PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

320-1/4Valve,ball

Shamrock Plumbing Sales Co · NSN 4820-01-521-9523 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-521-9523 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-521-9523. Primary manufacturer part number: 320-1/4.
Features
  • Valve,ball — FSC 4820
  • Material: STEEL COMP 316 BODY
  • Valve Operation Method: MANUAL
  • Material: STEEL COMP 316 FLOW CONTROL DEVICE
  • Style Designator: STRAIGHT THRU
  • Material: STEEL COMP 316 STEM
  • Material: PLASTIC POLYTRIFLUOROETHYLENE SEAT
  • 1 verified cross-reference
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 316 Body construction
General Description

The Valve,ball, cataloged under National Stock Number 4820-01-521-9523, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Shamrock Plumbing Sales Co. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-521-9523
Primary Part Number320-1/4
Item NameValve,ball
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerShamrock Plumbing Sales Co
StatusACTIVE
MaterialSTEEL COMP 316 BODY
Valve Operation MethodMANUAL
MaterialSTEEL COMP 316 FLOW CONTROL DEVICE
Style DesignatorSTRAIGHT THRU
MaterialSTEEL COMP 316 STEM
MaterialPLASTIC POLYTRIFLUOROETHYLENE SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-059-3904 INTERCHANGEABLE
Coil,radio Frequency
5330-00-285-382502243465 INTERCHANGEABLE
Gasket
Rolls-Royce Solutions America Inc
5330-00-955-7360 INTERCHANGEABLE
Gasket
5985-00-984-6057302-835 INTERCHANGEABLE
Line Section,radio Frequency Tra
Cpi Satcom & Antenna Technologies Inc.
2990-01-335-431232014 INTERCHANGEABLE
Head-Rotor Assembly
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5340-01-437-0027320-14 INTERCHANGEABLE
Slide,drawer,extension
Jonathan Engineered Solutions Corp. Dba Jonathan Engineered Solutions
5985-01-470-57923201-4 INTERCHANGEABLE
Attenuator,variable
Spectrum Control Inc Div Weinschel
4320-01-481-899132014 INTERCHANGEABLE
Pump Subassembly,rotary
Stanadyne Corporation Dba Stanadyne Diesel Systems
6515-01-603-77628702H INTERCHANGEABLE
Suture,nonabsorbable,surgical
Ethicon Us Llc Div Ethicon
5315-01-612-5994 INTERCHANGEABLE
Pin,straight,headless
Cross-Reference Index
Part NumberManufacturer
320-1/4 PRIMARY Shamrock Plumbing Sales Co (USA)
Related Parts
5950-00-059-3904INTERCHANGEABLE
COIL,RADIO FREQUENCY
5330-00-285-3825INTERCHANGEABLE
GASKET
02243465
5330-00-955-7360INTERCHANGEABLE
GASKET
5985-00-984-6057INTERCHANGEABLE
LINE SECTION,RADIO FREQUENCY TRA
302-835
2990-01-335-4312INTERCHANGEABLE
HEAD-ROTOR ASSEMBLY
32014
5340-01-437-0027INTERCHANGEABLE
SLIDE,DRAWER,EXTENSION
320-14
5985-01-470-5792INTERCHANGEABLE
ATTENUATOR,VARIABLE
3201-4
4320-01-481-8991INTERCHANGEABLE
PUMP SUBASSEMBLY,ROTARY
32014
6515-01-603-7762INTERCHANGEABLE
SUTURE,NONABSORBABLE,SURGICAL
8702H
5315-01-612-5994INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS

Frequently Asked Questions

What is NSN 4820-01-521-9523?

NSN 4820-01-521-9523 is a Valve,ball, manufactured by Shamrock Plumbing Sales Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-521-9523?

NSN 4820-01-521-9523 has 1 cross-referenced part number: 320-1/4 (Shamrock Plumbing Sales Co).

What NSN replaces 4820-01-521-9523?

There are 10 known substitutes for 4820-01-521-9523: 5950-00-059-3904, 5330-00-285-3825, 5330-00-955-7360 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 320-1/4?

Key specifications for 320-1/4: Material: STEEL COMP 316 BODY; Part Name Assigned by Controlling Agency: 1/4 INCH 2-PIECE, FULL PORT, THREADED ENDS, 1000 WOG, CONFORMS TO WW-V-35, TYPE II, CLASS C & D, STYLE 1 & 3 IN; Valve Operation Method: MANUAL; Material: STEEL COMP 316 FLOW CONTROL DEVICE. 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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