PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

202120Parts Kit,pressure Regulating VA

Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division · NSN 4820-01-428-1801 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-428-1801 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-428-1801. Primary manufacturer part number: 202120.
Features
  • Parts Kit,pressure Regulating VA — FSC 4820
  • Document Source: 91051
  • Nonsupply Items and Quantities: STEM PACKING 1; FLAT WASHER 1; STEM PACKING KIT 1; ADJUSTING STEM 1
  • Component Quantity: 4
  • Component Document Origin: INDUSTRIAL
  • 2 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Parts Kit,pressure Regulating VA, cataloged under National Stock Number 4820-01-428-1801, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4820-01-428-1801
Primary Part Number202120
Item NameParts Kit,pressure Regulating VA
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division
StatusACTIVE
Document Source91051
Nonsupply Items and QuantitiesSTEM PACKING 1; FLAT WASHER 1; STEM PACKING KIT 1; ADJUSTING STEM 1
Component Quantity4
Component Document OriginINDUSTRIAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5920-00-309-033886109-11 INTERCHANGEABLE
Arrester,electrical Surge
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5331-00-514-5899 INTERCHANGEABLE
O-Ring
1660-00-564-6488202120 INTERCHANGEABLE
Turbine,aircraft Cooling
Honeywell International, Inc Div Aerospace-Tucson
5905-01-033-787605BF6261 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Es Beta, Inc Dba Betatronix Div Betatronix
5935-01-645-3545202120 INTERCHANGEABLE
Connector,plug,electrical
Amphenol Corporation Dba Amphenol Connex
Cross-Reference Index
Part NumberManufacturer
202120 PRIMARY Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division (USA)
SB23-07 IT4-6 Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division (USA)
Related Parts
5920-00-309-0338INTERCHANGEABLE
ARRESTER,ELECTRICAL SURGE
86109-11
5331-00-514-5899INTERCHANGEABLE
O-RING
1660-00-564-6488INTERCHANGEABLE
TURBINE,AIRCRAFT COOLING
202120
5905-01-033-7876INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
05BF6261
5935-01-645-3545INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
202120

Frequently Asked Questions

What is NSN 4820-01-428-1801?

NSN 4820-01-428-1801 is a Parts Kit,pressure Regulating VA, manufactured by Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-428-1801?

NSN 4820-01-428-1801 has 2 cross-referenced part numbers: 202120 (Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division), SB23-07 IT4-6 (Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division).

What NSN replaces 4820-01-428-1801?

There are 5 known substitutes for 4820-01-428-1801: 5920-00-309-0338, 5331-00-514-5899, 1660-00-564-6488 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 202120?

Key specifications for 202120: Document Source: 91051; Nonsupply Items and Quantities: STEM PACKING 1; FLAT WASHER 1; STEM PACKING KIT 1; ADJUSTING STEM 1; Component Quantity: 4; Component Document Origin: INDUSTRIAL. 5 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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