Double Block and Bleed Butterfly Valve

Product Description

The double-blocking double-discharge ball valve is a valve that incorporates several design features to enhance its functionality. This valve is designed to provide a high level of sealing and safety in various industries and applications.
One of the main design features of this valve is the double-blocking mechanism. This means that the valve provides two layers of blocking to prevent any medium flow in both directions. This feature ensures that there is no leakage or loss of fluid during operation, offering a reliable and efficient sealing performance.
Another important design feature is the double-discharge capability of the valve. This means that the valve allows for the simultaneous discharge of fluid from both the upstream and downstream ends. This feature is particularly useful in situations where there is a need for rapid drainage or for avoiding pressure build-up in the system.
The valve also incorporates a ball as the main sealing element. This ball rotates within the valve body to enable or block the flow of the medium. The ball is designed with precision to ensure a tight sealing, minimizing the chances of leakage. The use of a ball also allows for a quick and easy operation of the valve, as it can be opened or closed with a simple 90-degree rotation.
In addition, the valve is typically equipped with various sealing materials to enhance its performance. These materials are selected based on the specific requirements of the application, considering factors such as the type of medium, temperature, and pressure. The sealing materials work in conjunction with the double-blocking feature to provide a reliable and durable sealing performance.
Overall, the design features of the double-blocking double-discharge ball valve make it a versatile and efficient solution for controlling the flow of fluids in different industrial settings. Its ability to provide double-blocking and double-discharge ensures a high level of sealing and safety, while the use of a ball as the sealing element enables quick and easy operation.

The double-blocking double-discharge ball valve has certain parameters that need to be considered. It is important to understand the specifications before purchasing or using this type of valve.
To begin with, this valve features a double-block design. This means that it has two separate sealing elements that work in tandem to provide a reliable seal. The double-blocking design also ensures that the valve is fully isolated from the pipeline when in the closed position.
The valve also features a double-discharge design. This means that it has two separate outlet ports that allow for the safe and efficient discharge of fluids or gases. The double-discharge design can help to reduce pressure drops and improve flow rates.
Other important parameters to consider include the size and pressure rating of the valve. The valve should be sized appropriately for the application to ensure that it can handle the required flow and pressure. The pressure rating should also be carefully considered to ensure that it is sufficient for the operating conditions.
Additionally, the valve materials should be selected based on the specific application requirements. This may include considerations such as the temperature and chemical compatibility of the fluid being transported.
Overall, understanding the parameters of the double-blocking double-discharge ball valve is essential for selecting the right valve for the job and ensuring safe and reliable operation.

We offer a range of body material options including carbon steel, stainless steel, and alloy steel. Our clients can choose the material that best suits their requirements and budget. Each of these materials has its unique properties and benefits, and we ensure they are of the highest quality. Whether you need a robust and durable body material or a rust-resistant material that will last for decades, we can deliver the right option for you. Our experts can advise you on the best material to use for your specific needs and provide you with a quote that suits your budget.

Caliber: 1/2"~10"(DN15~DN250)

Connection method: RF, BW, thread, socket welding

Pressure range: Class150　-2500 (PN16~PN420)

Working temperature: -46℃-200℃

The working principle of a double-blocking double-discharge ball valve involves the rearrangement of the original content. This valve operates by employing a ball with two separate seals that can block the flow in both the closed and open positions. The ball is positioned between two seats, creating a shut-off function when the valve is closed and a continuous flow path when it is open. When the valve is closed, the first seal prevents any flow from passing through the valve, ensuring a reliable shut-off. Simultaneously, the second seal isolates the cavity behind the ball, preventing any leakage into the piping system. In the open position, the ball is rotated 90 degrees, aligning with the discharge ports, enabling smooth flow through the valve. This design ensures a tight shut-off and minimizes leakage, making the double-blocking double-discharge ball valve effective for various applications in industries such as oil and gas, chemical, and water treatment.

The double-blocking double-discharge ball valve has a floating ball that is supported by two valve seats. When the medium flows through the valve, the ball will move due to the pressure, and it will be pushed against the sealing ring of the outlet valve seat, creating a tight seal. This design ensures that the valve effectively prevents leakage, making it an ideal solution for many industrial applications. By relying on the ball's movement alone to create the seal, this type of valve is reliable and simple, requiring minimal maintenance to ensure uninterrupted operation.

There are two main types of floating ball valves based on their structure: the one-piece ball valve and the split ball valve.

Various industries such as electric power, petrochemical, metallurgy, marine, petroleum, natural gas, gas, and pharmaceutical industries widely utilize products in their hydraulic system pipelines. These products play a crucial role in ensuring efficient operations and smooth functioning of the pipelines. Whether it is the generation of electric power, production of petrochemicals, extraction and processing of metals, transportation through marine vessels, or exploration and distribution of petroleum and natural gas, these industries heavily rely on hydraulic system pipelines and the products that support them. Additionally, the pharmaceutical industry also benefits from these products in terms of fluid and gas handling. Overall, the diverse applications of products in hydraulic systems across various industries highlight their significance and widespread use in facilitating essential operations.

The emergence of ball valves occurred during the 1950s, and since then, they have witnessed significant growth and advancement due to the continuous progress in science, technology, production techniques, and product design. Within a span of just four decades, ball valves have rapidly evolved to become a prominent category within the valve industry. Developed countries in the West have experienced a consistent rise in the utilization of ball valves with each passing year. Similarly, in our own country, ball valves find extensive application in various sectors such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration, steel, and other related industries. The widespread adoption of ball valves in these sectors establishes their crucial role in driving economic progress on a national level.

Technical Data

Application

Packaging & Shipping

The plywood cases with fixed timbers and plastic film inside will be used to pack each individual pump set for shipment. The packaging ensures that the pump is secure and protected during transportation.

To ensure that the packing is done correctly without any damage, we will have container loading conducted in our factory. We will witness the entire process to make sure that everything is done according to our standards. This will help us ensure that the products reach their destination in perfect condition.

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