Diaphragm valves are a type of control valve that employ a flexible diaphragm to regulate the flow of fluids. This diaphragm acts as a barrier to control the passage of liquids, making diaphragm valves particularly useful in applications that require a high degree of sealing and precise flow control. They are commonly used in industries such as chemical processing, water treatment, and biopharmaceuticals due to their ability to prevent contamination and leakage, making them a reliable choice for critical fluid-handling tasks.

Key features and benefits of Diaphragm Valves

Key Features

Diaphragm valves provide exceptional sealing properties, ensuring minimal to no leakage, making them ideal for applications where fluid containment and purity are critical.

Key Features

They offer precise control over the flow of fluids, allowing for accurate adjustment of flow rates, making them suitable for various industrial processes.

Key Features

Diaphragm valves are adaptable to a wide range of applications, including corrosive and abrasive media, high-purity processes, and hygienic industries like pharmaceuticals and food processing.

Key Features

These valves have a simple design with minimal moving parts, making maintenance straightforward and cost-effective, reducing downtime.

Key Features

Diaphragm valves are compatible with a wide range of chemical substances, making them suitable for handling aggressive or corrosive fluids.

Key Features

They are commonly used in industries where hygiene and sterility are paramount, such as in the biopharmaceutical and food industries, as the diaphragm provides an effective barrier to prevent contamination.

The AV-5852 is a precision-engineered fluid control device designed for applications where a tight seal and precise flow control are essential. Its 'Weir' style design allows for effective throttling and control of fluids, while the absence of a lining makes it suitable for applications involving a wide range of non-corrosive to mildly corrosive media. The Screwed BSPP connection ensures easy installation in systems that follow this threading standard, making it a versatile choice for various industrial processes where accurate and reliable flow regulation is required.

Size Range:	DN15-DN50 (1/2" to 2")
Temperature Range:	-10°C to 120°C
Pressure Rating:	PN16
Applications:
Body Materials:	Ductile Iron Body & Bonnet, EPDM Diaphragm
End Connections:	Screwed BSPP

The AV-5861 is a specific type of diaphragm valve designed with a weir-like structure in the flow path, which helps control the flow of fluids. This particular valve is unlined, meaning it does not have an additional lining material on its wetted surfaces, making it suitable for applications where the fluid can come into direct contact with the valve body material. The "Flanged PN16" designation indicates that it is designed to be connected using flanges with a pressure rating of PN16, which is a European standard for pressure ratings. This type of diaphragm valve is versatile and can be used in various industrial applications where precise flow control, resistance to corrosion, and direct contact with the fluid are important considerations.

Size Range:	DN50-150 (1" to 6")
Temperature Range:	-10°C to 120°C
Pressure Rating:	PN16 (1? to 2?), PN10 (2½” to 6?)
Applications:
Body Materials:	Ductile Iron Body & Bonnet, EPDM Diaphragm
End Connection:	Flanged PN16

Diaphragm valves are important because they offer a clean, reliable, and corrosion-resistant solution for controlling fluid flow—particularly in applications where hygiene, chemical resistance, or containment is critical. Their design eliminates contact between the fluid and moving parts, reducing the risk of contamination, wear, and leakage, which is especially vital in industries like pharmaceuticals, food processing, and water treatment.

The flexible diaphragm provides a tight seal even with aggressive or particulate-filled media, making these valves ideal for handling slurries, corrosive chemicals, or sterile fluids. Their low-maintenance operation, smooth flow path, and ease of cleaning contribute to process efficiency, safety, and long-term reliability. For systems requiring both dependable shut-off and cleanliness, diaphragm valves are an essential component.

Diaphragm valves are widely used in industries where cleanliness, corrosion resistance, and precise flow control are essential. In pharmaceutical and biotech facilities, they’re used for sterile processing, CIP (clean-in-place) systems, and water-for-injection lines due to their smooth internal surfaces and contamination-free design. In the food and beverage industry, they manage the flow of ingredients, cleaning agents, and process water while maintaining hygienic standards.

They’re also common in chemical processing plants, where aggressive or abrasive fluids require a valve that can handle corrosive conditions without leaking or degrading. In water treatment and filtration systems, diaphragm valves control dosing chemicals and flow paths with high accuracy. You’ll also find them in semiconductor manufacturing, pulp and paper, and laboratories where media purity and precision are critical.

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A diaphragm valve is a type of valve that uses a flexible diaphragm to control the flow of fluids.

Diaphragm valves are commonly used in industries like chemical processing, pharmaceuticals, water treatment, and food and beverage production.

The main advantage is their excellent sealing properties, which prevent leakage and contamination.

Yes, they are often used for handling corrosive and abrasive media due to their chemical resistance.

Maintenance is relatively simple, involving diaphragm replacement and routine inspections for wear or damage.

Weir type valves have a weir-like obstruction in the flow path, while straightway type valves have a straight flow path. The choice depends on the specific application.

Yes, they are commonly used in the pharmaceutical and food industries for their hygienic design.

Yes, they provide accurate and precise control over flow rates, making them suitable for various industrial processes.

Unlined valves are suitable for applications where the fluid can come into direct contact with the valve body material.

Yes, Actuation Valve offers sustainable spares and replacement parts for ongoing maintenance schedules.

Yes, most Diaphragm Valves are reversible, allowing for bidirectional flow control without affecting their performance or sealing.

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