PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4494Valve,relief,pressure and Temper

Plumbersurplus.com Llc Dba Gordian Project · NSN 4820-01-647-6825 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-647-6825 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-647-6825. Primary manufacturer part number: 4494.
Features
  • Valve,relief,pressure and Temper — FSC 4820
  • Temp Rating: 210.0 FAHRENHEIT DEGF
  • Material: COPPER ALLOY BODY
  • 1 verified cross-reference
  • Primary manufacturer: Plumbersurplus.com Llc Dba Gordian Project
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Body construction
General Description

The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-647-6825, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Plumbersurplus.com Llc Dba Gordian Project. 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-647-6825
Primary Part Number4494
Item NameValve,relief,pressure and Temper
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPlumbersurplus.com Llc Dba Gordian Project
StatusACTIVE
Temp Rating210.0 FAHRENHEIT DEGF
MaterialCOPPER ALLOY BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5999-00-035-9024 INTERCHANGEABLE
Contact,electrical
5306-00-151-1972AN23-20 INTERCHANGEABLE
Bolt,clevis
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6680-00-240-567413213E9523-3 INTERCHANGEABLE
Gage Rod,liquid Level
Cecom Lr Center
5330-00-678-4619 INTERCHANGEABLE
Gasket
1650-00-896-8331 INTERCHANGEABLE
Pivot,nutating Plat
6730-01-145-94183354 INTERCHANGEABLE
Projector,still Picture
Bosch Security Systems, Llc
5305-01-155-1817 INTERCHANGEABLE
Screw,machine
5120-01-393-1581 INTERCHANGEABLE
Handle,socket Wrench
1680-01-658-29554-494 INTERCHANGEABLE
Panel,indicator
Sun Display Systems Llc
Cross-Reference Index
Part NumberManufacturer
4494 PRIMARY Plumbersurplus.com Llc Dba Gordian Project (USA)
Related Parts
5999-00-035-9024INTERCHANGEABLE
CONTACT,ELECTRICAL
5306-00-151-1972INTERCHANGEABLE
BOLT,CLEVIS
AN23-20
6680-00-240-5674INTERCHANGEABLE
GAGE ROD,LIQUID LEVEL
13213E9523-3
5330-00-678-4619INTERCHANGEABLE
GASKET
1650-00-896-8331INTERCHANGEABLE
PIVOT,NUTATING PLAT
6730-01-145-9418INTERCHANGEABLE
PROJECTOR,STILL PICTURE
3354
5305-01-155-1817INTERCHANGEABLE
SCREW,MACHINE
5120-01-393-1581INTERCHANGEABLE
HANDLE,SOCKET WRENCH
1680-01-658-2955INTERCHANGEABLE
PANEL,INDICATOR
4-494

Frequently Asked Questions

What is NSN 4820-01-647-6825?

NSN 4820-01-647-6825 is a Valve,relief,pressure and Temper, manufactured by Plumbersurplus.com Llc Dba Gordian Project, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-647-6825?

NSN 4820-01-647-6825 has 1 cross-referenced part number: 4494 (Plumbersurplus.com Llc Dba Gordian Project).

What NSN replaces 4820-01-647-6825?

There are 9 known substitutes for 4820-01-647-6825: 5999-00-035-9024, 5306-00-151-1972, 6680-00-240-5674 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4494?

Key specifications for 4494: Special Features: SAE 1/2" MALE X 1/2" OVERSEAS METRIC 12.7MM MALE X 12.7MM FEMALE; CAGE 576K8, PLUMBERSURPLUS.COM LLC, 5871 REPUBLIC ST., RIVERSIDE CA, 951-588-0385 IS THE OEM MM; Part Name Assigned by Controlling Agency: VALVE, POP OFF 1/2 INCH IN; Temp Rating: 210.0 FAHRENHEIT DEGF; Material: COPPER ALLOY BODY. 4 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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