Dust & Gas Explosion Proof Valve Positioner | Ex db IIC T4~T6 Gb + Ex tb IIIC, 0.5% Accuracy, HART7, IP66
This dust and gas explosion-proof valve positioner features Ex db IIC T4~T6 Gb for gas protection and Ex tb IIIC for dust protection with IP66 protection. It offers 0.5% F.S. positioning accuracy and supports 4-20mA DC input with HART7 communication. Built with an auto-tuning function for valve zero and span optimization, it includes self-diagnosis for current values, travel time, and deadband. Its 3-off position safety function (full open, full close, hold, manual) eliminates the need for external solenoid valves. With static air consumption below 36L/h and a compact 3.2kg design, it ensures energy-efficient and reliable operation.
Request a Quote
Enter the quantity you need and add to your quote list for pricing inquiries.
Air-efficient
Using one MVP positioner can help you:
Annual air saved = (0.4 – 0.036) × 24 hours × 365 days = 3200 Nm³
Annual energy saved = 3200 Nm³ × 0.44 kWh = 1408 kWh
(128 kg standard oil, 160 kg standard coal)
Fail-safe hold
The MVP positioner comes with a built-in three-break (power failure, air failure, signal failure) position retention function. It can achieve position retention in the event of power failure, air failure, or signal loss without the need for any external accessories such as solenoid valves or lock-up valves.
Key parameters
| Parameter | Specification |
| Steady-State Air Consumption | < 36 L/H |
| Compatible Actuators | Single-acting and double-acting |
| Feedback Output | 4 ~ 20 mA DC |
| Dead Band | Adjustable from 0.1% to 10% |
| Basic Error | ≤ ±0.5% F.S. |
| Hysteresis | ≤ 0.5% F.S. |
| Ambient Temperature | -40 ~ +65°C (T6) / 70°C (T5) / 80°C (T4) |
| Ambient Humidity | 5 ~ 95% RH |
| Vibration Resistance | 15 ~ 150 Hz @ 2g |
| Ingress Protection Rating | IP66 (customizable upon request) |
| Explosion Protection Rating | Ex db IIC T4...T6 Gb / Ex tb IIIC T80°C...T105°C Db |
FAQ
We are a manufacturer with our own factory and independent R&D team. Our valve positioners are designed and produced in-house.
Yes, we support customized housing material, valve characteristic curves, and other configurations. Auto-tuning and self-diagnosis functions are available.
Our valve positioner achieves 0.5% F.S. positioning accuracy with 1ms response time and <0.015%FS/°C temperature drift.
It features a 3-off position safety function (full open, full close, hold, manual) and self-diagnosis for current values, travel time, and deadband.
The static air consumption is less than 36L/h, ensuring energy-efficient operation and reduced long-term costs.
It is widely used in chemical, petroleum, and pharmaceutical industries requiring precise valve control in hazardous environments.
