PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B45112Seat,valve

Davey Compressor Co Div of Keco Industries Inc · NSN 4820-01-011-8263 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-011-8263 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-011-8263. Primary manufacturer part number: B45112.
Features
  • Seat,valve — FSC 4820
  • Body Inside Diameter: 0.094 INCHES NOMINAL IN
  • Material: PLASTIC POLYAMIDE NYLON OVERALL
  • Style Designator: PLAIN FLANGED
  • Seating Surface Shape: ANGULAR
  • Under Flange Height: 0.156 INCHES NOMINAL IN
  • Body Outside Diameter: 0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
  • Flange Diameter: 0.375 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polyamide Nylon Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-011-8263, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Davey Compressor Co Div of Keco Industries Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN4820-01-011-8263
Primary Part NumberB45112
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDavey Compressor Co Div of Keco Industries Inc
StatusACTIVE
Body Inside Diameter0.094 INCHES NOMINAL IN
MaterialPLASTIC POLYAMIDE NYLON OVERALL
Style DesignatorPLAIN FLANGED
Seating Surface ShapeANGULAR
Under Flange Height0.156 INCHES NOMINAL IN
Body Outside Diameter0.253 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
Flange Diameter0.375 INCHES NOMINAL IN
Seat Angle in Deg30.000 NOMINAL
Flange Seat to Disk End Height0.094 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-034-637245112A INTERCHANGEABLE
Board Assembly
Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services
3455-00-232-903258-10119 INTERCHANGEABLE
Cutter,milling,side
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
5120-00-289-90355120-00-289-9035 INTERCHANGEABLE
Shovel,hand
General Services Administration Federal Supply Service
4820-00-322-23934511-2 INTERCHANGEABLE
Valve,seat
Avox Systems Inc Dba Avox Systems Inc
5930-00-501-485945-112 INTERCHANGEABLE
Switch,toggle
Raytheon Company Dba Raytheon Co
5331-00-599-0950 INTERCHANGEABLE
O-Ring
5955-00-789-811445112 INTERCHANGEABLE
Oscillator,noncrystal Controlled
L3harris Technologies, Inc. Div Space and Airborne Systems
4820-00-827-3266 INTERCHANGEABLE
Valve,gate
6515-01-377-3738 INTERCHANGEABLE
Razor,surgical Preparation
5120-01-431-2717 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
B45112 Davey Compressor Co Div of Keco Industries Inc (USA)
B45112 Drs Environmental Systems Inc (USA)
45112 Davey Compressor Co Div of Keco Industries Inc (USA)
Related Parts
6625-00-034-6372INTERCHANGEABLE
BOARD ASSEMBLY
45112A
3455-00-232-9032INTERCHANGEABLE
CUTTER,MILLING,SIDE
58-10119
5120-00-289-9035INTERCHANGEABLE
SHOVEL,HAND
5120-00-289-9035
4820-00-322-2393INTERCHANGEABLE
VALVE,SEAT
4511-2
5930-00-501-4859INTERCHANGEABLE
SWITCH,TOGGLE
45-112
5331-00-599-0950INTERCHANGEABLE
O-RING
5955-00-789-8114INTERCHANGEABLE
OSCILLATOR,NONCRYSTAL CONTROLLED
45112
4820-00-827-3266INTERCHANGEABLE
VALVE,GATE
6515-01-377-3738INTERCHANGEABLE
RAZOR,SURGICAL PREPARATION
5120-01-431-2717INTERCHANGEABLE
SOCKET,SOCKET WRENCH
6230-01-584-1831INTERCHANGEABLE
SEARCHLIGHT
45112
4730-01-645-3302INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
451-1/2

Frequently Asked Questions

What is NSN 4820-01-011-8263?

NSN 4820-01-011-8263 is a Seat,valve, manufactured by Davey Compressor Co Div of Keco Industries Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-011-8263?

NSN 4820-01-011-8263 has 3 cross-referenced part numbers: B45112 (Davey Compressor Co Div of Keco Industries Inc), B45112 (Drs Environmental Systems Inc), 45112 (Davey Compressor Co Div of Keco Industries Inc).

What NSN replaces 4820-01-011-8263?

There are 12 known substitutes for 4820-01-011-8263: 6625-00-034-6372, 3455-00-232-9032, 5120-00-289-9035 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B45112?

Key specifications for B45112: Body Inside Diameter: 0.094 INCHES NOMINAL IN; Material: PLASTIC POLYAMIDE NYLON OVERALL; Style Designator: PLAIN FLANGED; Seating Surface Shape: ANGULAR. 9 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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