PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

14540 PC18Seat,valve

Imi Cash Valve Inc · NSN 4820-01-049-8710 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-049-8710 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-049-8710. Primary manufacturer part number: 14540 PC18.
Features
  • Seat,valve — FSC 4820
  • Style Designator: PLAIN
  • Material: RUBBER BUNA N OVERALL
  • Seating Surface Shape: FLAT
  • Body Outside Diameter: 0.430 INCHES NOMINAL IN
  • Body Inside Diameter: 0.137 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Imi Cash Valve Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Buna N Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-049-8710, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Imi Cash Valve Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-049-8710
Primary Part Number14540 PC18
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerImi Cash Valve Inc
StatusACTIVE
Style DesignatorPLAIN
MaterialRUBBER BUNA N OVERALL
Seating Surface ShapeFLAT
Body Outside Diameter0.430 INCHES NOMINAL IN
Body Inside Diameter0.137 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6135-00-194-9352 INTERCHANGEABLE
Battery,nonrechargeable
5950-01-029-5941T235A204-1 INTERCHANGEABLE
Transformer,pulse
Telephonics Corp
6240-01-071-04848270 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
5962-01-096-4127 INTERCHANGEABLE
Microcircuit,digital
5962-01-123-16908270 INTERCHANGEABLE
Microcircuit,digital
Data Device Corp Dba Beta Transformer Technology
4820-01-189-212307445.002.128 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-278-35908270 INTERCHANGEABLE
Valve,safety Relief
Greno Industries, Inc. Dba Greno Industries Inc
4910-01-367-20418270 INTERCHANGEABLE
Jack,dolly Type,pneumatic
Niwot Corporation Dba Specialty Products Company Div Specialty Products Company
4240-01-385-7880WA-8270 INTERCHANGEABLE
Fountain,eye and Face Wash
Ghc Specialty Brands, Llc Dba Lab Safety Supply
1305-01-583-64688270 INTERCHANGEABLE
Cartridge,caliber .50
Hornady Manufacturing Company
Cross-Reference Index
Part NumberManufacturer
8270 Imi Cash Valve Inc (USA)
14540 PC18 PRIMARY Imi Cash Valve Inc (USA)
Related Parts
6135-00-194-9352INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5950-01-029-5941INTERCHANGEABLE
TRANSFORMER,PULSE
T235A204-1
6240-01-071-0484INTERCHANGEABLE
LAMP,INCANDESCENT
8270
5962-01-096-4127INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5962-01-123-1690INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
8270
4820-01-189-2123INTERCHANGEABLE
SEAT,VALVE
07445.002.128
4820-01-278-3590INTERCHANGEABLE
VALVE,SAFETY RELIEF
8270
4910-01-367-2041INTERCHANGEABLE
JACK,DOLLY TYPE,PNEUMATIC
8270
4240-01-385-7880INTERCHANGEABLE
FOUNTAIN,EYE AND FACE WASH
WA-8270
1305-01-583-6468INTERCHANGEABLE
CARTRIDGE,CALIBER .50
8270
7025-01-586-6382INTERCHANGEABLE
OPTICAL READER,DATA ENTRY
8270
6665-01-615-9309INTERCHANGEABLE
CALIBRATION CHECK KIT,GAS MONITO
8270

Frequently Asked Questions

What is NSN 4820-01-049-8710?

NSN 4820-01-049-8710 is a Seat,valve, manufactured by Imi Cash Valve Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-049-8710?

NSN 4820-01-049-8710 has 2 cross-referenced part numbers: 8270 (Imi Cash Valve Inc), 14540 PC18 (Imi Cash Valve Inc).

What NSN replaces 4820-01-049-8710?

There are 12 known substitutes for 4820-01-049-8710: 6135-00-194-9352, 5950-01-029-5941, 6240-01-071-0484 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 14540 PC18?

Key specifications for 14540 PC18: Overall Height: 0.098 INCHES NOMINAL IN; Style Designator: PLAIN; Material: RUBBER BUNA N OVERALL; Seating Surface Shape: FLAT. 6 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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