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Q Can actuator colors be customized?
A Yes. We match RAL/Pantone codes and add laser-etched logos.
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Q Are pneumatic valves suitable for outdoor installations?
A Yes. They’re weatherproof but must operate within -20°C to 80°C (extended ranges available on request).
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Q How long do your pneumatic actuators last?
A Rigorously tested for 1 million cycles (ISO 5211 standard) with certification provided.
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Q Do you provide post-sales engineering support?
A Absolutely. Our engineers are available 24/7 via email/WhatsApp for troubleshooting.
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Q Can you produce valves from my custom drawings?
A Yes. Our CNC machines handle complex geometries. Submit CAD/SolidWorks files for a feasibility review.
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Q Which diaphragm materials work for oil media?
A Recommended: Nitrile (NBR), FKM, PTFE, or EPDM—selected based on oil type and temperature.
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Q What are your main products?
A Since the 2000s, we’ve specialized in:
• Solenoid valves
• Electric/pneumatic actuated valves
• Lever-operated valves (gate, globe, check valves)
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Q What voltages do your electric actuators support?
A Standard options: DC24V, AC24V, AC110V, AC220V.
Customizable: AC380V (high-torque) and DC12V (small actuators).
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Q What is the warranty period?
A We offer a 12-month global warranty.
If defects are found after delivery:
Send photos/videos of the issue.
We confirm responsibility within 8 working hours.
Free replacements or refunds provided.
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Q Can I get samples? How?
A Yes, samples are available for purchase. Please provide your sample requirements (material, pressure rating, connection type), and we’ll send a quote within 24 hours.
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Q Customization Options
A We understand that every business has unique needs. That’s why we offer customization options to tailor our products to your specific requirements. Whether it’s size, material, or functionality, we can accommodate your needs to ensure the perfect solution for your application.
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Q Strong Reputation
A With years of experience and a solid reputation in the industry, we have earned the trust and loyalty of customers worldwide. Our track record speaks for itself, showcasing our commitment to excellence and customer satisfaction.
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Q Exceptional Service
A Customer satisfaction is our top priority. Our dedicated team provides personalized and prompt service, assisting you every step of the way, from product selection to after-sales support.
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Q Superior Quality
A We are committed to delivering products of the highest quality standards. Each of our valves undergoes rigorous testing to ensure durability, reliability, and optimal performance in various industrial applications.
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Q Competitive Pricing
A We offer competitive pricing for our products without compromising on quality. Our cost-effective solutions ensure that you get the best value for your investment.
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Q How can I troubleshoot common valve issues like leaks or stuck valves?
A Common valve issues may result from factors like improper installation, wear, or debris accumulation. COVNA offers troubleshooting guides and technical support to diagnose and resolve these issues effectively.
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Q What maintenance procedures are required to ensure optimal valve performance?
A Regular maintenance, including inspection, lubrication, and seal replacement, is essential to prevent leaks, corrosion, and premature wear. COVNA provides comprehensive maintenance guidelines and support services to keep valves operating at peak performance.
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Q What advantages do automated valves offer over manual valves?
A Automated valves, such as pneumatic or electric valves, offer improved precision, reliability, and control. They also enable remote operation, enhanced safety features, and integration with control systems for automated processes.
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Q How do I select the right valve for my application?
A Choosing the right valve involves considering factors such as the type of fluid, pressure, temperature, flow rate, and environmental conditions. Consulting with valve experts like COVNA can help determine the most suitable valve for your specific needs.
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Q What are the main types of industrial valves, and what are their typical applications?
A Industrial valves come in various types, including gate valves, globe valves, ball valves, butterfly valves, and check valves. They are used in industries such as oil and gas, water treatment, chemical processing, and power generation, each serving specific functions like isolation, regulation, or control of fluid flow.
