The Valve,air Shut Off, cataloged under National Stock Number 4810-00-929-0664, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4810-00-929-0664 |
| Primary Part Number | 634511 |
| Item Name | Valve,air Shut Off |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,3.550 TO 3.580 IN. OD,0.625 TO 0.626 IN. ID,4.003 TO 4.090 IN. LD,0.115 TO 0.125 IN. THK IN |
| 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 |
|---|---|
| 634511 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 8860473-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-00-929-0664 is a Valve,air Shut Off, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-929-0664 has 1 manufacturer part number on file: 634511 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-399-2163. Verify interchangeability with system specifications before substitution.
Key specifications for 634511: General Characteristics Item Description: CRES,3.550 TO 3.580 IN. OD,0.625 TO 0.626 IN. ID,4.003 TO 4.090 IN. LD,0.115 TO 0.125 IN. THK IN; End Item Identification: 4810001718545 692406 VALVE ASSY,AIR SHUT OFF. 1 specification is 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.