PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

420120Valve,safety Relief

Trelleborg Marine Systems North America, Inc. · NSN 4820-01-724-6842 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-724-6842 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-724-6842. Primary manufacturer part number: 420120.
Features
  • Valve,safety Relief — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Trelleborg Marine Systems North America, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-724-6842, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trelleborg Marine Systems North America, Inc.. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameValve,safety Relief
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersTrelleborg Marine Systems North America, Inc. (CAGE 3ER30)
Technical Specifications
ParameterValue
NSN4820-01-724-6842
Primary Part Number420120
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrelleborg Marine Systems North America, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3439-01-708-0312420120 INTERCHANGEABLE
Electrode,welding
Reconrobotics, Inc
2040-01-724-6157420000 INTERCHANGEABLE
Fender,marine
Trelleborg Marine Systems North America, Inc.
5331-01-724-7513420119 INTERCHANGEABLE
O-Ring
Trelleborg Marine Systems North America, Inc.
4820-01-724-7537420111 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trelleborg Marine Systems North America, Inc.
5340-01-724-7580420110 INTERCHANGEABLE
Lever,manual Control
Trelleborg Marine Systems North America, Inc.
4820-01-724-7586420114 INTERCHANGEABLE
Valve,ball
Trelleborg Marine Systems North America, Inc.
4820-01-724-7810420113 INTERCHANGEABLE
Valve,ball
Trelleborg Marine Systems North America, Inc.
4820-01-724-7811420017 INTERCHANGEABLE
Valve,ball
Trelleborg Marine Systems North America, Inc.
5330-01-727-7636420112 INTERCHANGEABLE
Gasket
Trelleborg Marine Systems North America, Inc.
Cross-Reference Index
Part NumberManufacturer
420120 PRIMARY Trelleborg Marine Systems North America, Inc. (USA)
HPNE4590-1M01 Trelleborg Marine Systems North America, Inc. (USA)
HPNE4590-1M01-1.20 Trelleborg Marine Systems North America, Inc. (USA)
Related Parts
3439-01-708-0312INTERCHANGEABLE
ELECTRODE,WELDING
420120
2040-01-724-6157INTERCHANGEABLE
FENDER,MARINE
420000
5331-01-724-7513INTERCHANGEABLE
O-RING
420119
4820-01-724-7537INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
420111
5340-01-724-7580INTERCHANGEABLE
LEVER,MANUAL CONTROL
420110
4820-01-724-7586INTERCHANGEABLE
VALVE,BALL
420114
4820-01-724-7810INTERCHANGEABLE
VALVE,BALL
420113
4820-01-724-7811INTERCHANGEABLE
VALVE,BALL
420017
5330-01-727-7636INTERCHANGEABLE
GASKET
420112

Frequently Asked Questions

What is NSN 4820-01-724-6842?

NSN 4820-01-724-6842 is a Valve,safety Relief, manufactured by Trelleborg Marine Systems North America, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-724-6842?

NSN 4820-01-724-6842 has 3 cross-referenced part numbers: 420120 (Trelleborg Marine Systems North America, Inc.), HPNE4590-1M01 (Trelleborg Marine Systems North America, Inc.), HPNE4590-1M01-1.20 (Trelleborg Marine Systems North America, Inc.).

What NSN replaces 4820-01-724-6842?

There are 9 known substitutes for 4820-01-724-6842: 3439-01-708-0312, 2040-01-724-6157, 5331-01-724-7513 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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