PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40734-9 PC NO 11Piston,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-483-9716 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-483-9716 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-483-9716. Primary manufacturer part number: 40734-9 PC NO 11.
Features
  • Piston,valve — FSC 4820
  • Valve Type for Which Designed: PRESSURE REDUCING
  • Features Provided: SPRING LOADED
  • Valve Design Control Activity: 55378
  • Valve Size for Which Designed: 1.500 INCHES IN
  • Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
  • Valve Model Number for Which Designed: RA
  • Material: STEEL CORROSION RESISTING
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-483-9716, 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 7 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-483-9716
Primary Part Number40734-9 PC NO 11
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Valve Type for Which DesignedPRESSURE REDUCING
Features ProvidedSPRING LOADED
Valve Design Control Activity55378
Valve Size for Which Designed1.500 INCHES IN
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
Valve Model Number for Which DesignedRA
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3020-00-517-2358167700 INTERCHANGEABLE
Gear,worm
Lockheed Martin Corporation Div Rms - Mitchel Field
7025-01-467-4401 INTERCHANGEABLE
Disk Drive Unit
4820-01-483-949840734-9 ASSY 40734-901 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
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
4820-01-483-971740734-9 PC NO 35 INTERCHANGEABLE
Retainer,disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Cross-Reference Index
Part NumberManufacturer
40734-9 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
40734-9 PC NO 11 PRIMARY Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
1677-00 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
3020-00-517-2358INTERCHANGEABLE
GEAR,WORM
167700
7025-01-467-4401INTERCHANGEABLE
DISK DRIVE UNIT
4820-01-483-9498INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40734-9 ASSY 40734-901
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
4820-01-483-9717INTERCHANGEABLE
RETAINER,DISK,VALVE
40734-9 PC NO 35
4820-01-484-0039INTERCHANGEABLE
SEAT,VALVE
40734-9 PC NO 7

Frequently Asked Questions

What is NSN 4820-01-483-9716?

NSN 4820-01-483-9716 is a Piston,valve, 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 4820-01-483-9716?

NSN 4820-01-483-9716 has 3 cross-referenced part numbers: 40734-9 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 40734-9 PC NO 11 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 1677-00 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-483-9716?

There are 11 known substitutes for 4820-01-483-9716: 3020-00-517-2358, 7025-01-467-4401, 4820-01-483-9498 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40734-9 PC NO 11?

Key specifications for 40734-9 PC NO 11: Valve Type for Which Designed: PRESSURE REDUCING; Features Provided: SPRING LOADED; Valve Design Control Activity: 55378; Valve Size for Which Designed: 1.500 INCHES IN. 10 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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