PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4.9025.0Piston,valve

Kaeser Compressors, Inc. · NSN 4820-01-390-8206 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-390-8206 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-390-8206. Primary manufacturer part number: 4.9025.0.
Features
  • Piston,valve — FSC 4820
  • Valve Type for Which Designed: CHECK
  • 1 verified cross-reference
  • Primary manufacturer: Kaeser Compressors, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-390-8206, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Kaeser Compressors, Inc.. Government technical data includes 1 verified specification, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-390-8206
Primary Part Number4.9025.0
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerKaeser Compressors, Inc.
StatusACTIVE
Valve Type for Which DesignedCHECK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5331-00-001-5007 INTERCHANGEABLE
O-Ring
5330-01-071-3359690-250 INTERCHANGEABLE
Seal Special
Meggitt Oregon Inc Dba Meggitt Oregon Inc Div Meggitt Polymers & Composites
6130-01-269-1768490250 INTERCHANGEABLE
Power Supply
Medical Research Laboratories Inc Dba M R L Div Defibrillation Division
Cross-Reference Index
Part NumberManufacturer
4.9025.0 PRIMARY Kaeser Compressors, Inc. (USA)
Related Parts
5331-00-001-5007INTERCHANGEABLE
O-RING
5330-01-071-3359INTERCHANGEABLE
SEAL SPECIAL
690-250
6130-01-269-1768INTERCHANGEABLE
POWER SUPPLY
490250

Frequently Asked Questions

What is NSN 4820-01-390-8206?

NSN 4820-01-390-8206 is a Piston,valve, manufactured by Kaeser Compressors, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-390-8206?

NSN 4820-01-390-8206 has 1 cross-referenced part number: 4.9025.0 (Kaeser Compressors, Inc.).

What NSN replaces 4820-01-390-8206?

There are 3 known substitutes for 4820-01-390-8206: 5331-00-001-5007, 5330-01-071-3359, 6130-01-269-1768. Verify interchangeability with system specifications before substitution.

What are the specifications of 4.9025.0?

Key specifications for 4.9025.0: Valve Type for Which Designed: CHECK. 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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