PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4749-1 ITEM 2Disk,valve

Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc · NSN 4820-01-497-3172 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-497-3172 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-497-3172. Primary manufacturer part number: 4749-1 ITEM 2.
Features
  • Disk,valve — FSC 4820
  • Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
  • Material: STEEL CORROSION RESISTING
  • Media for Which Designed: WATER OR OIL
  • 3 verified cross-references
  • Primary manufacturer: Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-497-3172, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references 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
NSN4820-01-497-3172
Primary Part Number4749-1 ITEM 2
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSure Flow Equipment Inc Div Sure Flow Equipmenrt Inc
StatusACTIVE
Pressure Rating150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
MaterialSTEEL CORROSION RESISTING
Media for Which DesignedWATER OR OIL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-361-197847491 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5905-00-969-68282382693A INTERCHANGEABLE
Resistor,variable,wire Wound,non
Lockheed Martin Corporation Div Rms - Mitchel Field
4820-01-497-3181 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
4749-1 ITEM 2 Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc (USA)
4749-1 Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc (USA)
8402D Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc (USA)
Related Parts
5330-00-361-1978INTERCHANGEABLE
GASKET
47491
5905-00-969-6828INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
2382693A
4820-01-497-3181INTERCHANGEABLE
VALVE,CHECK

Frequently Asked Questions

What is NSN 4820-01-497-3172?

NSN 4820-01-497-3172 is a Disk,valve, manufactured by Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-497-3172?

NSN 4820-01-497-3172 has 3 cross-referenced part numbers: 4749-1 ITEM 2 (Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc), 4749-1 (Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc), 8402D (Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc).

What NSN replaces 4820-01-497-3172?

There are 3 known substitutes for 4820-01-497-3172: 5330-00-361-1978, 5905-00-969-6828, 4820-01-497-3181. Verify interchangeability with system specifications before substitution.

What are the specifications of 4749-1 ITEM 2?

Key specifications for 4749-1 ITEM 2: Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Material: STEEL CORROSION RESISTING; Media for Which Designed: WATER OR OIL; Special Features: 150 PSI.W.O.G.SERVICE. 5 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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