pneumatic actuated valves

Pneumatic Brake Valves and Air Valves: Safety Essentials

Beyond primary valve bodies, pneumatic systems rely on accessory items like pneumatic valve springs, custom spring compressors, and manual control valves. Springs ensure reliable spool centering and fail-safe return in directional valves, while specialized spring compressors facilitate maintenance and assembly tasks. Manual control valves offer local override capabilities, enabling technicians to isolate, bleed, or pilot pneumatic circuits during commissioning and troubleshooting, ensuring operational flexibility and system resilience.
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High-Torque Pneumatic Actuator Valve, 24V DC Solenoid

High-Torque Pneumatic Actuator Valve, 24V DC Solenoid

A 3/2-way pneumatic solenoid valve with three ports and two positions switches airflow in under 10 ms. Nylon composite body and FKM seals withstand 10 bar and –10 °C to +60 °C. The 24 V DC coil draws 5 W via a DIN connector. Precision spool limits leakage to 0.2%, while a spring return ensures instant reset. Rated IP65 and over one million cycles durability for fast packaging and robotics.

Electropneumatic Control Valve with 110V AC Actuator

Electropneumatic Control Valve with 110V AC Actuator

Compact pneumatic control valve features a manual override knob for testing or emergency operation. Brass body and 1″ G ports handle 0–8 bar. Quick-connect fittings allow tool-free installation. Ergonomic knob and flow scale provide ±3% repeatability. PTFE-packed spindle and electro-polished passages minimize wear and pressure drop. Snap-on mounting clip and captive bonnet screw enable easy maintenance in pneumatic panels and calibration rigs.

Pneumatic Valve Spring Compressor Maintenance Tool

Pneumatic Valve Spring Compressor Maintenance Tool

Electropneumatic control valve uses a 110 V AC solenoid coil and precision pneumatic spool to modulate airflow from 0 to 12 bar. Its PVC body and PTFE seals resist chemicals. The 6 W coil connects via a DIN connector. Provides leak-tight shutoff under 1 bar backpressure with Cv 0.8. Ideal for process automation, irrigation zones, and air distribution panels.

One-Way Pneumatic Exhaust Valve for Pressure Relief

One-Way Pneumatic Exhaust Valve for Pressure Relief

One-way pneumatic exhaust valve vents air through a ¼″ port at up to 8 bar in a single direction. An anodized aluminum body houses a poppet and spring for automatic reset upon pressure reversal. Rated –10 °C to +60 °C. Its compact footprint suits safety interlocks, emergency stops, and rapid pneumatic venting in machine guarding systems.

We Have The Best Solutions for Your Business

COVNA GROUP CO., LTD is a world-leading valve manufacturer which specialized in solenoid valves, pneumatic valves, and electric valves for pipeline fluid control. COVNA originated from German technology, has its own R&D, design, production, sales team, and aims to be the global automation application service provider.

COVNA production range includes solenoid valves, pneumatic valves, electric valves, gate valves, globe valves, butterfly valves, control valves, safety valves, and various special valves. COVNA products are widely used in Water & Waste water treatment, Automation, Petroleum, Chemical, Electric power, Metallurgy, Mining, Paper-making, Pharmaceutical Industries, etc.

COVNA team make a rapid response to customer's requirements, provide professional product selection guidance and reliable valve application solutions.So far, COVNA has achieved ISO 9001 Quality Management System Certification, CE Certification, RoHS Certification.

Why Choose COVNA

Global Expertise

COVNA delivers valve solutions to customers in over 120 countries, combining global market expertise with localized support to meet diverse industry needs and ensure reliable performance worldwide.

Advanced Technology

Backed by German technology, COVNA specializes in solenoid, pneumatic, and electric valves, providing innovative fluid control solutions designed for precision, efficiency, and long-lasting durability.

Strong Manufacturing

With a modern factory, CNC machining, and strict quality testing, COVNA ensures every valve meets international standards, delivering consistent reliability for water, oil, gas, and automation industries.

Trusted Brand

Recognized as a preferred supplier by global partners, COVNA has built long-term trust through consistent product quality, professional technical support, and comprehensive after-sales services.

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FREQUENTLY ASKED QUESTION

Do You Have Any Question?

A pneumatic valve is an actuator that uses compressed air to control the flow or direction of a fluid. Common types include solenoid valves, directional valves, flow control valves, check valves, pressure regulating valves, and actuators such as ball valves and butterfly valves.

First, determine the media type, rated pressure, temperature range, and required port diameter. Then, consider the coil voltage, response speed, and sealing material. Finally, consider the installation method and certification requirements.

A three-way valve has three ports and two channel states and is primarily used for one-way control or exhaust. A five-way valve has five ports and two states and can switch double-acting cylinders in both forward and reverse directions. A three-way valve is used for quick exhaust or simple switching, while a five-way valve is used for complex circuits or double-acting actuators.

Before installation, clean the piping and install a filter-pressure regulating unit. The interface between the actuator and the valve body should be centered, and bolts should be tightened evenly and symmetrically to avoid uneven loading. During commissioning, first test the air flow with no load, then gradually increase the pressure to the rated value. Check the travel, sealing, and return reliability.

Leakage: Check seals for wear and threads for tightness. Seizure: Clean the valve core, lubricate the guide, or replace the filter element. Coil inactivity: Measure voltage and check coil resistance. Slow actuation: Clean the air source, adjust the speed regulating valve, or replace the spring.

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