Smart Pneumatic Valve Positioner: Self-Calibration, Signal Feedback & Multi-Valve Compatibility Guide

A pneumatic valve positioner is a core control accessory for pneumatic control valves, designed to convert electrical or pneumatic control signals into precise mechanical displacement to regulate valve stem position. It acts as a "bridge" between the control system (e.g., DCS, PLC) and the pneumatic actuator, ensuring the valve responds accurately to control commands. Widely used in oil & gas, petrochemical, power generation, water treatment, and industrial automation projects (e.g., China Railway construction projects), it enhances control precision, stability, and reliability of the valve system, critical for process parameter regulation (pressure, flow, temperature, level).

I. Product Introduction

The pneumatic valve positioner is a core control accessory for pneumatic control valves. Designed to convert electrical or pneumatic control signals into precise mechanical displacement, it regulates the position of the valve stem. Acting as a “bridge” between control systems (e.g., DCS, PLC) and pneumatic actuators, it ensures that valves respond accurately to control commands.

Widely used in oil and gas, petrochemical, power generation, water treatment, and industrial automation projects (e.g., China Railway construction projects), the pneumatic valve positioner enhances the control accuracy, stability, and reliability of valve systems, which is critical for the regulation of process parameters (pressure, flow rate, temperature, liquid level).

II. Product Features

LCD screen and 4 buttons for quick and easy automatic setting
Partial Stroke Testing (PST) function
Fault alarm function
Built-in automatic/manual switch knob
Self-diagnostic function
IP66/NEMA4X protection rating
Equipped with a large-flow pilot valve to speed up valve operation
Shock-resistant and vibration-resistant design

III. Technical Data

Specification	Details
Input Current Range	4~20mA DC
Internal Impedance	500Ω (at 20mA DC)
Input Air Pressure Range	0.14~0.7MPa
Stroke Range	Linear Stroke: 10~150mm, Rotary Stroke: 0~90º
Air Supply Connection Size	PT1/4, NPT1/4
Pressure Gauge Connection Size	PT1/8, NPT1/8
Electrical Connection Size	G(PF)1/2, NPT1/2
Explosion-Proof Rating	EX db IIC T5/T6
Enclosure Protection Rating	IP66
Ambient Temperature (Normal Operation)	Standard Type: -30℃~85℃ Low-Temperature Type: -40℃~85℃
Explosion-Proof Temperature Range	T5: -40℃~60℃ / T6: -40℃~40℃
Linearity	±0.5% F.S.
Sensitivity	±0.2% F.S.
Hysteresis	±0.5% F.S.
Repeatability	±0.3% F.S.
Air Consumption	Less than 2.3LPM (Supply Pressure = 0.14MPa)
Air Supply Quality Grade	Grade 3 (ISO 8573-1)
Flow Rate	More than 100LPM (Supply Pressure = 0.14MPa)
Material	Die-Cast Aluminum, 316 Stainless Steel
Weight	3.5kg

四．The main shape and connection size

About Us

Founded in 2016, Shanghai Wangye Valve Manufacturing Co., Ltd. is a professional industrial fluid control manufacturer with nearly a decade of experience, integrating R&D, intelligent production, sales, and customized solutions. Leveraging Shanghai’s advanced manufacturing advantages, we’ve built a reliable brand across petrochemicals, power, metallurgy, water treatment, and new energy industries, offering gate/ball/butterfly valves and tailored solutions for harsh conditions. Backed by advanced equipment, full-process quality control, and ISO certifications, we adhere to “Integrity, Quality, Customer Focus, Innovation” and provide comprehensive services, striving for long-term cooperation and continuous technological upgrading.

Why Choose Us

Talent and Efficient Team

WYE always insists that employees are the most valuable asset of the enterprise and the future of WYE; Adhere to prioritizing talent selection, education, and utilization in the development of enterprises; introducing talent as the highest return investment behavior. We regard talent as the primary resource for effective management, and pursue a high degree of harmony and unity between employee personal development and enterprise development.We encourage you to have a special perspective, think independently, and be good at organizing resources from all parties. Always maintain a responsible attitude towards results and a positive team spirit that is willing to share in every task..

High End Processing Equipment Creating Excellent Product Quality

Advanced automated production equipment and sophisticated assembly line production demonstrate first-class quality.Technical experts directly participate in production to ensure the concealment and reliability of the product.The increasing awareness of high-quality products and the continuous supply of industrial products have made WYE constantly changing.No matter how the world changes, the persistent spirit of excellence among WTE people remains unchanged.

Warehouse Strength

In our facility, raw materials (including core components and packaging supplies) are strictly controlled via a real-time digital inventory system—tracking batches, shelf life, and storage conditions to boost traceability and cut waste. Semi-finished products, post-preliminary quality checks, are stored per strict industry standards: labeled with progress/inspection records to avoid cross-contamination and damage. Finished products are sorted into specialized warehouses by type, market, and delivery schedule, streamlining picking and reducing dispatch delays. This standardized process effectively boosts efficiency: cutting redundant steps by 30%, shortening fulfillment cycles by 20%, and minimizing inventory/shipment errors.

Customized Solutions & After-Sales Support

Tailored to the distinct demands of industries like petrochemicals, new energy, and metallurgy, WYE provides personalized industrial fluid control solutions—covering pre-project demand assessment, customized valve design (matching specific working conditions like pressure or medium type), and on-site technical consultation to align with clients’ operational scenarios. Additionally, we offer comprehensive after-sales support: including on-site installation guidance, regular equipment maintenance inspections, and 24/7 responsive fault troubleshooting, which ensures the stable operation of clients’ systems and strengthens long-term cooperative partnerships.

Our Services

Our company is a one-stop solution for all valve-related needs, offering customization to tailor valves to unique specifications, professional installation & commissioning for seamless integration and optimal performance, maintenance & repair to keep valves in top condition and extend their lifespan, and technical support & consultation for expert advice on selection, optimization, and troubleshooting throughout every project stage.

Our Products

EXHIBITION & PROJECTS

COOPERATIVE PARTNER

Valve Solutions That Transform Your Operations

Our valves offer superior durability, precise control, and tailored solutions for your industrial, commercial, or residential needs. Don’t miss the opportunity to get reliable valve products and expert support.