PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

188478-0030Seat,valve

Marotta Controls Inc · NSN 4820-01-393-7507 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-393-7507 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-393-7507. Primary manufacturer part number: 188478-0030.
Features
  • Seat,valve — FSC 4820
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
  • Criticality Code Justification: ZZZY
  • 2 verified cross-references
  • Primary manufacturer: Marotta Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-393-7507, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Marotta Controls Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-393-7507
Primary Part Number188478-0030
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMarotta Controls Inc
StatusACTIVE
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-030-5231188478-0030 INTERCHANGEABLE
Support Seat
Marotta Controls Inc
Cross-Reference Index
Part NumberManufacturer
188478-0030 Marotta Controls Inc (USA)
188478-0030CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
4820-01-030-5231INTERCHANGEABLE
SUPPORT SEAT
188478-0030

Frequently Asked Questions

What is NSN 4820-01-393-7507?

NSN 4820-01-393-7507 is a Seat,valve, manufactured by Marotta Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-393-7507?

NSN 4820-01-393-7507 has 2 cross-referenced part numbers: 188478-0030 (Marotta Controls Inc), 188478-0030CP (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 4820-01-393-7507?

There is 1 known substitute for 4820-01-393-7507: 4820-01-030-5231. Verify interchangeability with system specifications before substitution.

What are the specifications of 188478-0030?

Key specifications for 188478-0030: Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330; End Item Identification: VALVE REG; Criticality Code Justification: ZZZY. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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