Toggle menu FLW, Inc.
  • Contact Us
  • My Account
  • Sign in or Create an account
  •   Items / $0.00

800-576-6308

available 7am to 5pm PT

  • Brands
    • Barksdale
    • GO Regulator
    • GO Switch by Topworx
    • KOBOLD Instruments
    • ASCO
    • Ashcroft
    • AI-Tek Instruments
    • Automatic Timing and Controls (ATC)
    • Teledyne Hastings Instruments
    • Bellofram Precision Controls
    • Haskel
    • Freudenberg NOK Sealing Technologies
    • WIKA Instruments
    • TSI Alnor
    • Meriam Process Technologies
    • International Power
    • Mensor
    • ChemTec
    • GPI Flomec
    • WIKA High Precision
    • DH Budenberg
    • View All Brands
  • Products
    • Accessories
    • Accumulators
    • Air Amplifiers
    • Air Capture Hoods
    • Air Quality Meters
    • Air Velocity Meters
    • Air Velocity Transducers
    • Bimetal Thermometers
    • Bypass Level
    • Calibrators
    • Circular Charts
    • Counters
    • Deadweight Testers
    • Duct Leakage Testers
    • Flow Meters
    • Flow Monitors
    • Flow Valves
    • Gas Boosters
    • Hart Communicators
    • Lab Hood Monitors
    • Level Switches
    • Limit Switches
    • Pneumatic Pumps
    • Power Supplies
    • Pressure Gauges
    • Pressure Regulators
    • Pressure Switches
    • Pressure Transducers
    • Pressure Valves
    • Solenoid Valves
    • Solenoid Valve Rebuild Kits
    • Solenoid Valve Coil Kits
    • Speed Sensors
    • Tachometer Transducers
    • Tachometers
    • Temperature Controllers
    • Temperature Switches
    • Thermometers
    • Time Delay Relays
    • Timers
    • Vacuum Instruments
    • Valve Controllers
    • View All Products
  • Contact
  • About

  • Brands
    • All Brands
    • Barksdale
    • GO Regulator
    • GO Switch by Topworx
    • KOBOLD Instruments
    • ASCO
    • Ashcroft
    • AI-Tek Instruments
    • Automatic Timing and Controls (ATC)
    • Teledyne Hastings Instruments
    • Bellofram Precision Controls
    • Haskel
    • Freudenberg NOK Sealing Technologies
    • WIKA Instruments
    • TSI Alnor
    • Meriam Process Technologies
    • International Power
    • Mensor
    • ChemTec
    • GPI Flomec
    • WIKA High Precision
    • DH Budenberg
  • Products
    • All Products
    • Accessories
    • Accumulators
    • Air Amplifiers
    • Air Capture Hoods
    • Air Quality Meters
    • Air Velocity Meters
    • Air Velocity Transducers
    • Bimetal Thermometers
    • Bypass Level
    • Calibrators
    • Circular Charts
    • Counters
    • Deadweight Testers
    • Duct Leakage Testers
    • Flow Meters
    • Flow Monitors
    • Flow Valves
    • Gas Boosters
    • Hart Communicators
    • Lab Hood Monitors
    • Level Switches
    • Limit Switches
    • Pneumatic Pumps
    • Power Supplies
    • Pressure Gauges
    • Pressure Regulators
    • Pressure Switches
    • Pressure Transducers
    • Pressure Valves
    • Solenoid Valves
    • Solenoid Valve Rebuild Kits
    • Solenoid Valve Coil Kits
    • Speed Sensors
    • Tachometer Transducers
    • Tachometers
    • Temperature Controllers
    • Temperature Switches
    • Thermometers
    • Time Delay Relays
    • Timers
    • Vacuum Instruments
    • Valve Controllers
  • Contact
  • About
  • My Account
  • Wish LiST
  • Gift Certificates
  • Home
  • Valve Controllers
  • GO Switch DXP-L21GN4B TopWorx DX Series Valve Controller
GO Switch DXP-L21GN4B TopWorx DX Series Valve Controller
  • GO Switch DXP-L21GN4B TopWorx DX Series Valve Controller
  • GO Switch DXP-L21GN4B TopWorx DX Series Valve Controller

GO Switch by Topworx

GO Switch DXP-L21GN4B TopWorx DX Series Valve Controller

Was:
Now: $834.00
Special Pricing for Volume Buyers, OEMs, and Resellers. 
For bulk orders or special pricing, contact FLW directly.
Note: Store.FLW.com is for credit card orders only and is not connected to existing FLW Customer Accounts.
Quantity:
Availability:
⚠️ This item is currently out of stock but available for purchase. Delivery timelines for out-of-stock items vary depending on the brand and product. Click here for more information.
PART NUMBER:
DXP-L21GN4B
SHIPPING WEIGHT:
3.00 LBS
SHIPPING:

🚚 Free Ground Shipping on Qualifying Orders (See Details)

All international orders must be placed directly with an FLW product specialist. Get in touch or read our shipping policy.

Adding to cart… The item has been added
  • Description
  • Specifications
  • Accessories

Description

The TopWorx DXP-L21GN4B valve controller is a reliable and versatile device that allows you to monitor and control your valves remotely. It features a robust design, a high-performance microprocessor, and a variety of communication options. The DXP-L21GN4B can handle harsh environments, extreme temperatures, and high vibration. It also supports HART, Foundation Fieldbus, and Profibus protocols, making it compatible with most control systems. Whether you need to control on/off valves, modulating valves, or rotary valves, the DXP-L21GN4B can meet your needs and ensure optimal performance.

State of California Proposition 65

WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Product Specifications

Enclosure(DXP) - Tropicalized Aluminum
Bus/Sensor(2)GO Switches SPDT Hermetic Seal
Area ClassificationExplosionproof / Flameproof
Visual DisplayStandard 90° Green OPEN, Red CLOSED
ShaftNAMUR 316 Stainless Steel
Conduit Entries(2) 3/4" NPT
(2) 1/2" NPT
O-RingsBuna-N
PilotNo pilot device(s)
Spool ValveNo spool valve
Valve CvNo spool valve
Manual OverrideNo override
Regional CertsNo regional cert

Literature & Docs

Accessories

  • NAMUR SS Mounting Kit 4N30130-G41S
    GO Switch 4N30130-G41S NAMUR SS Mounting Kit
    Was:
    Now: $64.00
    In Stock
    Add To Cart View More
  • Valvetop Mounting Kit 4N20080-G41S
    GO Switch 4N20080-G41S Valvetop Mounting Kit
    Was:
    Now: $64.00
    In Stock
    Add To Cart View More

FREE UPS GROUND SHIPPING

×

Orders that qualify for FREE UPS Ground shipping

  • Order total greater than $250.00
  • Total cart weight is less than 50 lbs
  • Shipping address located within the lower 48 contiguous states
!
FLW logo

FLW, Inc. specializes in the sales of physical measurement, control and calibration products. We carry over 50 top product lines and can calibrate & service most of the brands we sell. We're happy to help.

Sales

  • Brands
  • Products

Service

  • Calibration

Systems

  • Engineered Systems

Company

  • About
  • Quality
  • Locations
  • Contact
  • Privacy Policy
  • Terms & Conditions

FLW, Inc.

  • 5672 Bolsa Avenue
    Huntington Beach, CA 92649 USA
  • 6860 Argonne Street
    Unit C
    Denver, CO 80249 USA

(800) 576-6308 |

Copyright © 2026 FLW, Inc. All rights reserved. S.D.G.