PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H-H-3Valve,regulating,fluid Pressure

Matthews Marine Systems · NSN 4820-01-346-4706 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-346-4706 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-346-4706. Primary manufacturer part number: H-H-3.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • End Connection Quantity: 2
  • Flow Control Device: DISK
  • Media for Which Designed: HYDRAULIC FLUID, MIL-H-5606
  • 1 verified cross-reference
  • Primary manufacturer: Matthews Marine Systems
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-346-4706, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Matthews Marine Systems. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4820-01-346-4706
Primary Part NumberH-H-3
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMatthews Marine Systems
StatusACTIVE
End Connection Quantity2
Flow Control DeviceDISK
Media for Which DesignedHYDRAULIC FLUID, MIL-H-5606
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4720-00-930-9347519-2214 INTERCHANGEABLE
Hose,preformed
Landoll Company, Llc
Cross-Reference Index
Part NumberManufacturer
H-H-3 PRIMARY Matthews Marine Systems (USA)
Related Parts
4720-00-930-9347INTERCHANGEABLE
HOSE,PREFORMED
519-2214

Frequently Asked Questions

What is NSN 4820-01-346-4706?

NSN 4820-01-346-4706 is a Valve,regulating,fluid Pressure, manufactured by Matthews Marine Systems, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-346-4706?

NSN 4820-01-346-4706 has 1 cross-referenced part number: H-H-3 (Matthews Marine Systems).

What NSN replaces 4820-01-346-4706?

There is 1 known substitute for 4820-01-346-4706: 4720-00-930-9347. Verify interchangeability with system specifications before substitution.

What are the specifications of H-H-3?

Key specifications for H-H-3: End Connection Quantity: 2; Flow Control Device: DISK; Media for Which Designed: HYDRAULIC FLUID, MIL-H-5606. 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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