PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1331TValve,globe

Flowserve Inc · NSN 4820-00-146-0535 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-146-0535 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-146-0535. Primary manufacturer part number: 1331T.
Features
  • Valve,globe — FSC 4820
  • Style Designator: STRAIGHT THRU
  • Bonnet Type: INSIDE SCREW
  • Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
  • Thread Series Designator: NPT ALL ENDS
  • Nominal Thread Size: 0.500 INCHES ALL ENDS IN
  • Material: STEEL UNS K03504 BODY
  • Thread Direction: RIGHT-HAND ALL ENDS
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Uns K03504 Body construction
General Description

The Valve,globe, cataloged under National Stock Number 4820-00-146-0535, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Flowserve Inc. Government technical data includes 15 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
NSN4820-00-146-0535
Primary Part Number1331T
Item NameValve,globe
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
Style DesignatorSTRAIGHT THRU
Bonnet TypeINSIDE SCREW
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Thread Series DesignatorNPT ALL ENDS
Nominal Thread Size0.500 INCHES ALL ENDS IN
MaterialSTEEL UNS K03504 BODY
Thread DirectionRIGHT-HAND ALL ENDS
Material Document and ClassificationASTM A105,GRADE 2 ASSN STD ALL MATERIAL RESPONSES OVERALL
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Features ProvidedBONNET PACKING
Bonnet Attachment MethodTHREADED
Flow Control DeviceSTEM OR DISK
Valve Operation MethodMANUAL
Maximum Operating Temp450.0 FAHRENHEIT SINGLE RESPONSE DEGF
Connection StylePLAIN,OPTIONAL END(PIPE) ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5930-00-022-81371333 INTERCHANGEABLE
Switch,rotary
Janco Corporation Dba Janco Corp Div Mason Controls
5342-00-086-09341333 INTERCHANGEABLE
Clamp,cadmium Plate
Allsteel Llc
5950-00-146-24481333 INTERCHANGEABLE
Transformer,special
S and H Industries
6810-00-237-4400 INTERCHANGEABLE
Dimethyl-P-Phenylenediamine Sulf
6850-00-245-0447SPRAYON 02002 INTERCHANGEABLE
Cleaning and Lubricating Compoun
The Sherwin-Williams Company
5320-00-423-80381333 INTERCHANGEABLE
Rivet,solid
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5342-00-490-1940CL75 INTERCHANGEABLE
Strap,conduit
Egs Electrical Group Appleton Div
5340-00-498-238811640398-1 INTERCHANGEABLE
Lever,manual Control
U S Army Tank Automotive Command Amsta-Im-Mm
5950-00-518-07031333 INTERCHANGEABLE
Transformer,power
Inrcore, Llc Div Inrcore
4820-00-546-58121333 INTERCHANGEABLE
Seat,valve
Lawler Manufacturing Company, Inc.
Cross-Reference Index
Part NumberManufacturer
1331T PRIMARY Flowserve Inc (USA)
1331 1/2IN Flowserve Inc (USA)
1333 Flowserve Inc (USA)
Related Parts
5930-00-022-8137INTERCHANGEABLE
SWITCH,ROTARY
1333
5342-00-086-0934INTERCHANGEABLE
CLAMP,CADMIUM PLATE
1333
5950-00-146-2448INTERCHANGEABLE
TRANSFORMER,SPECIAL
1333
6810-00-237-4400INTERCHANGEABLE
DIMETHYL-P-PHENYLENEDIAMINE SULF
6850-00-245-0447INTERCHANGEABLE
CLEANING AND LUBRICATING COMPOUN
SPRAYON 02002
5320-00-423-8038INTERCHANGEABLE
RIVET,SOLID
1333
5342-00-490-1940INTERCHANGEABLE
STRAP,CONDUIT
CL75
5340-00-498-2388INTERCHANGEABLE
LEVER,MANUAL CONTROL
11640398-1
5950-00-518-0703INTERCHANGEABLE
TRANSFORMER,POWER
1333
4820-00-546-5812INTERCHANGEABLE
SEAT,VALVE
1333
5930-00-549-0308INTERCHANGEABLE
SWITCH,TOGGLE
682324PC4
5360-00-600-4326INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION

Frequently Asked Questions

What is NSN 4820-00-146-0535?

NSN 4820-00-146-0535 is a Valve,globe, manufactured by Flowserve Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-146-0535?

NSN 4820-00-146-0535 has 3 cross-referenced part numbers: 1331T (Flowserve Inc), 1331 1/2IN (Flowserve Inc), 1333 (Flowserve Inc).

What NSN replaces 4820-00-146-0535?

There are 12 known substitutes for 4820-00-146-0535: 5930-00-022-8137, 5342-00-086-0934, 5950-00-146-2448 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1331T?

Key specifications for 1331T: Style Designator: STRAIGHT THRU; Bonnet Type: INSIDE SCREW; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; Thread Series Designator: NPT ALL ENDS. 16 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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