PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40734-9 ASSY 40734-901Valve,regulating,fluid Pressure

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-483-9498 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-483-9498 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-483-9498. Primary manufacturer part number: 40734-9 ASSY 40734-901.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Valve Loading Method: SPRING
  • Maximum Inlet Pressure Rating: ERR-060
  • Outlet Pressure Accuracy Rating: ERR-060
  • Flow Control Device: DIAPHRAGM
  • Temp Rating: 300.0 FAHRENHEIT NOMINAL DEGF
  • Remote Actuation Method: DIAPHRAGM
  • Material: COPPER ALLOY FLOW CONTROL DEVICE
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Flow Control Device construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-483-9498, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 8 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-483-9498
Primary Part Number40734-9 ASSY 40734-901
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Valve Loading MethodSPRING
Maximum Inlet Pressure RatingERR-060
Outlet Pressure Accuracy RatingERR-060
Flow Control DeviceDIAPHRAGM
Temp Rating300.0 FAHRENHEIT NOMINAL DEGF
Remote Actuation MethodDIAPHRAGM
MaterialCOPPER ALLOY FLOW CONTROL DEVICE
MaterialSTEEL CORROSION RESISTING SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4820-01-483-961640734-9 PC NO 12 INTERCHANGEABLE
Cylinder,piston
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-483-962940734-9 PC NO 19 INTERCHANGEABLE
Diaphragm,valve,flat
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-483-964340734-9 PC NO 33 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-483-964740734-9 PC NO 34 INTERCHANGEABLE
Disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
3040-01-483-965340734-9 PC NO 36 INTERCHANGEABLE
Shaft,shouldered
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-483-971440734-9 PC NO 2 INTERCHANGEABLE
Stem,fluid Valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-483-971640734-9 PC NO 11 INTERCHANGEABLE
Piston,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-483-971740734-9 PC NO 35 INTERCHANGEABLE
Retainer,disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-484-003940734-9 PC NO 7 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5895-01-708-7779407349-01 INTERCHANGEABLE
Satellite Communication Subsyste
Datapath, Inc. Dba Datapath Inc
Cross-Reference Index
Part NumberManufacturer
40734-9 ASSY 40734-901 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40734-9 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40734-901 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
4820-01-483-9616INTERCHANGEABLE
CYLINDER,PISTON
40734-9 PC NO 12
4820-01-483-9629INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
40734-9 PC NO 19
4820-01-483-9643INTERCHANGEABLE
SEAT,VALVE
40734-9 PC NO 33
4820-01-483-9647INTERCHANGEABLE
DISK,VALVE
40734-9 PC NO 34
3040-01-483-9653INTERCHANGEABLE
SHAFT,SHOULDERED
40734-9 PC NO 36
4820-01-483-9714INTERCHANGEABLE
STEM,FLUID VALVE
40734-9 PC NO 2
4820-01-483-9716INTERCHANGEABLE
PISTON,VALVE
40734-9 PC NO 11
4820-01-483-9717INTERCHANGEABLE
RETAINER,DISK,VALVE
40734-9 PC NO 35
4820-01-484-0039INTERCHANGEABLE
SEAT,VALVE
40734-9 PC NO 7
5895-01-708-7779INTERCHANGEABLE
SATELLITE COMMUNICATION SUBSYSTE
407349-01

Frequently Asked Questions

What is NSN 4820-01-483-9498?

NSN 4820-01-483-9498 is a Valve,regulating,fluid Pressure, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-483-9498?

NSN 4820-01-483-9498 has 3 cross-referenced part numbers: 40734-9 ASSY 40734-901 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40734-9 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40734-901 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-483-9498?

There are 10 known substitutes for 4820-01-483-9498: 4820-01-483-9616, 4820-01-483-9629, 4820-01-483-9643 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40734-9 ASSY 40734-901?

Key specifications for 40734-9 ASSY 40734-901: Valve Loading Method: SPRING; Maximum Inlet Pressure Rating: ERR-060; End Item Identification: E/I 1 1/2 INCH TRAC STYLE RA, PILOT OPERATED REDUCING VALUE; W/S TARAWA CLASS LHA IN; Outlet Pressure Accuracy Rating: ERR-060. 9 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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