PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S71021Stem,fluid Valve

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-01-434-5351 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-434-5351 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-434-5351. Primary manufacturer part number: S71021.
Features
  • Stem,fluid Valve — FSC 4820
  • Valve Type for Which Designed: RELIEF
  • Valve Model Number for Which Designed: JOS
  • Material: STEEL COMP 316
  • 3 verified cross-references
  • Primary manufacturer: Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 316 construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-434-5351, 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 3 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-434-5351
Primary Part NumberS71021
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
Valve Type for Which DesignedRELIEF
Valve Model Number for Which DesignedJOS
MaterialSTEEL COMP 316
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-01-434-5346103008 INTERCHANGEABLE
Nozzle,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-5349S71020 INTERCHANGEABLE
Retainer,disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-5350103383 INTERCHANGEABLE
Guide,valve Stem
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-5352104303 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-6633103169 INTERCHANGEABLE
Nozzle,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-6634104161 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-6635S58981 INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-6637103217 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-6641103215 INTERCHANGEABLE
Nozzle,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-434-666161428000E INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
S71021 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
DS-G-63177-4 PC NO. 9 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
DS-G-63177-4 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Related Parts
4820-01-434-5346INTERCHANGEABLE
NOZZLE,VALVE
103008
4820-01-434-5349INTERCHANGEABLE
RETAINER,DISK,VALVE
S71020
4820-01-434-5350INTERCHANGEABLE
GUIDE,VALVE STEM
103383
4820-01-434-5352INTERCHANGEABLE
DISK,VALVE
104303
4820-01-434-6633INTERCHANGEABLE
NOZZLE,VALVE
103169
4820-01-434-6634INTERCHANGEABLE
DISK,VALVE
104161
4820-01-434-6635INTERCHANGEABLE
STEM,FLUID VALVE
S58981
4820-01-434-6637INTERCHANGEABLE
SEAT,VALVE
103217
4820-01-434-6641INTERCHANGEABLE
NOZZLE,VALVE
103215
4820-01-434-6661INTERCHANGEABLE
VALVE,SAFETY RELIEF
61428000E
4820-01-434-6662INTERCHANGEABLE
RETAINER,DISK,VALVE
104245
4820-01-434-6663INTERCHANGEABLE
VALVE,SAFETY RELIEF
84854000

Frequently Asked Questions

What is NSN 4820-01-434-5351?

NSN 4820-01-434-5351 is a Stem,fluid Valve, 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 4820-01-434-5351?

NSN 4820-01-434-5351 has 3 cross-referenced part numbers: S71021 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), DS-G-63177-4 PC NO. 9 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), DS-G-63177-4 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).

What NSN replaces 4820-01-434-5351?

There are 12 known substitutes for 4820-01-434-5351: 4820-01-434-5346, 4820-01-434-5349, 4820-01-434-5350 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S71021?

Key specifications for S71021: Valve Type for Which Designed: RELIEF; Special Features: FOR SAFETY RELIEF VALVE; Valve Model Number for Which Designed: JOS; Material: STEEL COMP 316. 5 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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