PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

741-5-4Seat,valve

Flowserve Corporation Div Flowserve Us Inc · NSN 4820-01-310-4731 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-310-4731 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-310-4731. Primary manufacturer part number: 741-5-4.
Features
  • Seat,valve — FSC 4820
  • Style Designator: PLAIN
  • Material: STEEL SEAT
  • 3 verified cross-references
  • Primary manufacturer: Flowserve Corporation Div Flowserve Us Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Seat construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-310-4731, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flowserve Corporation Div Flowserve Us Inc. Government technical data includes 2 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-310-4731
Primary Part Number741-5-4
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFlowserve Corporation Div Flowserve Us Inc
StatusACTIVE
Style DesignatorPLAIN
MaterialSTEEL SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3020-00-223-821374154 INTERCHANGEABLE
Gear,helical
Telemechanics Inc
5962-01-064-9590 INTERCHANGEABLE
Microcircuit,digital
4310-01-448-16775HCD-10-M551MX INTERCHANGEABLE
Compressor Unit,reciprocating
Gast Mfg Corp
Cross-Reference Index
Part NumberManufacturer
741-5-4 PRIMARY Flowserve Corporation Div Flowserve Us Inc (USA)
741-5 PIECE 4 Flowserve Corporation Div Flowserve Us Inc (USA)
741-5-4 Anchor/darling Valve Co (USA)
Related Parts
3020-00-223-8213INTERCHANGEABLE
GEAR,HELICAL
74154
5962-01-064-9590INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
4310-01-448-1677INTERCHANGEABLE
COMPRESSOR UNIT,RECIPROCATING
5HCD-10-M551MX

Frequently Asked Questions

What is NSN 4820-01-310-4731?

NSN 4820-01-310-4731 is a Seat,valve, manufactured by Flowserve Corporation Div Flowserve Us Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-310-4731?

NSN 4820-01-310-4731 has 3 cross-referenced part numbers: 741-5-4 (Flowserve Corporation Div Flowserve Us Inc), 741-5 PIECE 4 (Flowserve Corporation Div Flowserve Us Inc), 741-5-4 (Anchor/darling Valve Co).

What NSN replaces 4820-01-310-4731?

There are 3 known substitutes for 4820-01-310-4731: 3020-00-223-8213, 5962-01-064-9590, 4310-01-448-1677. Verify interchangeability with system specifications before substitution.

What are the specifications of 741-5-4?

Key specifications for 741-5-4: Style Designator: PLAIN; Material: STEEL SEAT. 2 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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