Product Description
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Flanged Diaphragm Valve Product Details
1. Overview
A flanged diaphragm valve is a type of shut - off valve that uses a flexible diaphragm as its closing element. It separates the interior cavity of the valve body from the cavity of the valve cover. This design makes it suitable for applications where preventing contamination and ensuring tight sealing are crucial.
2. Structure
- Valve Body: Usually made of materials like cast iron, cast steel, or stainless steel. It can be lined with corrosion - resistant materials such as rubber or PTFE (polytetrafluoroethylene) to enhance its resistance to corrosive media. The body has flanges for easy connection to pipelines, which conform to relevant flange standards (e.g., ANSI, DIN).
- Diaphragm: This is a key component, typically made from elastomeric materials like rubber (e.g., EPDM - Ethylene Propylene Diene Monomer), neoprene, or PTFE - coated rubber. The diaphragm's flexibility enables it to move up and down, controlling the flow of fluid through the valve.
- Valve Cover: Houses the operating mechanism and is connected to the valve body. It provides a protective enclosure for the internal components and ensures a proper seal with the diaphragm.
- Operating Mechanism: Can be manual (using a handwheel for operation), pneumatic (powered by compressed air), or electric. In a manual flanged diaphragm valve, turning the handwheel moves the compression member connected to the diaphragm, causing the diaphragm to either lift off the valve seat (opening the valve) or press against it (closing the valve).
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3. Working Principle
When the operating mechanism is actuated (for example, turning a handwheel in a manual valve), it causes the compression member attached to the diaphragm to move. When the compression member moves upward, the diaphragm lifts, creating an unobstructed path for the fluid to flow through the valve. Conversely, when the compression member moves downward, the diaphragm is pressed against the valve seat, blocking the flow path and shutting off the fluid.
4. Advantages
- Sealing Performance: The diaphragm provides an excellent seal, preventing leakage both internally (between the valve body and cover) and externally. This makes it suitable for handling fluids that are corrosive, toxic, or require a high - level of purity, such as in pharmaceutical and food processing industries.
- Corrosion Resistance: With the option of lining the valve body and using corrosion - resistant diaphragm materials, flanged diaphragm valves can handle a wide range of corrosive media, including acids, alkalis, and chemicals.
- Low Maintenance: The simple structure with fewer moving parts reduces the likelihood of component failure. Changing the diaphragm can often be done on - site without complex disassembly, minimizing downtime.
- Hygienic Design: In applications where hygiene is critical, such as food and beverage production and pharmaceutical manufacturing, the design of the flanged diaphragm valve, which keeps the operating mechanism separate from the fluid path, helps maintain product purity.
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5. Applications
- Food and Beverage Industry: Used for handling ingredients, products, and cleaning fluids. For example, in dairy plants for milk processing, breweries for beer production, and food factories for processing various food products.
- Pharmaceutical Industry: Ideal for handling pharmaceutical raw materials, products, and cleaning - in - place (CIP) fluids. It helps meet strict hygiene and contamination - control requirements.
- Chemical Industry: Can be used to control the flow of corrosive chemicals, acids, alkalis, and solvents in chemical processing plants.
- Water Treatment: Applied in water treatment facilities for handling raw water, treated water, and chemicals used in the treatment process, such as in desalination plants and sewage treatment plants.
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6. Technical Parameters
- Pressure Rating: Usually specified in units like bar or psi (pounds per square inch). For example, a common pressure rating might be 16 bar (equivalent to approximately 232 psi), but it can vary depending on the valve's design and application requirements.
- Temperature Range: Depends on the materials used for the diaphragm and valve body lining. Generally, it can operate in a range from around - 10°C to 90°C, but high - performance materials can extend this range. For instance, PTFE - lined valves with suitable diaphragms can handle higher temperatures up to about 150°C in some cases.
- Flow Capacity: Measured in terms of flow coefficient (Cv or Kv). This indicates the valve's ability to pass fluid and is related to the valve's size, internal geometry, and the properties of the fluid. Larger - sized flanged diaphragm valves typically have higher flow capacities.
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7. Installation and Maintenance
- Installation: Ensure that the flanges are properly aligned and tightened during installation to prevent leakage. The valve should be installed in a location that allows for easy access for operation and maintenance. When connecting to pipelines, use appropriate gaskets that are compatible with the fluid and the valve's operating conditions.
- Maintenance: Regularly inspect the diaphragm for signs of wear, damage, or degradation. Check for any leaks around the flanges and the valve body - cover joint. Lubricate the operating mechanism (if applicable) according to the manufacturer's recommendations to ensure smooth operation. When replacing the diaphragm, follow the manufacturer's instructions carefully to ensure proper installation and sealing.
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Detailed Photos
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Product Parameters
Certifications
Packaging & Shipping
Company Profile
Our company mainly adopts standards such as Chinese national standards, German standards, British standards, American standards, Japanese standards, and Australian standards. We produce products with a nominal diameter ranging from DN15 to DN3000, a pressure class from 0.60 Mpa to 6.4 Mpa, and a working temperature from -20°C to 150°C. The materials mainly include gray cast iron, ductile iron, cast steel, stainless steel, duplex steel, etc. Our products mainly include soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, diaphragm valves, etc.
We always strive for excellence and keep improving. In recent years, the company has continuously enhanced its management level, we meet the needs of customers, We obtained the ISO9001 Quality Management System Certification and the British WARS Drinking Water Certification. our products are exported to countries and regions in Europe, Asia, Africa and other places, and we have won the trust and praise of a large number of customers. Adhering to the quality policy and maintaining the quality objectives, the people of Auswell valve Co., Ltd are willing to join hands and make full cooperation with our colleagues in the valve industry. Let's work together to make Chinese manufacturing go global.
Tianjin Auswell Valve Co., Ltd. It is located in a famous historical town in China, Which" thrived due to its military history and gained fame because of its rice".Industrial Park,Xiaozhan Town,Jinnan District,Tianjin.The company has comprehensive production capabilities such as product design, mold manufacturing, machining, rubber smelting, epoxy spraying, valve assembly, and testing.
The advanced processing equipment and exquisite craftsmanship ensure that each product meets national or international standard requirements. We work with the craftsmanship spirit, Our company pursues excellence in our products and provides customers with high-quality products.
Our company mainly adopts standards such as Chinese national standards, German standards, British standards, American standards, Japanese standards, and Australian standards. We produce products with a nominal diameter ranging from DN15 to DN3000, a pressure class from 0.60 Mpa to 6.4 Mpa, and a working temperature from -20°C to 150°C. The materials mainly include gray cast iron, ductile iron, cast steel, stainless steel, duplex steel, etc. Our products mainly include soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, diaphragm valves, etc.
Our company mainly adopts standards such as Chinese national standards, German standards, British standards, American standards, Japanese standards, and Australian standards. We produce products with a nominal diameter ranging from DN15 to DN3000, a pressure class from 0.60 Mpa to 6.4 Mpa, and a working temperature from -20°C to 150°C. The materials mainly include gray cast iron, ductile iron, cast steel, stainless steel, duplex steel, etc. Our products mainly include soft-sealed butterfly valves, soft-sealed gate valves, check valves, filters, ball valves, globe valves, balance valves, diaphragm valves, etc.
We always strive for excellence and keep improving. In recent years, the company has continuously enhanced its management level, we meet the needs of customers, We obtained the ISO9001 Quality Management System Certification and the British WARS Drinking Water Certification. our products are exported to countries and regions in Europe, Asia, Africa and other places, and we have won the trust and praise of a large number of customers. Adhering to the quality policy and maintaining the quality objectives, the people of Auswell valve Co., Ltd are willing to join hands and make full cooperation with our colleagues in the valve industry. Let's work together to make Chinese manufacturing go global.
FAQ
1) Q: Are you a manufacturer or trading company?
A: Hoswell Valve is a professional valve manufacturer with experienced R&D team.
2) Q: Do you have any agent or representative abroad?
A: Yes, we have agents in some countries, they can offer local service for you.
3) Q: What kinds of valve can you supply?
A: We can supply butterfly valve, ball valve, check valve and so on.
4) Q: Do you have any certificate for the valves?
A: Yes, we have CE, BV, ATEX, TS and so on.
5) Q: What's the delivery time?
A: If all the parts of the valve are ready in stock, the valves can be delivered within 7~10 days.
6) Q: What are the countries or regions you supply valves?
A: Hoswell valves have been supplied to USA, Europe, Australia, Singapore, South Africa and so on.
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