The product was last updated on 28/10/2025 at 09:09 am
What is the EMPB-OCW pneumatic butterfly valve?
The EMPB-OCW Pneumatic Butterfly Valve from the Em-flow brand, with the renowned “Made in Taiwan” quality standard, is precisely the solution that engineers and project managers are seeking. This is not just a mechanical device, but a smart investment for the long-term stability and efficiency of the entire system.
To fully understand the value of this product, we first need to define it accurately. The EMPB-OCW Pneumatic Butterfly Valve is an industrial valve device composed of two main parts:
Butterfly Valve Body: A type of valve with a quick open/close mechanism, consisting of a metal disc (the “butterfly”) that rotates on a shaft perpendicular to the flow. When the disc is parallel to the flow, the valve is fully open. When the disc rotates 90 degrees, it blocks the flow, putting the valve in a fully closed state.
Pneumatic Actuator: This is the “brain” and “muscle” of the valve. It uses energy from compressed air to create rotational motion, transmitting force to the valve stem and automatically controlling the opening/closing of the butterfly disc.
The combination of a compact butterfly valve body and a powerful pneumatic actuator creates Em-flow’s EMPB-OCW model – a complete device, ready for automating flow control (of liquids, gases, steam, powders, etc.) in pipelines. Its main function is to Open/Close (On/Off) the flow quickly, precisely, and remotely via a solenoid valve that directs the air supply.
The EMPB-OCW pneumatic butterfly valve – a complete device, ready for flow control automation
Why choose an Em-flow pneumatic butterfly valve from Taiwan?
Among countless options from around the world, why are the Em-flow brand and its Taiwanese origin a valuable highlight? It’s because it converges three golden factors: Superior Quality, Smart Design, and Durable Materials.
“Quality is not an act, it is a habit.” – Aristotle
This saying perfectly aligns with the industrial production philosophy in Taiwan.
The “Made in Taiwan” quality standard
When it comes to “Made in Taiwan” industrial products, engineers always have a certain level of trust. This is not a random preference but the result of a long and serious technological development process.
Modern Technology: Taiwan is one of the Asian Tigers, leading in the application of automation and precision engineering. Em-flow valve manufacturing plants are equipped with modern CNC production lines, ensuring that every detail from the valve body, disc, to the stem has near-absolute precision.
Strict Quality Control (QC/QA): Before being shipped, each EMPB-OCW valve product must undergo numerous rigorous inspection stages: checking raw materials, pressure testing, leakage testing, open/close cycle testing, etc. This helps to eliminate nearly 100% of defective products.
The “Sweet Spot”: Compared to low-cost, unstable quality products from some manufacturers in China, Em-flow valves excel in durability and stability. Compared to ultra-premium products from Japan (Kitz, SMC) or Germany (Festo, Samson) which have very high prices, Em-flow offers a solution with comparable quality at only a fraction of the investment cost. This is the “sweet spot” in terms of performance/price.
EMPB-OCW model design optimized for performance
Not only inheriting general quality, the EMPB-OCW model itself possesses outstanding design advantages:
Compact, Easy to Install: The valve is designed in a Wafer style, meaning the thin valve body is sandwiched between two pipe flanges. This design saves maximum space, reduces the overall weight of the system, and simplifies the installation and maintenance process.
Powerful, Decisive Operation: The Em-flow pneumatic actuator is made of high-grade aluminum alloy with an anti-corrosion epoxy powder coating. Inside is a rack-and-pinion system that provides high torque, ensuring the valve opens/closes decisively even when working with high pressure. The time for one open or close cycle is only 1-2 seconds, perfectly meeting applications that require rapid response times.
Safe and Reliable: The actuator meets the IP67 dustproof/waterproof standard, allowing it to operate safely in humid, dusty industrial environments.
The EMPB-OCW model possesses outstanding design advantages
Diverse materials – meeting every harsh environment
One of the most important factors determining the lifespan and suitability of a valve is the material. The Em-flow EMPB-OCW offers many options to be “tailor-made” to the specific needs of each application:
Valve Body:
Cast Iron: An economical and popular choice for clean water systems, treated wastewater, compressed air, and fire protection systems.
Stainless Steel 304/316: Mandatory for environments requiring food safety and hygiene, or for highly corrosive chemical environments.
Valve Disc (Butterfly):
Stainless Steel 304/316: This is almost the standard, ensuring resistance to rust and corrosion, and providing a smooth surface to reduce friction with the flow.
Sealing Gasket (Seat):
EPDM: Very common for water applications, withstands temperatures up to ~120°C.
Teflon (PTFE): The “king” of gaskets, excellent chemical resistance, withstands high temperatures (up to 180°C), suitable for the chemical, food, and pharmaceutical industries.
NBR (Nitrile): An excellent choice for gasoline, oil, and fuel systems.
Choosing the right material will help the valve operate durably for many times longer. Need technical advice? Contact our team of experts now.
Detailed technical specifications table for the EMPB-OCW pneumatic butterfly valve
Below is a detailed technical specifications table to help engineers and purchasing departments easily look up and compare with project requirements.
Detailed Technical Specifications Table for EMPB-OCW Pneumatic Butterfly Valve
Dưới đây là bảng thông số kỹ thuật chi tiết giúp các kỹ sư và phòng mua hàng dễ dàng tra cứu và đối chiếu với yêu cầu dự án.
Detailed technical specifications table for EMPB-OCW pneumatic butterfly valve
Practical applications of the Em-flow pneumatic butterfly valve
Theory and specifications are important, but the true value of a product lies in its ability to solve real-world problems. The Em-flow EMPB-OCW valve has been proving its superior effectiveness in a wide range of industries:
Water and Wastewater Treatment Plants: The valve is used to open/close pipelines for raw water, clean water, wastewater, sludge, etc. Its corrosion resistance and automatic operation help the system run stably and reduce manual labor.
Food and Beverage Plants (Beer, Soft Drinks, Milk): With options for stainless steel body/disc and hygienic standard Teflon (PTFE) gaskets, the Em-flow valve is an ideal choice for controlling the flow of raw materials and for CIP (Clean-In-Place) systems, ensuring absolute safety for the final product.
Textile Dyeing and Plating Industries: Highly corrosive chemical environments require equipment with special durability. The stainless steel valve and Teflon gasket options allow the EMPB-OCW to operate durably with various acids, bases, and solvents.
Cement and Mining Plants: The valve is used in cooling water systems, compressed air systems, and dust treatment, where equipment must be “robust” and operate reliably in harsh environments.
Fire Protection (PCCC) and HVAC Systems: The fast and precise opening/closing capability of the pneumatic valve is a critical factor in fire protection and central air conditioning systems.
Other famous pneumatic valve brands on the market
To give you a comprehensive overview and help you make the wisest choice, we would also like to review some other reputable pneumatic-controlled butterfly valve brands on the market:
Same Segment from Taiwan/South Korea:
Geko, Haitima (Taiwan): Direct competitors to Em-flow, with comparable quality and price levels.
KosaPlus, Samwoo (South Korea): Also very popular choices in Vietnam, known for good quality and modern design.
High-end Segment from Japan/Europe:
SMC, Kitz (Japan): Famous for near-absolute durability and top-tier technology, but at a very high price point.
Festo, Samson (Germany): “Giants” in the global automation industry, their products are the standard for applications requiring the highest precision and safety.
This comparison shows that the Em-flow EMPB-OCW is strategically positioned, offering nearly all the performance and reliability of major brands at a much smarter and more accessible investment cost.
Guide to selecting and receiving a quote for the EMPB-OCW butterfly valve
To receive the most accurate quote and the most suitable product, please determine the following basic information before contacting us:
Pipe size (DN)?
What is the fluid medium (Water, chemical, steam, etc.)?
Maximum working temperature and pressure?
What flange standard is being used (JIS, ANSI, DIN)?
Material requirement (Cast Iron or Stainless Steel)?
Quantity needed?
Once you have all the information, don’t hesitate! Connect immediately with our team of experienced engineers. We don’t just sell products; we provide solutions. We will listen to your problem and recommend the most suitable EMPB-OCW valve model, helping you optimize costs and ensure technical efficiency.
How long does the Em-flow EMPB-OCW pneumatic butterfly valve last?
With proper operation and maintenance, the valve body has a very long lifespan, over 5-7 years. Wearable parts like the sealing gasket may need replacement after 2-3 years depending on the fluid and frequency of operation. The pneumatic actuator is designed for millions of open/close cycles.
Is the product in stock in Vietnam? How long is the delivery time?
We always maintain a large inventory of common valve sizes from DN50 to DN300. Delivery time within Hanoi/Ho Chi Minh City is only 2-4 hours. For other provinces, the delivery time is from 1-3 working days.
Can the EMPB-OCW valve be used for regulating flow?
The standard EMPB-OCW model is for ON/OFF operation. However, if you require linear flow control based on the opening angle, we can install an additional Pneumatic Positioner. This accessory will receive a 4-20mA signal and precisely control the valve’s opening angle.
What is the warranty policy for the Em-flow valve?
All Em-flow pneumatic butterfly valve products we distribute come with a 12-month official warranty on a 1-for-1 exchange basis for any manufacturer defects. The product is delivered with full Certificates of Origin (CO) and Quality (CQ).
Conclusion: Choosing an industrial valve is not merely buying a piece of equipment; it’s laying a foundation for the stability of an entire system. The Em-flow brand EMPB-OCW pneumatic butterfly valve not only brings the proven quality of Taiwanese industry but is also an intelligent economic solution, helping your business advance more quickly on the path to automation.
With its optimized design, durable materials, and reliable operational performance, this is a worthy investment for the future. Let us accompany you in building an efficient and sustainable production system.
Contact us today to receive expert advice and the latest industrial butterfly valve price list!
VIVA INDUSTRIAL EQUIPMENT AND ENGINEERING., JSC
Apartment 20 – Building B – C30 Army Group Supplies Department, Ha Dinh Ward, Hanoi City, Vietnam .
A robust and reliable workhorse. We’ve been using the EMPB-OCW valves in our wastewater treatment plant for six months, and they have performed flawlessly. The cast iron body is incredibly durable and the pneumatic actuator provides fast, responsive control. It’s a low-maintenance and highly dependable valve that has significantly improved our system’s efficiency. The team at [SUNWAY VINH PHUC PLANT] was also very helpful with the specifications and delivery.
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Mr. Huy –
A robust and reliable workhorse. We’ve been using the EMPB-OCW valves in our wastewater treatment plant for six months, and they have performed flawlessly. The cast iron body is incredibly durable and the pneumatic actuator provides fast, responsive control. It’s a low-maintenance and highly dependable valve that has significantly improved our system’s efficiency. The team at [SUNWAY VINH PHUC PLANT] was also very helpful with the specifications and delivery.