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Flowserve Logix 520MD Digital Piezo Diagnostics Control Valve Chemical Power Plant Valve Positioner

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US $1000.00 - 1250.00/ Set
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Flowserve Logix 520MD Digital Piezo Diagnostics Control Valve Chemical Power Plant Valve Positioner
Features Gallery Product Description Ratings & Review Request A Quote
Features
Specifications
Input Signal: 4-20 MA
Supply Pressure: 1.4 - 7 Bar (20 - 100 Psi)
Operating Temperature: -40°C To +85°C
Enclosure Protection: IP66 / NEMA 4X
Repeatability: ≤0.5%
Communication Protocol: HART (optional)
Basic Infomation
Brand Name: Flowserve
Model Number: 520MD
Payment & Shipping Terms
Packaging Details: Cardboard box/Wooden crate
Delivery Time: 6-8 weeks
Payment Terms: T/T
Supply Ability: 1000 units per year
Product Description

Product Overview

The Flowserve Logix 520MD digital positioner is built for pneumatic control valves using HART communication and piezo technology. It offers easy local configuration, low air consumption in steady state, and repeatable performance. It serves as a practical choice for plants needing reliable valve positioning without complex advanced diagnostics.

Technical Specifications

Parameter Specification
Input Signal 4–20 mA DC
Communication HART
Supply Air Pressure 1.5–6.0 bar
Air Consumption (steady state) 0.08–0.12 Nm³/h
Output Capacity Up to 7.0 Nm³/h @ 6 bar
Linearity < ±1.0% FS typical
Repeatability < 0.2% FS
Operating Temperature –40 °C to +80 °C
Enclosure IP66 / NEMA 4X
Housing Aluminum

Application Industry

  • Chemical processing plants
  • Power plant auxiliary valves
  • Oil & gas production
  • General manufacturing automation
  • Petrochemical utilities

Common Problems & Solutions

  • Problem: Air quality issues causing erratic behavior → Solution: Install proper filter-regulator and maintain dry air
  • Problem: Calibration after valve maintenance → Solution: Fast local calibration buttons
  • Problem: Steady-state air usage concerns → Solution: Low consumption piezo design helps reduce costs

Replacement Models

  • Legacy Flowserve digital positioners
  • Logix 3200MD for non-IS applications

Why Buy From Us

  • Authentic Flowserve product backed by warranty
  • Good value pricing
  • Helpful guidance for basic setup
  • Reliable spare parts availability

Stock & Delivery Time

  • Common models: 6–8 weeks
  • Configured or certified versions: 8–10 weeks

RFQ Form

Please provide:

  • Valve and actuator details (type and travel)
  • Supply air pressure available
  • Any hazardous area requirements
  • Quantity needed
  • Desired delivery timeline
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

A
Annie Dowson
United Kingdom Jan 8.2026
The Emerson AMS Trex we received is top quality – solid build, responsive touchscreen, and works perfectly with our HART and Fieldbus devices. It’s definitely made our commissioning and troubleshooting a lot more efficient. Also, big thanks to the seller – very professional, fast shipping, and they knew exactly what we needed. Super reliable supplier. Would absolutely buy from them again.
A
Alex
Switzerland Dec 1.2025
great price and fast delivery
A
Anggoro Fikri
Indonesia Jan 31.2025
good quality
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Get in touch with us
Contact Person : Mr. Edward Zhao
Tel : +8615000725058
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