PartsTable TECHNICAL DATA SHEET

NSN 4820-01-286-4626Government record, cited

Seat, Valve4820-01-286-4626

NSN 4820-01-286-4626 · NIIN 012864626 · Part number C-1166-BC-TW1 1.50IN DETAIL 5

Leslie Controls, Inc. Dba Leslie Controls Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 35795

Government record, cited

NSN 4820-01-286-4626 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-286-4626. Manufacturer of record part number: C-1166-BC-TW1 1.50IN DETAIL 5.

Also searched as 4820-01-286-4626 · 4820012864626 · NIIN 012864626 · 01-286-4626 · FSC 4820 Valves, Nonpowered · CAGE 35795 · C-1166-BC-TW1 1.50IN DETAIL 5

Nearby stock numbers ← 4820-01-286-4606 Valve, Safety Relief · 4820-01-286-4627 Seat, Valve →

4820-01-286-4626 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Flange Seat to Disk End Height: 0.151 INCHES NOMINAL IN
Flange Diameter: 2.430 INCHES NOMINAL IN
Body Outside Diameter: 2.180 INCHES NOMINAL IN
Style Designator: PLAIN FLANGED
Body Inside Diameter: 1.231 INCHES NOMINAL IN
Under Flange Height: 0.143 INCHES NOMINAL IN
Material: PLASTIC POLYTETRAFLUOROETHYLENE SEAT

Identification

NSN: 4820-01-286-4626
NIIN: 012864626
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: C-1166-BC-TW1 1.50IN DETAIL 5
Manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-286-4626, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-286-4626
Primary Part Number	C-1166-BC-TW1 1.50IN DETAIL 5
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Leslie Controls, Inc. Dba Leslie Controls Inc
Status	ACTIVE
Flange Seat to Disk End Height	0.151 INCHES NOMINAL IN
Flange Diameter	2.430 INCHES NOMINAL IN
Body Outside Diameter	2.180 INCHES NOMINAL IN
Style Designator	PLAIN FLANGED
Body Inside Diameter	1.231 INCHES NOMINAL IN
Under Flange Height	0.143 INCHES NOMINAL IN
Material	PLASTIC POLYTETRAFLUOROETHYLENE SEAT
Seat Angle in Deg	37.000 NOMINAL
Seating Surface Shape	ANGULAR

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
C-1166-BC-TW1 1.50IN DETAIL 5 PRIMARY	Leslie Controls, Inc. Dba Leslie Controls Inc (USA)

Reference documents

Reference	Meaning
C-1166-BC-TW1 1.50IN DETAIL 5	5/9 Secondary reference Circor Intl Inc

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-286-4626?

NSN 4820-01-286-4626 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-286-4626?

NSN 4820-01-286-4626 has 1 manufacturer part number on file: C-1166-BC-TW1 1.50IN DETAIL 5 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What are the specifications of C-1166-BC-TW1 1.50IN DETAIL 5?

Key specifications for C-1166-BC-TW1 1.50IN DETAIL 5: Flange Seat to Disk End Height: 0.151 INCHES NOMINAL IN; Flange Diameter: 2.430 INCHES NOMINAL IN; Body Outside Diameter: 2.180 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-286-4626 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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