, cataloged under National Stock Number 4520-01-651-6263, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Tuttle and Bailey Div Allied Thermal Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Register,air |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | Tuttle and Bailey Div Allied Thermal Corp (CAGE 7E417); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-651-6263 |
| Primary Part Number | RCV-0-SV-09-09-22-0-0-0-00-AD |
| Item Name | Register,air |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Tuttle and Bailey Div Allied Thermal Corp |
| Status | ACTIVE |
| 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 |
|---|---|
| RCV-0-SV-09-09-22-0-0-0-00-AD PRIMARY | Tuttle and Bailey Div Allied Thermal Corp (USA) |
| 512-8543688-F63 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| G643-9256 | D/9 Drawing number reference only U.S. Government activity |
| 218087751 | 5/2 Secondary reference U.S. Government activity |
NSN 4520-01-651-6263 is a Register,air, manufactured by Tuttle and Bailey Div Allied Thermal Corp, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-651-6263 has 2 manufacturer part numbers on file: RCV-0-SV-09-09-22-0-0-0-00-AD (Tuttle and Bailey Div Allied Thermal Corp), 512-8543688-F63 (Naval Sea Systems Command).
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.