PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-300Valve,regulating,fluid Pressure

Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives · NSN 4820-00-725-3911 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-725-3911 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-725-3911. Primary manufacturer part number: 40-300.
Features
  • Valve,regulating,fluid Pressure — FSC 4820
  • Temp Rating: -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF
  • Media for Which Designed: AIR
  • Material: STEEL CORROSION RESISTING STEM
  • Material: COPPER ALLOY BODY
  • First End Connection Type: THREADED INTERNAL PIPE
  • Second End Relationship with First End: IDENTICAL
  • Valve Loading Method: SPRING
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Stem construction
General Description

The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-725-3911, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN4820-00-725-3911
Primary Part Number40-300
Item NameValve,regulating,fluid Pressure
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSiemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
StatusACTIVE
Temp Rating-40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF
Media for Which DesignedAIR
MaterialSTEEL CORROSION RESISTING STEM
MaterialCOPPER ALLOY BODY
First End Connection TypeTHREADED INTERNAL PIPE
Second End Relationship with First EndIDENTICAL
Valve Loading MethodSPRING
Thread Size and Series/type Designator1/4-18 NPT FIRST END
Body StyleSTRAIGHT THRU
Outlet Pressure Range0.0 TO 300.0 CAMERA MOUNT
Maximum Inlet Pressure RatingERR-060
End Connection Quantity2
First End Thread DirectionRIGHT-HAND
Furnished ItemsPRESSURE BREAKER
FilterNOT INCLUDED
Valve Stem DesignSINGLE SEAT
Regulation TypeMANUAL SINGLE STAGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6680-00-160-12002587614 INTERCHANGEABLE
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Naval Ship Systems Command
2940-00-179-550542970 INTERCHANGEABLE
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Wix Corp
6150-00-214-2682119032 INTERCHANGEABLE
Housing,electrical Rotating Equi
Schwitzer Engine Components a Household Intl Co
3455-00-224-3667B94.19 TABLE 7 6X1/8X1 INTERCHANGEABLE
Cutter,milling,metal Slitting
American National Standards Institute Incorporated Dba American National Standards Institute
5950-00-723-388140300 INTERCHANGEABLE
Saturable Reactor
Freed Transformer Co
5930-00-929-269740300 INTERCHANGEABLE
Switch,thermostatic
Norris Dispenser Company
6685-01-377-6386 INTERCHANGEABLE
Gage,pressure,dial Indicating
7035-01-434-6134 INTERCHANGEABLE
Eraser,magnetic
6685-01-494-063440-0300 INTERCHANGEABLE
Gage,vacuum,indicating
Parker Hannifin Corporation Div Village Marine Tech
6635-01-615-517840300 INTERCHANGEABLE
Testing Machine,soil Liquid Limi
Meter Group Inc Dba Meter Group Inc Usa
Cross-Reference Index
Part NumberManufacturer
1571276 Meggitt (uk) Limited (GBR)
40-300 PRIMARY Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives (USA)
Related Parts
6680-00-160-1200INTERCHANGEABLE
GAGE ROD-BREATHER,LIQUID LEVEL
2587614
2940-00-179-5505INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42970
6150-00-214-2682INTERCHANGEABLE
HOUSING,ELECTRICAL ROTATING EQUI
119032
3455-00-224-3667INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
B94.19 TABLE 7 6X1/8X1
5950-00-723-3881INTERCHANGEABLE
SATURABLE REACTOR
40300
5930-00-929-2697INTERCHANGEABLE
SWITCH,THERMOSTATIC
40300
6685-01-377-6386INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
7035-01-434-6134INTERCHANGEABLE
ERASER,MAGNETIC
6685-01-494-0634INTERCHANGEABLE
GAGE,VACUUM,INDICATING
40-0300
6635-01-615-5178INTERCHANGEABLE
TESTING MACHINE,SOIL LIQUID LIMI
40300
5330-01-700-3790INTERCHANGEABLE
GASKET
40300

Frequently Asked Questions

What is NSN 4820-00-725-3911?

NSN 4820-00-725-3911 is a Valve,regulating,fluid Pressure, manufactured by Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-725-3911?

NSN 4820-00-725-3911 has 2 cross-referenced part numbers: 1571276 (Meggitt (uk) Limited), 40-300 (Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives).

What NSN replaces 4820-00-725-3911?

There are 11 known substitutes for 4820-00-725-3911: 6680-00-160-1200, 2940-00-179-5505, 6150-00-214-2682 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-300?

Key specifications for 40-300: Temp Rating: -40.0 FAHRENHEIT MINIMUM AND 180.0 FAHRENHEIT MAXIMUM DEGF; Media for Which Designed: AIR; Material: STEEL CORROSION RESISTING STEM; Material: COPPER ALLOY BODY. 17 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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