PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K-391Repair Kit,valve

Metrex Valve Corp. Dba Metrex Valve Corp · NSN 4820-01-572-6373 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-572-6373 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-572-6373. Primary manufacturer part number: K-391.
Features
  • Repair Kit,valve — FSC 4820
  • Valve Size for Which Designed: 8.000 INCHES IN
  • Valve Model Number for Which Designed: EAOCM-816NF2-3W W
  • 1 verified cross-reference
  • Primary manufacturer: Metrex Valve Corp. Dba Metrex Valve Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Repair Kit,valve, cataloged under National Stock Number 4820-01-572-6373, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. Government technical data includes 2 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-572-6373
Primary Part NumberK-391
Item NameRepair Kit,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMetrex Valve Corp. Dba Metrex Valve Corp
StatusACTIVE
Valve Size for Which Designed8.000 INCHES IN
Valve Model Number for Which DesignedEAOCM-816NF2-3W W
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4320-00-779-1323K39-1 INTERCHANGEABLE
Parts Kit,reciprocating Pump
Eaton Aerospace, Llc Dba Jackson South
5945-01-129-3252 INTERCHANGEABLE
Relay,assembly
5310-01-270-71511141900 INTERCHANGEABLE
Nut,cable Drive
W S Darley & Co
5120-01-376-9790K269 INTERCHANGEABLE
Contact Positioner,terminal Crim
Daniels Manufacturing Corporation
Cross-Reference Index
Part NumberManufacturer
K-391 PRIMARY Metrex Valve Corp. Dba Metrex Valve Corp (USA)
Related Parts
4320-00-779-1323INTERCHANGEABLE
PARTS KIT,RECIPROCATING PUMP
K39-1
5945-01-129-3252INTERCHANGEABLE
RELAY,ASSEMBLY
5310-01-270-7151INTERCHANGEABLE
NUT,CABLE DRIVE
1141900
5120-01-376-9790INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
K269

Frequently Asked Questions

What is NSN 4820-01-572-6373?

NSN 4820-01-572-6373 is a Repair Kit,valve, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-572-6373?

NSN 4820-01-572-6373 has 1 cross-referenced part number: K-391 (Metrex Valve Corp. Dba Metrex Valve Corp).

What NSN replaces 4820-01-572-6373?

There are 4 known substitutes for 4820-01-572-6373: 4320-00-779-1323, 5945-01-129-3252, 5310-01-270-7151 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of K-391?

Key specifications for K-391: Special Features: KIT CONTAINS:ORING PLUG, ORING COVER PLATE, ORING, ORING RETAINER SHAFT, ORING SHAFT, WIPER SEAL LWR CYL,POLY SEAL LWR CYL,ORING ORIFICE SEAT; Valve Size for Which Designed: 8.000 INCHES IN; Valve Model Number for Which Designed: EAOCM-816NF2-3W W. 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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