A butterfly valve is a valve that isolates or regulates the flow of a fluid. The closing mechanism is a disk that rotates. The opening and closing member of a sanitary butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in the sanitary valve body to achieve the purpose of opening, closing and regulating. Full opening to full closure of a butterfly valve is usually less than 900. The butterfly valve and butterfly rod themselves don’t have self-locking capabilities. In order to position the butterfly plate, a worm-wheel reducer needs to be installed on the valve rod. Using a worm-wheel reducer not only makes the butterfly…
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An Overview of Pumps
Pump Definition A pump is a device that moves fluid through mechanical action. Depending on the method used to move the fluid, the pumps can be divided into three main categories: direct lift, displacement and gravity pumps. Pumps have many sources of energy, including manual operation, electricity, electric motors or wind power; pumps are available in a variety of sizes, from micro sanitary pumps for medical applications to large pumps for industrial use. Pump types According to its displacement method, the pump can be divided into a positive displacement pump, an impulse pump, a velocity pump, a gravity pump, a steam pump and a valveless pump. The two basic types…
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Sanitary Double Check Valve-An Overview
What is a check valve? A check valve, or a one-way valve, is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. It is a type of two-port valves. In other words, it has two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. The check valve is available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. Check valve work automatically and most are not controlled by a person or any external…
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Two Basic Types of Butterfly Valve: Lug & Wafer
About butterfly valve Butterfly valves have been around for a long time and have been used more and more widely in various industries since the 1930s when they first came out. Butterfly valves are usually made of cast iron and their name is based on the function of their discs. There are several different types of butterfly valves, but there are always two basic types of butterfly valves — lug and wafer. Butterfly valves are classified as “quarter turn” valves. The valve can be opened or closed by rotating the metal disk of the butterfly valve a quarter turn. When the butterfly valve is fully open, the fluid is allowed…
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An introduction to Sample Valve
A sampling valve is a valve used to take a sample of a medium in a pipeline or equipment. It can be used in many cases where chemical analysis of media samples is required. Here is how most sample valve works: According to the working principle or performance in the sampling process, the sampling valves are mainly divided into four types, including double opening valves, flange clip valves, sampling valves with thermal insulation jackets and aseptic sampling valve. Double open valve The double open valve is a more common sampling valve characterized by safe and stable sampling. It is usually composed of two connected ball valves. Sampling process: first close…
