NSN 4820-01-393-9906 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-393-9906. Manufacturer of record part number: 803-6397408-PC017.
Material Document and Classification: LOCKHEED-CALIFORNIA CO, C-22-1221 MFR REF SINGLE MATERIAL RESPONSE
Material: PLASTIC POLYAMIDE NYLON
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 4820-01-393-9906
NIIN: 013939906
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 803-6397408-PC017
Manufacturer: Naval Sea Systems Command
General Description
The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-393-9906, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-393-9906
Primary Part Number
803-6397408-PC017
Item Name
Diaphragm,actuator Valve,special
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Material Document and Classification
LOCKHEED-CALIFORNIA CO, C-22-1221 MFR REF SINGLE MATERIAL RESPONSE
Material
PLASTIC POLYAMIDE NYLON
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-395-0517803-6397408-ASSY85POSSIBLE MATCH
TEST FITTING ASSEMB
Possible match (shared part number)Naval Sea Systems Command
4810-01-395-7373803-6397408-PC022POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Naval Sea Systems Command
4730-01-395-8871803-6397408-ASSY82POSSIBLE MATCH
ADAPTER,STRAIGHT,PIPE TO TUBE
Possible match (shared part number)Naval Sea Systems Command
4810-01-396-51066397408 PIECE 23POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Naval Sea Systems Command
4810-01-396-51086397408 PIECE 31POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Naval Sea Systems Command
4810-01-397-2692803-6397408-PC047POSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Naval Sea Systems Command
4810-01-397-2701803-6397408-PC046POSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Naval Sea Systems Command
4820-01-397-7071803-6397408-PC035POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Naval Sea Systems Command
4810-01-397-7364803-6397408-PC051POSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Naval Sea Systems Command
4810-01-397-7378803-6397408-PC049POSSIBLE MATCH
RETAINER,DISK,VALVE
Possible match (shared part number)Naval Sea Systems Command
NSN 4820-01-393-9906 is a Diaphragm,actuator Valve,special, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-393-9906?
NSN 4820-01-393-9906 has 1 manufacturer part number on file: 803-6397408-PC017 (Naval Sea Systems Command).
What NSN replaces 4820-01-393-9906?
12 possible matches (shared part number, not a government interchangeability claim): 4730-01-395-0517, 4810-01-395-7373, 4730-01-395-8871. Verify interchangeability with system specifications before substitution.
What are the specifications of 803-6397408-PC017?
Key specifications for 803-6397408-PC017: Material Document and Classification: LOCKHEED-CALIFORNIA CO, C-22-1221 MFR REF SINGLE MATERIAL RESPONSE; End Item Identification: 1 1/2IN THRU-8IN SIZE,SPRINKLER VALVE AFFF/MAGAZINE;NAVAL SEA SYSTEMS COMMAND IN; Material: PLASTIC POLYAMIDE NYLON. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-393-9906 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.