PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14600318-1Seat,valve

Grove Valve Operations · NSN 4820-00-647-2328 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-647-2328 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-647-2328. Primary manufacturer part number: 14600318-1.
Features
  • Seat,valve — FSC 4820
  • Body Outside Diameter: 0.875 INCHES NOMINAL IN
  • Seating Surface Shape: ANGULAR
  • Material: STEEL CORROSION RESISTING OVERALL
  • Flange Seat to Disk End Height: 0.312 INCHES NOMINAL IN
  • Body Inside Diameter: 0.375 INCHES NOMINAL IN
  • Style Designator: PLAIN FLANGED
  • Seat Angle in Deg: 30.000 NOMINAL
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-647-2328, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Grove Valve Operations. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-647-2328
Primary Part Number14600318-1
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGrove Valve Operations
StatusCANCELLED
Body Outside Diameter0.875 INCHES NOMINAL IN
Seating Surface ShapeANGULAR
MaterialSTEEL CORROSION RESISTING OVERALL
Flange Seat to Disk End Height0.312 INCHES NOMINAL IN
Body Inside Diameter0.375 INCHES NOMINAL IN
Style DesignatorPLAIN FLANGED
Seat Angle in Deg30.000 NOMINAL
Flange Diameter1.062 INCHES NOMINAL IN
Under Flange Height0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5305-00-639-695923403 INTERCHANGEABLE
Screw,machine
Briggs and Stratton Corp
5998-00-964-1175234046 INTERCHANGEABLE
Circuit Card Assembly
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3455-00-971-890817614 INTERCHANGEABLE
Cutter,milling,end
New York Twist Drill Inc
5998-01-137-099423403 INTERCHANGEABLE
Circuit Card Assembly
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
4820-01-204-524511889NPC22 INTERCHANGEABLE
Seat,valve
Classic Mfg
8040-01-210-101746561 INTERCHANGEABLE
Adhesive
Loctite Corp
4720-01-268-7399 INTERCHANGEABLE
Tubing Assembly,nonmetallic
5985-01-276-27072898679-6 INTERCHANGEABLE
Coupler,directional
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4940-01-451-939134015-01 INTERCHANGEABLE
Enclosure,electromagnetic Shield
Electronic Marine Systems, Inc.
4820-01-517-3083 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
14600318-1 PRIMARY Grove Valve Operations (USA)
CD79ITEM6 Grove Valve Operations (USA)
586-206-1720895REVAITEM6 Naval Ship Systems Command (USA)
N749REVAPC23 3-8 Grove Valve Operations (USA)
23403 PRIMARY Grove Valve Operations (USA)
146-00318-1 PRIMARY Grove Valve Operations (USA)
234046 Grove Valve Operations (USA)
Related Parts
5305-00-639-6959INTERCHANGEABLE
SCREW,MACHINE
23403
5998-00-964-1175INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
234046
3455-00-971-8908INTERCHANGEABLE
CUTTER,MILLING,END
17614
5998-01-137-0994INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
23403
4820-01-204-5245INTERCHANGEABLE
SEAT,VALVE
11889NPC22
8040-01-210-1017INTERCHANGEABLE
ADHESIVE
46561
4720-01-268-7399INTERCHANGEABLE
TUBING ASSEMBLY,NONMETALLIC
5985-01-276-2707INTERCHANGEABLE
COUPLER,DIRECTIONAL
2898679-6
4940-01-451-9391INTERCHANGEABLE
ENCLOSURE,ELECTROMAGNETIC SHIELD
34015-01
4820-01-517-3083INTERCHANGEABLE
VALVE,CHECK
5340-01-699-6202INTERCHANGEABLE
COVER,ACCESS
23-403

Frequently Asked Questions

What is NSN 4820-00-647-2328?

NSN 4820-00-647-2328 is a Seat,valve, manufactured by Grove Valve Operations, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-647-2328?

NSN 4820-00-647-2328 has 7 cross-referenced part numbers: 14600318-1 (Grove Valve Operations), CD79ITEM6 (Grove Valve Operations), 586-206-1720895REVAITEM6 (Naval Ship Systems Command), N749REVAPC23 3-8 (Grove Valve Operations), 23403 (Grove Valve Operations) and 2 more.

What NSN replaces 4820-00-647-2328?

There are 11 known substitutes for 4820-00-647-2328: 5305-00-639-6959, 5998-00-964-1175, 3455-00-971-8908 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14600318-1?

Key specifications for 14600318-1: Body Outside Diameter: 0.875 INCHES NOMINAL IN; Special Features: FURNISHED W/1 INSERT,1 RETAINING CAP; Seating Surface Shape: ANGULAR; Material: STEEL CORROSION RESISTING OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-647-2328 still in active supply?

NSN 4820-00-647-2328 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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