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| Categories | Pneumatic Control Valves |
|---|---|
| Brand Name: | Flowserve |
| Model Number: | Logix 520MD |
| Place of Origin: | China |
| MOQ: | 5 |
| Price: | 2000 dollars |
| Payment Terms: | T/T |
| Supply Ability: | 600 units per year |
| Delivery Time: | 60 days |
| Packaging Details: | Carton + Wooden crate + Protective packaging |
| Communication Protocol: | HART 5 or HART 7 |
| Available Mounting: | Sliding-stem Linear; Quarter-turn Rotary Applications |
| Analog Input Signal: | 4-20 mA DC |
| Supply Voltage: | 8-30 VDC |
| Approvals: | FM; ATEX; IECEx |
| Electrical Connection: | 1 /2 NPT internal or M20 |
| Company Info. |
| Xiangjing (Shanghai) M&E Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
The Flowserve Logix™ 520MD+ is a next-generation two-wire 4-20 mA digital valve positioner with full HART® 7 communication. It delivers precise stem positioning for both single- and double-acting linear or rotary actuators while providing powerful ValveSight™ diagnostics, modular expansion cards, and local LCD push-button operation — all powered directly by the control signal.
| Parameter | Specification |
|---|---|
| Input Signal | 4–20 mA DC (HART 7 on 520MD+) |
| Minimum Operating Current | 3.8 mA |
| Compliance Voltage | 10 VDC @ 20 mA (520MD+) |
| Supply Pressure | 1.5–6.2 bar (single-acting) / 1.5–10.3 bar (double-acting) |
| Output Capacity | Single-acting: 20.8 Nm³/h @ 4.1 bar Double-acting: 30.6 Nm³/h @ 4.1 bar |
| Air Consumption | Single-acting: 0.082 Nm³/h @ 4.1 bar Double-acting: 0.637 Nm³/h @ 4.1 bar |
| Linearity | ±1.25 % F.S. |
| Resolution / Repeatability | ≤ 0.25 % |
| Operating Temperature | –52 °C to +85 °C (–61.6 °F to +185 °F) |
| Enclosure | IP66 / NEMA 4X |
| Hazardous Area Approvals | ATEX, IECEx, cFMus (IS, Explosion-proof, Type n, tb) |
| Weight (base unit) | 1.76 kg (single-acting relay) / 1.88 kg (double-acting) |
Ideal for oil & gas, petrochemical, power generation, refining, and any facility requiring HART diagnostics, partial-stroke testing, or SIL-rated safety loops.
Q: How fast is QUICK-CAL?
A: Typically completes full stroke calibration in under 60 seconds
with one button press.
Q: Can I run ValveSight diagnostics remotely?
A: Yes — full HART 7 access via DTM, handheld, or host system.
Q: What is the warranty?
A: Standard Flowserve 3-year warranty (extended options available).
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
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