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Flowserve Logix 520MD Digital HART Pneumatic Actuator Oil Gas Petrochemical Valve Positioner Price

1
MOQ
US $1000.00 - 1200.00/ Set
Price
Flowserve Logix 520MD Digital HART Pneumatic Actuator Oil Gas Petrochemical Valve Positioner Price
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)
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Flowserve Logix 520MD pneumatic actuator

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HART digital valve positioner

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oil gas petrochemical control valve

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: 1800 sets per year
Product Description
Flowserve Logix 520MD Digital HART Valve Positioner
Product Overview

The Flowserve Logix 520MD is a digital HART positioner that uses piezo technology for accurate control of pneumatic actuators on linear and rotary valves. It accepts a standard 4–20 mA input signal and provides reliable positioning with local calibration via buttons. Many plants choose it for its low steady-state air consumption, straightforward setup, and solid performance in general process applications.

Technical Specifications
Parameter Specification
Input Signal 4–20 mA DC (two-wire)
Communication HART (5, 6, 7)
Supply Air Pressure 1.5–6.0 bar (22–87 psig)
Air Consumption (steady state) 0.08 Nm³/h @ 1.5 bar to 0.12 Nm³/h @ 6.0 bar
Output Capacity Up to 7.0 Nm³/h @ 6.0 bar
Linearity < ±1.0% FS typical
Repeatability < 0.2% FS
Deadband < 0.2% FS
Operating Temperature –40 °C to +80 °C
Enclosure Rating IP66 / NEMA 4X
Housing Material Aluminum (standard)
Application Industry
  • Chemical and petrochemical processing
  • Power generation utilities
  • Oil & gas facilities
  • General industrial valve control
  • Refineries and auxiliary systems
Common Problems & Solutions
  • Problem: Contaminated or wet air affecting performance → Solution: Use clean, dry instrument air per ISA-7.0.01
  • Problem: Initial setup and tuning → Solution: Simple local buttons for QUICK-CAL and auto-tune
  • Problem: High vibration environments → Solution: Robust design with proven reliability
Replacement Models
  • Older Flowserve Logix 3000 series
  • Logix 3200MD when intrinsic safety is not required
Why Buy From Us
  • Genuine Flowserve Logix product with warranty
  • Competitive pricing for standard applications
  • Practical support for installation and calibration
  • Access to common spare parts
Stock & Delivery Time
  • Standard configurations: 6–8 weeks typical
  • Special certifications or options: 6–10 weeks
RFQ Form Please provide:
  • Actuator type (linear or rotary) and travel range
  • Available supply air pressure
  • Hazardous area classification (if needed)
  • Housing material preference
  • Quantity & target delivery date
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

D
Daulet Nurgazin
Kazakhstan Mar 19.2026
I purchased the Flowserve 3821 and am very satisfied with the overall transaction. The item arrived in good condition, matched the specifications accurately, and performed as expected. The seller demonstrated strong professionalism, provided a reasonable price, and ensured the delivery schedule was met. A dependable supplier that I would confidently work with again.
A
Amir Rezaei
United Arab Emirates Jan 6.2026
We have been cooperating for 3 years with stable supply and reliable service
L
leyla kh
United Arab Emirates Sep 12.2025
We purchased 20 units of valve positioners for a refinery project in UAE. Delivery was fast and technical support was very professional.
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Get in touch with us
Contact Person : Mr. Edward Zhao
Tel : +8615000725058
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