PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1 1/4 CXT PT NO 122001-125Valve,regulating,temperature

Aerco International, Inc. Dba Aerco International Inc · NSN 4820-01-156-7166 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-156-7166 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-156-7166. Primary manufacturer part number: 1 1/4 CXT PT NO 122001-125.
Features
  • Valve,regulating,temperature — FSC 4820
  • 6 verified cross-references
  • Primary manufacturer: Aerco International, Inc. Dba Aerco International Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-156-7166, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aerco International, Inc. Dba Aerco International Inc. This item has 6 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,regulating,temperature
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersAerco International, Inc. Dba Aerco International Inc (CAGE 95368)
Technical Specifications
ParameterValue
NSN4820-01-156-7166
Primary Part Number1 1/4 CXT PT NO 122001-125
Item NameValve,regulating,temperature
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAerco International, Inc. Dba Aerco International Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4420-01-134-3434SW1B05-110421 INTERCHANGEABLE
Heater,fluid,industrial
Aerco International, Inc. Dba Aerco International Inc
4820-01-157-9624121616-1.25 INTERCHANGEABLE
Pilot Assembly Kit,inner
Aerco International, Inc. Dba Aerco International Inc
4820-01-178-8873121615 INTERCHANGEABLE
Parts Kit,pilot Control Valve
Aerco International, Inc. Dba Aerco International Inc
Cross-Reference Index
Part NumberManufacturer
AP-C-411-CXT PT NO 122001-125 Aerco International, Inc. Dba Aerco International Inc (USA)
1 1/4 CXT PT NO 122001-125 PRIMARY Aerco International, Inc. Dba Aerco International Inc (USA)
PL-D-060 Aerco International, Inc. Dba Aerco International Inc (USA)
122001-1.25 Aerco International, Inc. Dba Aerco International Inc (USA)
SD-A-015-49 Aerco International, Inc. Dba Aerco International Inc (USA)
AP-C-411 Aerco International, Inc. Dba Aerco International Inc (USA)
Related Parts
4420-01-134-3434INTERCHANGEABLE
HEATER,FLUID,INDUSTRIAL
SW1B05-110421
4820-01-157-9624INTERCHANGEABLE
PILOT ASSEMBLY KIT,INNER
121616-1.25
4820-01-178-8873INTERCHANGEABLE
PARTS KIT,PILOT CONTROL VALVE
121615

Frequently Asked Questions

What is NSN 4820-01-156-7166?

NSN 4820-01-156-7166 is a Valve,regulating,temperature, manufactured by Aerco International, Inc. Dba Aerco International Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-156-7166?

NSN 4820-01-156-7166 has 6 cross-referenced part numbers: AP-C-411-CXT PT NO 122001-125 (Aerco International, Inc. Dba Aerco International Inc), 1 1/4 CXT PT NO 122001-125 (Aerco International, Inc. Dba Aerco International Inc), PL-D-060 (Aerco International, Inc. Dba Aerco International Inc), 122001-1.25 (Aerco International, Inc. Dba Aerco International Inc), SD-A-015-49 (Aerco International, Inc. Dba Aerco International Inc) and 1 more.

What NSN replaces 4820-01-156-7166?

There are 3 known substitutes for 4820-01-156-7166: 4420-01-134-3434, 4820-01-157-9624, 4820-01-178-8873. Verify interchangeability with system specifications before substitution.

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