PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1819Seat,valve

Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor · NSN 4820-00-360-4066 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-360-4066 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-360-4066. Primary manufacturer part number: 1819.
Features
  • Seat,valve — FSC 4820
  • Seating Surface Shape: FLAT
  • Style Designator: PLAIN FLANGED
  • Material: STEEL OVERALL
  • Body Outside Diameter: 1.990 INCHES NOMINAL IN
  • Flange Seat to Disk End Height: 0.296 INCHES NOMINAL IN
  • Under Flange Height: 0.265 INCHES NOMINAL IN
  • Flange Diameter: 2.240 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-360-4066, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN4820-00-360-4066
Primary Part Number1819
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerQuincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
StatusACTIVE
Seating Surface ShapeFLAT
Style DesignatorPLAIN FLANGED
MaterialSTEEL OVERALL
Body Outside Diameter1.990 INCHES NOMINAL IN
Flange Seat to Disk End Height0.296 INCHES NOMINAL IN
Under Flange Height0.265 INCHES NOMINAL IN
Flange Diameter2.240 INCHES NOMINAL IN
Body Inside Diameter0.266 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-1750005-101-0012 INTERCHANGEABLE
Disk,valve
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
6240-00-155-8707 INTERCHANGEABLE
Lamp,incandescent
5905-00-158-4615L50J2K5 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5360-00-536-7305116341819356 INTERCHANGEABLE
Spring,helical,compression
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5120-00-610-1888 INTERCHANGEABLE
Extractor Set,screw
5340-00-766-9057TA1718SS03T INTERCHANGEABLE
Clamp,loop
Ta Aerospace Co Div Ta Aerospace
5330-00-835-5091 INTERCHANGEABLE
Gasket
5905-00-855-3715 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5331-00-906-1616 INTERCHANGEABLE
O-Ring
4820-01-030-16571838-015-01 INTERCHANGEABLE
Valve,bleeder,hydraulic System
Mission Systems Orchard Park Inc
Cross-Reference Index
Part NumberManufacturer
4SC1014 Striegel Supply, Inc. Dba Striegel Supply Inc (USA)
1819 PRIMARY Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA)
Related Parts
4820-00-036-1750INTERCHANGEABLE
DISK,VALVE
005-101-0012
6240-00-155-8707INTERCHANGEABLE
LAMP,INCANDESCENT
5905-00-158-4615INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
L50J2K5
5360-00-536-7305INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
116341819356
5120-00-610-1888INTERCHANGEABLE
EXTRACTOR SET,SCREW
5340-00-766-9057INTERCHANGEABLE
CLAMP,LOOP
TA1718SS03T
5330-00-835-5091INTERCHANGEABLE
GASKET
5905-00-855-3715INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5331-00-906-1616INTERCHANGEABLE
O-RING
4820-01-030-1657INTERCHANGEABLE
VALVE,BLEEDER,HYDRAULIC SYSTEM
1838-015-01
4220-01-185-1615INTERCHANGEABLE
LENS,DIVER'S MASK
520-004
5340-01-218-4373INTERCHANGEABLE
STANDOFF,THREADED,SPACING
411750

Frequently Asked Questions

What is NSN 4820-00-360-4066?

NSN 4820-00-360-4066 is a Seat,valve, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-360-4066?

NSN 4820-00-360-4066 has 2 cross-referenced part numbers: 4SC1014 (Striegel Supply, Inc. Dba Striegel Supply Inc), 1819 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).

What NSN replaces 4820-00-360-4066?

There are 12 known substitutes for 4820-00-360-4066: 4820-00-036-1750, 6240-00-155-8707, 5905-00-158-4615 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1819?

Key specifications for 1819: Seating Surface Shape: FLAT; Style Designator: PLAIN FLANGED; Material: STEEL OVERALL; Body Outside Diameter: 1.990 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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