The product was last updated on 28/10/2025 at 09:08 am
Introducing the EMPB-OSW Pneumatic Butterfly Valve
The market for pneumatic butterfly valves offers numerous options, but the EMPB-OSW pneumatic butterfly valve from EM-Flow stands out. It’s a perfect blend of high-quality materials and advanced manufacturing technology from Taiwan. Designed to handle the toughest challenges, from corrosive chemical environments to high temperatures, this valve ensures stable operation and a long service life.
EMPB-OSW Pneumatic Butterfly Valve
Key Features:
Compact and Robust Design: The minimalist structure makes installation and transportation easy.
Superior Corrosion Resistance: The valve body is made of high-quality stainless steel (Inox 304 or Inox 316), combined with durable sealing materials like PTFE, EPDM, and NBR. This ensures the valve operates reliably in harsh environments.
Dependable Control: The valve accurately and stably controls flow thanks to its pneumatic actuator.
Convenient Connection Style: It uses the common wafer connection style, which makes installation on pipelines quick and simple.
With these advantages, the EM-Flow EMPB-OSW pneumatic butterfly valve is widely trusted in various industries, including chemical processing, petrochemicals, water treatment, HVAC systems, and more.
Superior Structure and Materials: The Key to Durability
The reliability of the EMPB-OSW valve comes from its robust construction and carefully selected materials. This is a crucial point that all engineers and contractors pay attention to.
Stainless Steel Body and Disc: Comprehensive Protection
Both the body and disc of the EMPB-OSW are made from high-grade stainless steel. Depending on system requirements, the material can be either Inox 304 or Inox 316.
Inox 304: A common type of stainless steel with good corrosion resistance in many environments. It contains 18% Chromium and 8% Nickel, providing effective durability and rust resistance. Inox 304 is suitable for applications in the food, beverage, and general water treatment industries.
Inox 316: Considered an “upgraded version” of Inox 304. In addition to Chromium and Nickel, Inox 316 also contains 2-3% Molybdenum. This component gives the material superior corrosion resistance, especially against localized pitting caused by chloride compounds in saltwater, diluted acids, or chemicals.
By using stainless steel, the EMPB-OSW valve not only ensures high mechanical durability but also operates effectively in harsh environments where valves made from cast iron or regular steel cannot.
Valve body and disc are made of 304 stainless steel
PTFE (Teflon) Seal: The Perfect Heat and Chemical Resistant Layer
The sealing gasket (seat) is the part that directly contacts the fluid and is crucial for the valve’s sealing ability. While many butterfly valves use rubber seals (EPDM, NBR), the EMPB-OSW is equipped with a PTFE seal. This is a significant advantage that makes a major difference:
Excellent Chemical Resistance: PTFE (Polytetrafluoroethylene) is a polymer that is almost chemically inert. It does not react with most acids, bases, solvents, and strong chemicals, allowing the valve to operate stably in complex chemical systems.
High Temperature Resistance: The PTFE seal can withstand working temperatures up to 260°C, which is much higher than rubber seals (which typically handle temperatures below 120°C). This allows the EMPB-OSW to operate effectively in hot steam or hot oil systems.
High Durability and Long Lifespan: The PTFE seal does not age, become brittle, or shrink over time like rubber, reducing maintenance and replacement costs.
Non-Stick Surface: The surface of PTFE is extremely smooth and non-stick. This characteristic makes the EMPB-OSW valve ideal for industries requiring food and pharmaceutical safety standards.
The combination of a stainless steel body and disc with a PTFE seal creates a true “warrior” that can withstand all harsh conditions, from corrosion and high temperatures to high pressure.
Applications of the EM-Flow EMPB-OSW Butterfly Valve
With its outstanding material and technological advantages, the EMPB-OSW butterfly valve is widely used in many industrial fields, providing high efficiency and absolute reliability:
Chemical Industry: Controls the flow of acids, bases, and solvents. The pneumatic butterfly valve allows for quick shut-off, ensuring the safety of the entire system.
Food and Beverage Industry: Suitable for systems processing milk, beer, wine, and beverages, thanks to its non-toxic, non-stick, and easy-to-clean stainless steel and PTFE materials, which meet food safety standards.
Pharmaceutical Industry: Used in drug manufacturing processes that require absolute precision and cleanliness.
Water and Wastewater Treatment: The valve is resistant to corrosion from chemicals in wastewater, helping the system operate reliably.
Pneumatic and Hot Steam Systems: The heat resistance of the PTFE seal allows the valve to perform well in hot steam and high-temperature pneumatic pipelines.
Guide to Selecting and Installing the EM-Flow Pneumatic Butterfly Valve
To maximize the effectiveness of the EMPB-OSW valve, correct selection and installation are crucial.
Choosing the Right Valve
When selecting a valve, you should consider the following factors:
Size: Choose a valve size that corresponds to the pipeline (e.g., DN50, DN100).
Working Pressure: Ensure the valve’s pressure rating is greater than or equal to the system’s maximum pressure.
Working Temperature: Check the maximum fluid temperature to ensure the PTFE seal will operate stably.
Operating Environment: Clearly identify the nature of the fluid (chemicals, food, water, etc.) to choose the correct type of stainless steel (304 or 316).
Installation and Maintenance
The EMPB-OSW valve typically uses a wafer-style connection, which makes installation quick and easy.
Installation: Ensure the valve is installed in the correct direction and aligned with the pipeline to prevent leaks.
Maintenance: Although highly durable, periodic inspection is necessary. You should check the sealing gasket and the pneumatic actuator to ensure the valve is always operating at its best.
Comparison of the EM-Flow Pneumatic Butterfly Valve with Others
For a more comprehensive view, let’s compare the EMPB-OSW with some main competitors on the market:
Compared to Electric Butterfly Valves: Electric valves can provide more precise linear control but have a much slower opening/closing time (8-15 seconds). The EMPB-OSW pneumatic butterfly valve excels in speed and safety in explosive environments, while the initial investment cost is lower.
Compared to Other Brands’ Valves: While there are many famous brands like Bray, Worcester Controls, Spirax Sarco, and Flowserve, EM-Flow from Taiwan affirms its position with high-quality products, competitive pricing, and suitability for many industrial applications in Vietnam.
Frequently Asked Questions (FAQ)
Is the EMPB-OSW stainless steel pneumatic butterfly valve suitable for strong acid environments?
Yes, thanks to its stainless steel construction (especially Inox 316) and PTFE seal, the valve has superior corrosion resistance, making it very suitable for diluted acids and other corrosive chemicals.
How long is the warranty for the EM-Flow butterfly valve?
Typically, EM-Flow products are covered by a 12-18 month warranty, depending on the supplier, ensuring customer rights.
How can I distinguish a genuine EM-Flow butterfly valve from a fake?
To ensure you purchase a genuine product, you should go to reputable dealers and distributors of EM-Flow in Vietnam. Genuine products usually have clear labels, serial numbers, and full CO/CQ documentation.
Is the installation cost for a pneumatic butterfly valve high?
The installation cost for a pneumatic butterfly valve is generally lower than an electric valve due to its simpler structure. However, the cost of the pneumatic system (compressor, piping, filter, etc.) should be considered.
Conclusion: The EMPB-OSW pneumatic butterfly valve from EM-Flow is more than just a product; it’s a comprehensive solution for industrial automation systems. With its perfect combination of high-grade stainless steel materials, corrosion-resistant PTFE seals, and a high-speed pneumatic actuator, the EMPB-OSW valve delivers superior performance, incredible durability, and absolute safety.
VIVA INDUSTRIAL EQUIPMENT AND ENGINEERING., JSC
Apartment 20 – Building B – C30 Army Group Supplies Department, Ha Dinh Ward, Hanoi City, Vietnam .
We’ve been using the EMPB-OSW pneumatic butterfly valve for our chemical processing line for the past six months, and it has been a game-changer. The actuation is incredibly responsive, and the stainless steel construction has held up perfectly against our corrosive media. We’ve experienced zero leaks or operational failures so far, which has significantly reduced our downtime. The installation was straightforward, and the valve’s seal integrity is impressive. Highly recommend for anyone needing a reliable and robust valve for demanding applications.”
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Ms. Phuong –
We’ve been using the EMPB-OSW pneumatic butterfly valve for our chemical processing line for the past six months, and it has been a game-changer. The actuation is incredibly responsive, and the stainless steel construction has held up perfectly against our corrosive media. We’ve experienced zero leaks or operational failures so far, which has significantly reduced our downtime. The installation was straightforward, and the valve’s seal integrity is impressive. Highly recommend for anyone needing a reliable and robust valve for demanding applications.”