PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

309NGuard,valve

Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions · NSN 4820-00-146-1015 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-146-1015 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-146-1015. Primary manufacturer part number: 309N.
Features
  • Guard,valve — FSC 4820
  • General Characteristics Item Description: BRASS MATERIAL; 4.960 IN. O/A LG; 0.770 IN. O/A WIDTH; 1.250 IN. O/A HEIGHT; W/TWO HOLES 0.125 IN. DIA AND TWO HOLES 0.375 IN. DIA; 4.125 IN. C TO C OF THE LARGER HOLES IN
  • 27 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Guard,valve, cataloged under National Stock Number 4820-00-146-1015, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 27 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-146-1015
Primary Part Number309N
Item NameGuard,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
StatusACTIVE
General Characteristics Item DescriptionBRASS MATERIAL; 4.960 IN. O/A LG; 0.770 IN. O/A WIDTH; 1.250 IN. O/A HEIGHT; W/TWO HOLES 0.125 IN. DIA AND TWO HOLES 0.375 IN. DIA; 4.125 IN. C TO C OF THE LARGER HOLES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2930-00-608-8552837B INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
5342-01-205-4380309N INTERCHANGEABLE
Anode,corrosion Preventive
Curtiss-Wright Electro-Mechanical Corporation Div Epd
Cross-Reference Index
Part NumberManufacturer
HL3534PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
HL5726PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
HL3531BC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
HL1859PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
107305PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
309N PRIMARY Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
87765PC43-44 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
87765-1PC43-44 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
HL1854PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
HL5194PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
87757-1PC43-44 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
HL5731PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
87760PC43-44 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
107302PC43-44 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
PC43 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
87760-1CP43-44 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
107310PC43-44 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
HL5726PC43-44 Siemens Energy, Inc. Dba Dresser-Rand (USA)
PC43 Siemens Energy, Inc. Dba Dresser-Rand (USA)
107302PC43-44 Siemens Energy, Inc. Dba Dresser-Rand (USA)
Related Parts
2930-00-608-8552INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
837B
5342-01-205-4380INTERCHANGEABLE
ANODE,CORROSION PREVENTIVE
309N

Frequently Asked Questions

What is NSN 4820-00-146-1015?

NSN 4820-00-146-1015 is a Guard,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-146-1015?

NSN 4820-00-146-1015 has 27 cross-referenced part numbers: HL3534PC43-44 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), HL5726PC43-44 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), HL3531BC43-44 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), HL1859PC43-44 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), 107305PC43-44 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture) and 22 more.

What NSN replaces 4820-00-146-1015?

There are 2 known substitutes for 4820-00-146-1015: 2930-00-608-8552, 5342-01-205-4380. Verify interchangeability with system specifications before substitution.

What are the specifications of 309N?

Key specifications for 309N: General Characteristics Item Description: BRASS MATERIAL; 4.960 IN. O/A LG; 0.770 IN. O/A WIDTH; 1.250 IN. O/A HEIGHT; W/TWO HOLES 0.125 IN. DIA AND TWO HOLES 0.375 IN. DIA; 4.125 IN. C TO C OF THE LARGER HOLES IN. 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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