PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D1866 PIECE 13 PT B1884 3IN-ASeat,valve

Hunt Valve Company, Inc. · NSN 4820-01-091-2840 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-091-2840 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-091-2840. Primary manufacturer part number: D1866 PIECE 13 PT B1884 3IN-A.
Features
  • Seat,valve — FSC 4820
  • Seating Surface Shape: FLAT
  • Style Designator: FAUCET
  • Material Document and Classification: ASTM-582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL CORROSION RESISTING OVERALL
  • 4 verified cross-references
  • Primary manufacturer: Hunt Valve Company, Inc.
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 4820-01-091-2840, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-091-2840
Primary Part NumberD1866 PIECE 13 PT B1884 3IN-A
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Seating Surface ShapeFLAT
Style DesignatorFAUCET
Material Document and ClassificationASTM-582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL CORROSION RESISTING OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5945-00-556-33207408089PT7 INTERCHANGEABLE
Relay,thermal
Lockheed Martin Corporation Div Rms
4820-01-073-5845 INTERCHANGEABLE
Seat,valve
4820-01-073-6391D-1866 PC 3 3IN B INTERCHANGEABLE
Disk,valve
Hunt Valve Company, Inc.
4820-01-090-9722B1486 INTERCHANGEABLE
Disk,valve,metallic
Hunt Valve Company, Inc.
4820-01-152-0616 INTERCHANGEABLE
Valve,check
5945-01-618-8354 INTERCHANGEABLE
Solenoid,electrical
Cross-Reference Index
Part NumberManufacturer
D1866 PIECE 13 PT B1884 3IN-A P J Valves Inc (USA)
D1866 PIECE 13 PT B1884 3IN-A PRIMARY Hunt Valve Company, Inc. (USA)
D1866 P J Valves Inc (USA)
B1884 P J Valves Inc (USA)
Related Parts
5945-00-556-3320INTERCHANGEABLE
RELAY,THERMAL
7408089PT7
4820-01-073-5845INTERCHANGEABLE
SEAT,VALVE
4820-01-073-6391INTERCHANGEABLE
DISK,VALVE
D-1866 PC 3 3IN B
4820-01-090-9722INTERCHANGEABLE
DISK,VALVE,METALLIC
B1486
4820-01-152-0616INTERCHANGEABLE
VALVE,CHECK
5945-01-618-8354INTERCHANGEABLE
SOLENOID,ELECTRICAL

Frequently Asked Questions

What is NSN 4820-01-091-2840?

NSN 4820-01-091-2840 is a Seat,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-091-2840?

NSN 4820-01-091-2840 has 4 cross-referenced part numbers: D1866 PIECE 13 PT B1884 3IN-A (P J Valves Inc), D1866 PIECE 13 PT B1884 3IN-A (Hunt Valve Company, Inc.), D1866 (P J Valves Inc), B1884 (P J Valves Inc).

What NSN replaces 4820-01-091-2840?

There are 6 known substitutes for 4820-01-091-2840: 5945-00-556-3320, 4820-01-073-5845, 4820-01-073-6391 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D1866 PIECE 13 PT B1884 3IN-A?

Key specifications for D1866 PIECE 13 PT B1884 3IN-A: Seating Surface Shape: FLAT; Style Designator: FAUCET; Material Document and Classification: ASTM-582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL CORROSION RESISTING OVERALL. 4 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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