PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19051Seat,valve

Pneudraulics, Inc. · NSN 4820-00-493-3149 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-493-3149 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-493-3149. Primary manufacturer part number: 19051.
Features
  • Seat,valve — FSC 4820
  • Style Designator: PLAIN FLANGED
  • Seating Surface Shape: FLAT
  • Material: STEEL CORROSION RESISTING OVERALL
  • Body Inside Diameter: 0.140 INCHES NOMINAL IN
  • Flange Seat to Disk End Height: 0.065 INCHES NOMINAL IN
  • Flange Diameter: 0.310 INCHES NOMINAL IN
  • Body Outside Diameter: 0.257 INCHES NOMINAL IN
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 4820-00-493-3149, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Pneudraulics, Inc.. Government technical data includes 8 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
NSN4820-00-493-3149
Primary Part Number19051
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerPneudraulics, Inc.
StatusACTIVE
Style DesignatorPLAIN FLANGED
Seating Surface ShapeFLAT
MaterialSTEEL CORROSION RESISTING OVERALL
Body Inside Diameter0.140 INCHES NOMINAL IN
Flange Seat to Disk End Height0.065 INCHES NOMINAL IN
Flange Diameter0.310 INCHES NOMINAL IN
Body Outside Diameter0.257 INCHES NOMINAL IN
Under Flange Height0.380 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-00-547-842119051 INTERCHANGEABLE
Transformer,power,s
Simmonds Precision Products Inc
5935-00-871-50521905-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
1620-01-012-198519051-1 INTERCHANGEABLE
Towing Eye,aircraft
Northrop Grumman Systems Corporation
5340-01-044-3387190-51 INTERCHANGEABLE
Handle,bow
Lta/d-Cemco Inc Dba D-Cemco
1680-01-164-9467 INTERCHANGEABLE
Coupling,control,pr
4910-01-246-309719368 INTERCHANGEABLE
Tester
Briggs and Stratton Corp
5985-01-497-77111905-1 INTERCHANGEABLE
Radome
Cpi Essco Inc
5940-01-572-748019051 INTERCHANGEABLE
Terminal Box
Parker Hannifin Corporation Div Village Marine Tech
6110-01-575-824320-0077 INTERCHANGEABLE
Contactor,magnetic
Parker Hannifin Corporation Div Village Marine Tech
Cross-Reference Index
Part NumberManufacturer
19051 PRIMARY Pneudraulics, Inc. (USA)
Related Parts
5950-00-547-8421INTERCHANGEABLE
TRANSFORMER,POWER,S
19051
5935-00-871-5052INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1905-1
1620-01-012-1985INTERCHANGEABLE
TOWING EYE,AIRCRAFT
19051-1
5340-01-044-3387INTERCHANGEABLE
HANDLE,BOW
190-51
1680-01-164-9467INTERCHANGEABLE
COUPLING,CONTROL,PR
4910-01-246-3097INTERCHANGEABLE
TESTER
19368
5985-01-497-7711INTERCHANGEABLE
RADOME
1905-1
5940-01-572-7480INTERCHANGEABLE
TERMINAL BOX
19051
6110-01-575-8243INTERCHANGEABLE
CONTACTOR,MAGNETIC
20-0077

Frequently Asked Questions

What is NSN 4820-00-493-3149?

NSN 4820-00-493-3149 is a Seat,valve, manufactured by Pneudraulics, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-493-3149?

NSN 4820-00-493-3149 has 1 cross-referenced part number: 19051 (Pneudraulics, Inc.).

What NSN replaces 4820-00-493-3149?

There are 9 known substitutes for 4820-00-493-3149: 5950-00-547-8421, 5935-00-871-5052, 1620-01-012-1985 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19051?

Key specifications for 19051: Style Designator: PLAIN FLANGED; Seating Surface Shape: FLAT; Material: STEEL CORROSION RESISTING OVERALL; Body Inside Diameter: 0.140 INCHES NOMINAL IN. 8 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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