PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20066-1Valve,suction

Ontic Engineering & Manufacturing, Inc Dba Ontic Us · NSN 4820-00-549-4735 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-549-4735 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-549-4735. Primary manufacturer part number: 20066-1.
Features
  • Valve,suction — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Ontic Engineering & Manufacturing, Inc Dba Ontic Us
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,suction, cataloged under National Stock Number 4820-00-549-4735, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. This item has 3 commercial cross-references from 3 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
NSN4820-00-549-4735
Primary Part Number20066-1
Item NameValve,suction
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerOntic Engineering & Manufacturing, Inc Dba Ontic Us
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4210-00-242-84673218-8023-5 INTERCHANGEABLE
Lock Assembly,travel
Kidde Fire Fighting, Inc. Div National Foam
5360-00-598-66251-1628 INTERCHANGEABLE
Spring,helical,extension
Terex Usa, Llc Dba Terex Equipment Services
4220-01-241-0909200-661 INTERCHANGEABLE
Connector,rebreather
Biomarine Inc
5975-01-489-5758200661 INTERCHANGEABLE
Mounting Base,electrical Equipme
Telectro-Mek Inc
1680-01-654-324120066-1 INTERCHANGEABLE
Latch-20066
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
20066-1 Donallco Inc (USA)
20066-1 PRIMARY Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)
20066-1 Hamilton Sundstrand Corporation (USA)
Related Parts
4210-00-242-8467INTERCHANGEABLE
LOCK ASSEMBLY,TRAVEL
3218-8023-5
5360-00-598-6625INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
1-1628
4220-01-241-0909INTERCHANGEABLE
CONNECTOR,REBREATHER
200-661
5975-01-489-5758INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
200661
1680-01-654-3241INTERCHANGEABLE
LATCH-20066
20066-1

Frequently Asked Questions

What is NSN 4820-00-549-4735?

NSN 4820-00-549-4735 is a Valve,suction, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-549-4735?

NSN 4820-00-549-4735 has 3 cross-referenced part numbers: 20066-1 (Donallco Inc), 20066-1 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us), 20066-1 (Hamilton Sundstrand Corporation).

What NSN replaces 4820-00-549-4735?

There are 5 known substitutes for 4820-00-549-4735: 4210-00-242-8467, 5360-00-598-6625, 4220-01-241-0909 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20066-1?

Key specifications for 20066-1: End Item Identification: USED ON SUCTION BOOST PUMP. 1 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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