Tianjin KXC Metal Products Co., Ltd.

As a manufacturer of weir diaphragm valve , I hope this article will help you by explaining the definition and types of diaphragm valves. What are Diaphragm Valves? Diaphragm valves utilize a flexible diaphragm to obstruct, control, or isolate the flow of fluids. The diaphragm acts as the flow control element that flexes up or down to increase or decrease the fluid flow rate, respectively. The sealing action of the valve is created as the diaphragm is pressed onto the solid dam inside the valve body. Diaphragm valves are classified as linear motion valves, which require linear motion of the flow control element. Diaphragm valves can handle liquids, gaseous fluids, and semi-solid media such as slurries, colloids, sludges, and brackish water well. These valves are ideal for handling liquids with solid particulate matter. Compared to other valves, they have a much simpler construction. Due to the minimal contact made by their internal components, the build-up of sediments and biofilms in

In recent years, metal-seated eccentric butterfly valves have competed with more traditional industrial valves like the globe and ball valves for critical applications. However, even though lots of people already know how a butterfly valve works, much of the confusion lies in how such eccentric valves differ and what applications are suitable for each. In this article, you are going to walk through the differences between these two kinds of butterfly valves to guide you when choosing a suitable industrial valve for your application. Double Offset Butterfly Valve Double-offset valves feature have two offset stems that offer especially long life due to reduced contact between valve, discs, and seats, and are known as high-performance butterfly valves. If your operations involve high pressures and particulate fluids, this type of valve can be especially useful. Apart from triple-offset butterfly valves, they are one of the most widely available eccentric-type butterfly valves on the mark

How the ball valve works A ball valve  is a globe valve that allows, blocks, and controls the flow of liquids, gases, and vapors in a piping system by rotating a ball with a hole in the valve. The ball is mounted on two seats and has a shaft that connects the ball to the operating and control mechanism that rotates the ball. When the cross section of the orifice is perpendicular to the flow area, fluid is not allowed to pass through the valve. Fluid flows through the valve, and the fluid flow rate depends on the area of the hole exposed in the floor. Ball valve is a kind of quarter-turn valve together with plug valve and butterfly valve. They can be operated manually or using actuators. The simplest operation of a ball valve is with a wrench or a lever turned manually by the operator. Apply torque to turn the lever arm 90° clockwise or counterclockwise to open or close the valve. If the lever arm is parallel to the pipe, the valve is open. If the lever arm is perpendicular to the pipe,

What is a Check valve? A check valve   is typically installed in a pipeline to prevent backflow. A check valve is basically a one-way valve in which fluid can flow freely in one direction, but if the flow is diverted the valve will close to protect the pipeline, other valves, pumps etc. Water hammer can occur if the flow is diverted and no check valve is fitted. Water hammer often occurs with great force and can easily damage pipework or components. Types of check valves There are several types of check valves   available for water and waste water applications. They work in different ways but serve the same purpose. AVK offers a wide range of swing check valves, ball check valves, tilting disc check valves, tilt seat check valves, nozzle check valves and silent check valves. The most common types of water and waste water check valves are swing check valves and ball check valves. Swing check valves: Swing check valves are fitted with a disc that swings on a hinge or shaft. The flap swin

Resilient Sealed Butterfly Valves vs. Metal Sealed Butterfly Valves For metal-seated butterfly valves, both sealing surfaces of the valve are metal materials or other hard materials that do not seal well, but have good mechanical properties, such as high temperature resistance and resistance to wear. While one sealing surface of resilient seat butterfly valve is metal material, and the other sealing surface is non-metallic resilient material. The resilient seat has good sealing performance, but has poor mechanical properties, such as not high temperature resistance and easy wear. Resilient seal butterfly valve  has good sealing performance and can reach zero leakage, but has poor thermal adaptability and short service life. Hard seal butterfly valve has bad sealing performance and can't reach zero leakage, although some manufacturers claim that their products can do it. Metal sealed butterfly valves can be used for some corrosive media, while resilient sealed butterfly valves canno

Choosing the wrong type of valve can be detrimental to your operation. There are several different types of butterfly valves on the market, including high performance, resilient seat, and triple eccentric.   Offset in Butterfly Valves When looking at butterfly valves, the difference between high performance, resilient seat, and triple eccentric butterfly valves has to do with valve offset.    High Performance Butterfly Valves This popular valve is also known as a  high performance butterfly valve  or double offset butterfly valve. The valve has two off-centered stems. This creates a cam action during the application.   ◮1 ST Offset: The axis of the shaft is behind the centerline of the sealing point of the disc seat. ◮2 Second Offset: The axis of said shaft is eccentric to the center of the valve/tube line.   High performance butterfly valves are typically used in: power generation, pulp and paper, HVAC, chemical, oil and gas, water and wastewater treatment, shipbuilding      High perf