PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

330-J57-501 OPRValve,regulating,fluid Pressure

Carrier Corp · NSN 4820-01-428-6887 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-428-6887 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-428-6887. Primary manufacturer part number: 330-J57-501 OPR.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Carrier Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-428-6887, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Carrier Corp. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-428-6887
Primary Part Number330-J57-501 OPR
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCarrier Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4420-01-421-5290MHE-1211A-1P INTERCHANGEABLE
Cooler,fluid,industrial
Ketema Inc Heat Transfer Div
4820-01-431-9138 INTERCHANGEABLE
Valve,safety Relief
6685-01-432-2579 INTERCHANGEABLE
Indicator,humidity,plug
Cross-Reference Index
Part NumberManufacturer
A4A0-4-1/8Y Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division (USA)
330-J57-501 Carrier Corp (USA)
A4A0-4 Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division (USA)
330-J57-501 OPR PRIMARY Carrier Corp (USA)
Related Parts
4420-01-421-5290INTERCHANGEABLE
COOLER,FLUID,INDUSTRIAL
MHE-1211A-1P
4820-01-431-9138INTERCHANGEABLE
VALVE,SAFETY RELIEF
6685-01-432-2579INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG

Frequently Asked Questions

What is NSN 4820-01-428-6887?

NSN 4820-01-428-6887 is a Valve,regulating,fluid Pressure, manufactured by Carrier Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-428-6887?

NSN 4820-01-428-6887 has 4 cross-referenced part numbers: A4A0-4-1/8Y (Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division), 330-J57-501 (Carrier Corp), A4A0-4 (Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division), 330-J57-501 OPR (Carrier Corp).

What NSN replaces 4820-01-428-6887?

There are 3 known substitutes for 4820-01-428-6887: 4420-01-421-5290, 4820-01-431-9138, 6685-01-432-2579. Verify interchangeability with system specifications before substitution.

What are the specifications of 330-J57-501 OPR?

Key specifications for 330-J57-501 OPR: End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 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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