PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A39350Valve,safety Relief

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-00-153-8193 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-153-8193 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-153-8193. Primary manufacturer part number: A39350.
Features
  • Valve,safety Relief — FSC 4820
  • Bonnet Type: EXPOSED SPRING
  • Recess Nominal Diameter: 8.750 INCHES FIRST END IN
  • Material: STEEL COMP 304 SEAT
  • Valve Discharge Flow Rate: 49800.0 POUNDS PER HOUR LBS
  • Material: NICKEL ALLOY 400 STEM
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY VALVE DISCHARGE FLOW RATE AND BODY MATERIAL REQUIREMENTS
  • Style Designator: ANGLE FLANGED ENDS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 304 Seat construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-153-8193, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-153-8193
Primary Part NumberA39350
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
Bonnet TypeEXPOSED SPRING
Recess Nominal Diameter8.750 INCHES FIRST END IN
MaterialSTEEL COMP 304 SEAT
Valve Discharge Flow Rate49800.0 POUNDS PER HOUR LBS
MaterialNICKEL ALLOY 400 STEM
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY VALVE DISCHARGE FLOW RATE AND BODY MATERIAL REQUIREMENTS
Style DesignatorANGLE FLANGED ENDS
Opening Pressure Setting1400.0 POUNDS PER SQUARE INCH LBS
Bolt Circle Nominal Diameter7.500 INCHES FIRST END IN
Bolt Circle Nominal Diameter7.875 INCHES SECOND END IN
Flange Face DesignRECESSED STRAIGHT FIRST END
MaterialSTEEL COMP 304 FLOW CONTROL DEVICE
Nominal Thickness1.688 INCHES FIRST END IN
Flange Face DesignRAISED STRAIGHT SECOND END
Connection TypeFLANGE SECOND END
Connection TypeFLANGE FIRST END
Features ProvidedPRESSURE TIGHT OUTLET SIDE
Bolt Hole Nominal Diameter0.875 INCHES SECOND END IN
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY VALVE DISCHARGE FLOW RATE AND BODY MATERIAL REQUIREMENTS
Bolt Hole Nominal Diameter0.875 INCHES SECOND END IN
Nominal Outside Diameter10.000 INCHES SECOND END IN
Renewable Seat Ring TypeTHREADED
Recess Nominal Depth0.062 INCHES FIRST END IN
Valve Size2.500 INCHES IN
Recess Nominal Diameter8.750 INCHES FIRST END IN
Valve Size2.500 INCHES IN
Raised Face Nominal Diameter6.188 INCHES SECOND END IN
Nominal Outside Diameter10.000 INCHES SECOND END IN
Recess Nominal Depth0.062 INCHES FIRST END IN
Nominal Thickness1.188 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-153-8194 INTERCHANGEABLE
Valve,safety Relief
4810-00-757-5086S56036 INTERCHANGEABLE
Parts Kit,safety Relief Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4410-00-757-5087S21964AND040326AND008142 INTERCHANGEABLE
Spindle Assembly,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-046-4700028062 INTERCHANGEABLE
Retainer,disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-046-562543604 INTERCHANGEABLE
Adjusting Bolt,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-165-5983019272 INTERCHANGEABLE
Rod,setscrew
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
A39350 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
A39350 M0D Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
H3315563 Naval Ship Systems Command (USA)
Related Parts
4820-00-153-8194INTERCHANGEABLE
VALVE,SAFETY RELIEF
4810-00-757-5086INTERCHANGEABLE
PARTS KIT,SAFETY RELIEF VALVE
S56036
4410-00-757-5087INTERCHANGEABLE
SPINDLE ASSEMBLY,VALVE
S21964AND040326AND008142
4820-01-046-4700INTERCHANGEABLE
RETAINER,DISK,VALVE
028062
4820-01-046-5625INTERCHANGEABLE
ADJUSTING BOLT,VALVE
43604
4820-01-165-5983INTERCHANGEABLE
ROD,SETSCREW
019272

Frequently Asked Questions

What is NSN 4820-00-153-8193?

NSN 4820-00-153-8193 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-153-8193?

NSN 4820-00-153-8193 has 3 cross-referenced part numbers: A39350 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), A39350 M0D (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), H3315563 (Naval Ship Systems Command).

What NSN replaces 4820-00-153-8193?

There are 6 known substitutes for 4820-00-153-8193: 4820-00-153-8194, 4810-00-757-5086, 4410-00-757-5087 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A39350?

Key specifications for A39350: Bonnet Type: EXPOSED SPRING; Recess Nominal Diameter: 8.750 INCHES FIRST END IN; Material: STEEL COMP 304 SEAT; Valve Discharge Flow Rate: 49800.0 POUNDS PER HOUR LBS. 30 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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