The Piston and Valve, cataloged under National Stock Number 4130-00-394-9439, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Johnson Controls Navy Systems, Llc. The record lists 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Piston and Valve |
| FSC / FSG | 4130 — Refrigeration and Air Conditioning Components (FSG 41) |
| Manufacturers | Johnson Controls Navy Systems, Llc (CAGE 66935) |
| Parameter | Value |
|---|---|
| NSN | 4130-00-394-9439 |
| Primary Part Number | S437899 |
| Item Name | Piston and Valve |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 420600PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| 421021PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| 409099PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| S437899 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| 420583PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| 409086PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| 437853PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| 446670 | Johnson Controls Navy Systems, Llc (USA) |
| 420584PC81T090 | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 64-164 | 5/9 Secondary reference Johnson Controls Navy Systems, Llc |
NSN 4130-00-394-9439 is a Piston and Valve, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-00-394-9439 has 9 manufacturer part numbers on file: 420600PC81T090 (Johnson Controls Navy Systems, Llc), 421021PC81T090 (Johnson Controls Navy Systems, Llc), 409099PC81T090 (Johnson Controls Navy Systems, Llc), S437899 (Johnson Controls Navy Systems, Llc), 420583PC81T090 (Johnson Controls Navy Systems, Llc) and 4 more.
6 possible matches (shared part number, not a government interchangeability claim): 5915-00-488-3337, 5120-00-631-5766, 6150-00-941-0316. Verify interchangeability with system specifications before substitution.
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.