PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6373-1Valve,regulating,fluid Pressure

Transaero, Inc. · NSN 4820-01-573-6497 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-573-6497 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-573-6497. Primary manufacturer part number: 6373-1.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Transaero, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-573-6497, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Transaero, Inc.. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-573-6497
Primary Part Number6373-1
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTransaero, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
7520-01-207-4169 INTERCHANGEABLE
Marker,tube Type
4720-01-443-71066373-1 INTERCHANGEABLE
Hose Assembly,nonmetallic
Transdigm Inc Div Adelwiggins Group
5340-01-461-1359 INTERCHANGEABLE
Bumper
Cross-Reference Index
Part NumberManufacturer
6373-1 Pneudraulics, Inc. (USA)
6373-1 Boeing Defence Uk Ltd (GBR)
6373-1 PRIMARY Transaero, Inc. (USA)
Related Parts
7520-01-207-4169INTERCHANGEABLE
MARKER,TUBE TYPE
4720-01-443-7106INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
6373-1
5340-01-461-1359INTERCHANGEABLE
BUMPER

Frequently Asked Questions

What is NSN 4820-01-573-6497?

NSN 4820-01-573-6497 is a Valve,regulating,fluid Pressure, manufactured by Transaero, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-573-6497?

NSN 4820-01-573-6497 has 3 cross-referenced part numbers: 6373-1 (Pneudraulics, Inc.), 6373-1 (Boeing Defence Uk Ltd), 6373-1 (Transaero, Inc.).

What NSN replaces 4820-01-573-6497?

There are 3 known substitutes for 4820-01-573-6497: 7520-01-207-4169, 4720-01-443-7106, 5340-01-461-1359. Verify interchangeability with system specifications before substitution.

What are the specifications of 6373-1?

Key specifications for 6373-1: Special Features: ALL METAL PARTS ARE CORROSION RESISTANT STEEL (CRES) EXCEPT THE ORIFICE RETAINING NUTS; OPERATING FLUID, BMS 3-11 HYDRAULIC FLUID (PHOSPHATE ESTER); OPERATING PRESSURE, 3000 (20.68 MPA); TEMPERATURE RANGE, -65 DEGREES F TO 275 DEGREES F (-54 DEGREES C TO 135 DEGREES C); FLOW RATE AT 3000PSID (20.68 MPA DIFFERENTIAL) EITHER DIRECTION; FROM 0 DEGREE TO 160 DEGREES F (-1.8 DEGREES C TO 71 DEGREES C), 8.0 GPM (36.4 LPM) + 25/-5 PERCENT; FROM -65 DEGREES F TO 0 DEGREE F (-54 DEGREE C TO -.8 DEGREE C), 8.0 GPM (36.LPM) +- 25 PERCENT; EMERGENCY BYPASS FLOW RATE, EITHER DIRECTION, 1GPM (4.5 LPM); WEIGHT 1.55 POUNDS; OVERALL LENGTH 5.34 INCHES; OVERALL DIAMETER 1.75 INCHES; FITTINGS 3/4 X 16 UNF, MS33514E8 LBS. 1 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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