PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12554Valve,expansion

Itw Gse Inc. · NSN 4820-01-498-8657 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-498-8657 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-498-8657. Primary manufacturer part number: 12554.
Features
  • Valve,expansion — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Itw Gse Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,expansion, cataloged under National Stock Number 4820-01-498-8657, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Itw Gse Inc.. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-498-8657
Primary Part Number12554
Item NameValve,expansion
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerItw Gse Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
2915-00-097-021112554 INTERCHANGEABLE
Pin,outer Bearing,regulator
Triumph Engine Control Systems Llc
3110-00-151-506912554 INTERCHANGEABLE
Bearing,roller,cylindrical
Industrial Tectonics Bearings Corporation Dba Rbc Bearings Inc Div Industrial Tectonics Bearings
4935-00-224-0346 INTERCHANGEABLE
Body,pump Assy
4320-00-410-902212554-0000 INTERCHANGEABLE
Pumping Unit,clear Water
Itt Jabsco Products
3110-00-548-66231-5872 INTERCHANGEABLE
Bearing,roller,cylindrical
American Hofmann Corp
5340-01-118-486011618 INTERCHANGEABLE
Damper,shimmy
Westerbeke Corporation
5985-01-315-4419 INTERCHANGEABLE
Support,antenna
3010-01-374-758312554 INTERCHANGEABLE
Carrier,gear Assembly
DP Manufacturing Inc.
5340-01-579-308912554-01 INTERCHANGEABLE
Clamp,block
Bae Systems Information & Electronic Systems Integration Inc.
5340-01-579-866312554-02 INTERCHANGEABLE
Clamp,block
Bae Systems Information & Electronic Systems Integration Inc.
Cross-Reference Index
Part NumberManufacturer
12554 Itw Gse Inc. (USA)
OJE-6-CP60 Parker-Hannifin Corp Div Sporlan Division (USA)
12554 Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems (USA)
Related Parts
2915-00-097-0211INTERCHANGEABLE
PIN,OUTER BEARING,REGULATOR
12554
3110-00-151-5069INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
12554
4935-00-224-0346INTERCHANGEABLE
BODY,PUMP ASSY
4320-00-410-9022INTERCHANGEABLE
PUMPING UNIT,CLEAR WATER
12554-0000
3110-00-548-6623INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
1-5872
5340-01-118-4860INTERCHANGEABLE
DAMPER,SHIMMY
11618
5985-01-315-4419INTERCHANGEABLE
SUPPORT,ANTENNA
3010-01-374-7583INTERCHANGEABLE
CARRIER,GEAR ASSEMBLY
12554
5340-01-579-3089INTERCHANGEABLE
CLAMP,BLOCK
12554-01
5340-01-579-8663INTERCHANGEABLE
CLAMP,BLOCK
12554-02
4520-01-734-3677INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
12554

Frequently Asked Questions

What is NSN 4820-01-498-8657?

NSN 4820-01-498-8657 is a Valve,expansion, manufactured by Itw Gse Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-498-8657?

NSN 4820-01-498-8657 has 3 cross-referenced part numbers: 12554 (Itw Gse Inc.), OJE-6-CP60 (Parker-Hannifin Corp Div Sporlan Division), 12554 (Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems).

What NSN replaces 4820-01-498-8657?

There are 11 known substitutes for 4820-01-498-8657: 2915-00-097-0211, 3110-00-151-5069, 4935-00-224-0346 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12554?

Key specifications for 12554: End Item Identification: F-22 ACFT. 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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