PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SF4Disk,valve

Circor Naval Solutions Llc Dba Warren Pumps · NSN 4820-00-398-9326 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-398-9326 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-398-9326. Primary manufacturer part number: SF4.
Features
  • Disk,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • Style Designator: PLAIN
  • Outside Diameter: 2.600 INCHES NOMINAL IN
  • Inside Diameter: 0.595 INCHES NOMINAL IN
  • 12 verified cross-references
  • Primary manufacturer: Circor Naval Solutions Llc Dba Warren Pumps
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-398-9326, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 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
NSN4820-00-398-9326
Primary Part NumberSF4
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Naval Solutions Llc Dba Warren Pumps
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Style DesignatorPLAIN
Outside Diameter2.600 INCHES NOMINAL IN
Inside Diameter0.595 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-103-7612MC8710 INTERCHANGEABLE
Semiconductor Device,diode
Microsemi Corp - Massachusetts
5340-00-168-0960SJ2 INTERCHANGEABLE
Cover,access
Circor Naval Solutions Llc Dba Warren Pumps
4320-00-177-31253167539PC40T046 INTERCHANGEABLE
Piston and Follower Assembly
Naval Ship Systems Command
4320-00-218-4183WU1 INTERCHANGEABLE
Valve Plate,hydraulic Motor-Pump
Circor Naval Solutions Llc Dba Warren Pumps
4310-00-218-4184WT1 INTERCHANGEABLE
Plate,valve Stop
Circor Naval Solutions Llc Dba Warren Pumps
4810-00-218-4191BS7-2082 PIECES 61 THRU 63 INTERCHANGEABLE
Piston,valve
Circor Naval Solutions Llc Dba Warren Pumps
4320-00-336-8928SK-2 INTERCHANGEABLE
Sleeve,shaft,pump
Circor Naval Solutions Llc Dba Warren Pumps
3455-00-618-6007 INTERCHANGEABLE
Cutter,milling,end
6230-01-100-1720S-F-4 INTERCHANGEABLE
Adapter
North Star Lighting Inc
5120-01-367-025010-040 INTERCHANGEABLE
Hammer,hand
Nupla Corporation
Cross-Reference Index
Part NumberManufacturer
BS1126PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS7-2082 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1733PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
SF4 PRIMARY Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1125PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1704PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1705PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1136PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS7-2082PC150 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1731PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS1137PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
BS5-1715PC177 Circor Naval Solutions Llc Dba Warren Pumps (USA)
Related Parts
5961-00-103-7612INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
MC8710
5340-00-168-0960INTERCHANGEABLE
COVER,ACCESS
SJ2
4320-00-177-3125INTERCHANGEABLE
PISTON AND FOLLOWER ASSEMBLY
3167539PC40T046
4320-00-218-4183INTERCHANGEABLE
VALVE PLATE,HYDRAULIC MOTOR-PUMP
WU1
4310-00-218-4184INTERCHANGEABLE
PLATE,VALVE STOP
WT1
4810-00-218-4191INTERCHANGEABLE
PISTON,VALVE
BS7-2082 PIECES 61 THRU 63
4320-00-336-8928INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
SK-2
3455-00-618-6007INTERCHANGEABLE
CUTTER,MILLING,END
6230-01-100-1720INTERCHANGEABLE
ADAPTER
S-F-4
5120-01-367-0250INTERCHANGEABLE
HAMMER,HAND
10-040
8125-01-368-7852INTERCHANGEABLE
SLEEVE DISPENSER,BOTTLE
5975-01-553-6436INTERCHANGEABLE
COVER,CONDUIT OUTLET

Frequently Asked Questions

What is NSN 4820-00-398-9326?

NSN 4820-00-398-9326 is a Disk,valve, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-398-9326?

NSN 4820-00-398-9326 has 12 cross-referenced part numbers: BS1126PC177 (Circor Naval Solutions Llc Dba Warren Pumps), BS7-2082 (Circor Naval Solutions Llc Dba Warren Pumps), BS5-1733PC177 (Circor Naval Solutions Llc Dba Warren Pumps), SF4 (Circor Naval Solutions Llc Dba Warren Pumps), BS1125PC177 (Circor Naval Solutions Llc Dba Warren Pumps) and 7 more.

What NSN replaces 4820-00-398-9326?

There are 12 known substitutes for 4820-00-398-9326: 5961-00-103-7612, 5340-00-168-0960, 4320-00-177-3125 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SF4?

Key specifications for SF4: Overall Height: 0.145 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING; Style Designator: PLAIN; End Item Identification: WARREN 9X6X16 VERTICAL SINGLE PUMP. 7 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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