PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4505-1-DCSeat,valve

Hydrasearch Company, Llc · NSN 4820-01-099-3727 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-099-3727 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-099-3727. Primary manufacturer part number: 4505-1-DC.
Features
  • Seat,valve — FSC 4820
  • Material: NICKEL ALLOY SEAT
  • 6 verified cross-references
  • Primary manufacturer: Hydrasearch Company, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Seat construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-099-3727, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydrasearch Company, Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-099-3727
Primary Part Number4505-1-DC
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHydrasearch Company, Llc
StatusACTIVE
MaterialNICKEL ALLOY SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-842-8250CA3960 INTERCHANGEABLE
Gasket
Stillman Seal Corporation Div Stillman Seal Corperation
4820-01-022-1369570-3PL3737 INTERCHANGEABLE
Valve,stop-Check
Admiral Valve Llc Dba Cpv Manufacturing
4820-01-106-3002 INTERCHANGEABLE
Seat,valve
5315-01-127-16480450-51 INTERCHANGEABLE
Pin,straight,headless
Honeywell International Inc. Dba Honeywell International
5342-01-265-0457ZP20164-2 INTERCHANGEABLE
Handle
Star Cases Llc Dba Zero Manufacturing
Cross-Reference Index
Part NumberManufacturer
C-4581 Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging (USA)
4505-1-DC PRIMARY Hydrasearch Company, Llc (USA)
045051DB Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging (USA)
045051 Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging (USA)
PL-1037 PART 045051 Hydrasearch Company, Llc (USA)
C-4581 PL-1037 PART 045051 Hydrasearch Company, Llc (USA)
Related Parts
5330-00-842-8250INTERCHANGEABLE
GASKET
CA3960
4820-01-022-1369INTERCHANGEABLE
VALVE,STOP-CHECK
570-3PL3737
4820-01-106-3002INTERCHANGEABLE
SEAT,VALVE
5315-01-127-1648INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
0450-51
5342-01-265-0457INTERCHANGEABLE
HANDLE
ZP20164-2

Frequently Asked Questions

What is NSN 4820-01-099-3727?

NSN 4820-01-099-3727 is a Seat,valve, manufactured by Hydrasearch Company, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-099-3727?

NSN 4820-01-099-3727 has 6 cross-referenced part numbers: C-4581 (Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging), 4505-1-DC (Hydrasearch Company, Llc), 045051DB (Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging), 045051 (Hydrasearch Co., Inc. Dba Use CAGE Code 32142 for Cataloging), PL-1037 PART 045051 (Hydrasearch Company, Llc) and 1 more.

What NSN replaces 4820-01-099-3727?

There are 5 known substitutes for 4820-01-099-3727: 5330-00-842-8250, 4820-01-022-1369, 4820-01-106-3002 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4505-1-DC?

Key specifications for 4505-1-DC: Material: NICKEL ALLOY SEAT. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com