PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D49911 2INValve,regulating,fluid Pressure

Hunt Valve Company Inc Dba Union Flonetics · NSN 4820-01-111-0783 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-111-0783 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-111-0783. Primary manufacturer part number: D49911 2IN.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Material: COPPER ALLOY 836 BODY
  • Material Document and Classification: UNABLE TO DECODE
  • Nondefinitive Spec/std Data: A CLASS AND 2.000IN. SIZE AND 3 TYPE IN
  • Second End Relationship with First End: IDENTICAL
  • Valve Loading Method: SPRING
  • First End Nominal Pipe Size Accommodated: 2.000 INCHES IN
  • Flow Control Device: DISK
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy 836 Body construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-111-0783, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company Inc Dba Union Flonetics. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN4820-01-111-0783
Primary Part NumberD49911 2IN
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company Inc Dba Union Flonetics
StatusACTIVE
MaterialCOPPER ALLOY 836 BODY
Material Document and ClassificationUNABLE TO DECODE
Nondefinitive Spec/std DataA CLASS AND 2.000IN. SIZE AND 3 TYPE IN
Second End Relationship with First EndIDENTICAL
Valve Loading MethodSPRING
First End Nominal Pipe Size Accommodated2.000 INCHES IN
Flow Control DeviceDISK
First End Style DesignatorSOCKET W/BRAZING RING
End Connection Quantity2
Body StyleSTRAIGHT THRU
Regulation TypeAUTOMATIC SINGLE STAGE
FilterNOT INCLUDED
Remote Actuation MethodDIAPHRAGM
First End Connection TypeUNTHREADED INTERNAL PIPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4820-00-096-8563 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-455-8505P1400-1.5 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
4820-00-455-8577 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-114-5894 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-145-6473 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-145-6474 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-238-0202 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-340-228640490-9 PART 40490-903 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4820-01-436-9365 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-01-537-9814Y402954001 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
D49911 2IN Hunt Valve Company Inc Dba Union Flonetics (USA)
D49911 2IN Hunt Valve Company, Inc. (USA)
MIL-V-24384 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4820-00-096-8563INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-455-8505INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
P1400-1.5
4820-00-455-8577INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-114-5894INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-145-6473INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-145-6474INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-238-0202INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-340-2286INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
40490-9 PART 40490-903
4820-01-436-9365INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-01-537-9814INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y402954001
4820-01-561-8092INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE

Frequently Asked Questions

What is NSN 4820-01-111-0783?

NSN 4820-01-111-0783 is a Valve,regulating,fluid Pressure, manufactured by Hunt Valve Company Inc Dba Union Flonetics, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-111-0783?

NSN 4820-01-111-0783 has 3 cross-referenced part numbers: D49911 2IN (Hunt Valve Company Inc Dba Union Flonetics), D49911 2IN (Hunt Valve Company, Inc.), MIL-V-24384 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4820-01-111-0783?

There are 11 known substitutes for 4820-01-111-0783: 4820-00-096-8563, 4820-00-455-8505, 4820-00-455-8577 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D49911 2IN?

Key specifications for D49911 2IN: Material: COPPER ALLOY 836 BODY; Material Document and Classification: UNABLE TO DECODE; Nondefinitive Spec/std Data: A CLASS AND 2.000IN. SIZE AND 3 TYPE IN; Second End Relationship with First End: IDENTICAL. 14 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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