Wednesday, 13 April 2016

Butterfly valve function

A butterfly valve is a type of quarter turn valve. A quarter turn valve can open or close whenever the handle is turned degrees (a quarter of a turn). The main function of these valves is to control the flow of liquids through a section of pipe.


Butterfly valves are mainly used in waste treatment systems. The actuator outside the valve can be fixed to an automatic mechanism or a remote control mechanism which can control the desired flow of the liquid. The actuator or the valve spindle can also be attached to a lever for manual control of the valve.

In this valve the disc seat contact axis is offset, which acts to virtually eliminate sliding contact between disc and seat. The butterfly is a metal disc mounted on a rod. When the valve is close the disc is turned so that it completely blocks.


Selecting a butterfly valve for this function requires more calculations and allow for system requirements. The user must be able to identify the maximum flow requirement , which is equivalent to the design flow, and maximum pressure drop allowe which is provided by the consulting engineer and is usually three to five pounds maximum. When the butterfly valve is fully close the disk completely blocks the line. When the edge of the disc faces the system product flow, the valve is in the fully open position.


Classification of Valves Based on Function.

A control valve that regulates the flow of fluid falls in the regulation category. Check Valves Ready For Shipment. Multiple Models In Stock. Over 30Valves Ready To Ship. In the pharmaceutical, chemical and food industry a butterfly valve is used to interrupt product flow (soli liqui gas) within the process.


It is lighter in weight than other types of valves and requires relatively low pressure drops. Valve serve a various function within the piping system. Stopping and starting a fluid flow. Depending on whether a valve is open or close it let pass the process fluid or halt the fluid. Throttling the fluid flow.


Some of the valves let you throttle the fluid depending open of total opening. Additionally, hygienic butterfly valves function in water filtration, textiles, fragrance, and flavor. The ink and paint industries utilize the work of a hygienic valve. They start the liquid and stop the flow through a pipe.


It is, therefore, very effective and efficient. The valves are fully automated to perform as expected. Designed specifically for HVAC applications, the advanced butterfly valve assemblies offers an intelligent, energy efficient, and reliable high flow solution with a focus on ease of installation, application flexibility, and longevity.

In other words, the wafer version of butterfly valves was designed to hold a tight seal, safeguarding against bi-directional pressure differential in order to avoid any backflow in systems that have been manufactured for uni-directional flow. Ball and butterfly valves are commonly used with modulating actuators to achieve this function. Buil view, and order automated ball, butterfly , plug valves, and flow meters online. A valve with a circular body and a rotary motion disk closure member, pivotally supported by its shaft.


Outstanding throttling accuracy for process control is achieved through low-friction, erosion resistant sealing surfaces with very low operating torques. Lowest Prices - Industrial Valve s. Water Valve s - Low Prices, Buy Now.

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