PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1975 REF 4Retainer,disk,valve

Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse · NSN 4820-01-154-8112 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-154-8112 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-154-8112. Primary manufacturer part number: 1975 REF 4.
Features
  • Retainer,disk,valve — FSC 4820
  • Material: STEEL
  • Material Document and Classification: ASTM A479, TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE
  • 3 verified cross-references
  • Primary manufacturer: Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Retainer,disk,valve, cataloged under National Stock Number 4820-01-154-8112, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-154-8112
Primary Part Number1975 REF 4
Item NameRetainer,disk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse
StatusACTIVE
MaterialSTEEL
Material Document and ClassificationASTM A479, TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5910-00-051-38252329B0101 INTERCHANGEABLE
Capacitor,variable,glass Dielect
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5325-00-276-4993201-1060-000 INTERCHANGEABLE
Grommet,nonmetallic
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6240-00-313-2308 INTERCHANGEABLE
Lamp,incandescent
5950-00-411-51511975 INTERCHANGEABLE
Coil,radio Frequency
Drs Signal Solutions, Inc.
4820-00-422-18211975-800 INTERCHANGEABLE
Valve,angle
Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc
5340-00-447-6025 INTERCHANGEABLE
Lock,rim
4820-00-540-1463 INTERCHANGEABLE
Valve,angle
1730-00-544-56441975-010 INTERCHANGEABLE
Jack,aircraft Landing Gear
Columbus Jack Corporation Div Columbus Jack
6625-00-800-73991975 INTERCHANGEABLE
Test Set,transponder Set
Bae Systems Information and Electronic Systems Integration Inc.
3110-00-808-29931975 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
Cross-Reference Index
Part NumberManufacturer
1975 REF 4 Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse (USA)
0733402 Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse (USA)
1975 Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse (USA)
Related Parts
5910-00-051-3825INTERCHANGEABLE
CAPACITOR,VARIABLE,GLASS DIELECT
2329B0101
5325-00-276-4993INTERCHANGEABLE
GROMMET,NONMETALLIC
201-1060-000
6240-00-313-2308INTERCHANGEABLE
LAMP,INCANDESCENT
5950-00-411-5151INTERCHANGEABLE
COIL,RADIO FREQUENCY
1975
4820-00-422-1821INTERCHANGEABLE
VALVE,ANGLE
1975-800
5340-00-447-6025INTERCHANGEABLE
LOCK,RIM
4820-00-540-1463INTERCHANGEABLE
VALVE,ANGLE
1730-00-544-5644INTERCHANGEABLE
JACK,AIRCRAFT LANDING GEAR
1975-010
6625-00-800-7399INTERCHANGEABLE
TEST SET,TRANSPONDER SET
1975
3110-00-808-2993INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
1975
5130-01-191-5899INTERCHANGEABLE
DRILL-DRIVER,ELECTRIC,PORTABLE
DCD710S2
5945-01-244-9636INTERCHANGEABLE
SOLENOID,COFFEE MAKER
1975

Frequently Asked Questions

What is NSN 4820-01-154-8112?

NSN 4820-01-154-8112 is a Retainer,disk,valve, manufactured by Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-154-8112?

NSN 4820-01-154-8112 has 3 cross-referenced part numbers: 1975 REF 4 (Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse), 0733402 (Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse), 1975 (Dresser, Inc. Dba Dresser Equipment Group Div Industrial Valve Operations, Dresse).

What NSN replaces 4820-01-154-8112?

There are 12 known substitutes for 4820-01-154-8112: 5910-00-051-3825, 5325-00-276-4993, 6240-00-313-2308 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1975 REF 4?

Key specifications for 1975 REF 4: Material: STEEL; Material Document and Classification: ASTM A479, TYPE 304 ASSN STD SINGLE MATERIAL RESPONSE. 2 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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