The Valve,div.36 in., cataloged under National Stock Number 4470-01-331-8481, is classified within Federal Supply Class 4470 (Nuclear Reactors) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4470-01-331-8481
Item Name
Valve,div.36 in.
FSC / FSG
4470 / 44 — Nuclear Reactors
Status
ACTIVE
Criticality Code Justification
ZZZY
Reference Number Differentiating Characteristics
SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL F — Mutilate — Cut
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
C
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
501-6603013 ASSY98
3/9Design control — primary reference
C M Industries Inc Dba Custom Marine Sales
No interchangeability data on file.
Other items in FSC 4470 — Nuclear Reactors
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4470-00-001-4386
4470-00-001-4386 · Item name not on file
4470-00-001-4387
SEAL RING,NUCLEAR COOLANT SYSTEM
4470-00-001-4388
4470-00-001-4388 · Item name not on file
4470-00-001-4390
SEAL RING,NUCLEAR COOLANT SYSTEM
4470-00-001-4391
4470-00-001-4391 · Item name not on file
4470-00-001-4392
4470-00-001-4392 · Item name not on file
4470-00-001-4393
4470-00-001-4393 · Item name not on file
4470-00-001-4394
4470-00-001-4394 · Item name not on file
Frequently Asked Questions
What is NSN 4470-01-331-8481?
NSN 4470-01-331-8481 is a Valve,div.36 in., classified under FSC 4470, Nuclear Reactors. Status: active.
What are the specifications of 4470-01-331-8481?
Key specifications for 4470-01-331-8481: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: SELECTED AND TESTED FOR NUCLEAR PROPULSION PLANT SYSTEMS. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4470-01-331-8481 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.
What is the DEMIL code for NSN 4470-01-331-8481?
NSN 4470-01-331-8481 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.