VALVE

  Difference Between Butterfly Valves and Gate Valves Gate valves As the name implies, the main function of a valve is as a gatekeeper. The gate is the main part of gate valves. A movable gate within the valve allows flow or blocks it. This movable gate is controlled by a mechanical assist such as a screw or lever, which lifts or lowers the gate within. Gate valves come in many shapes and sizes but tend to be large. Think of the valves controlling flow of water in main water supply pipes. In spite of their sometimes prodigious size, gate valves are designed to be controlled by a single individual. Butterfly valves A close cousin of the gate valve, and an ingenious variation, a butterfly valve can also come in many shapes and sizes. Such a valve also functions by using an internal gate. The difference between this and a gate valve is in the way the gate operates within the valve. Unlike the gate valve, the gate within the butterfly valve remains fixed and swivels around an internal ...

  Among all types of valves, there is a particular one with the most beautiful name—the   butterfly valve . How did the name come from? In answering this question, we could use analogy. For example, the ball valve looks like a ball, so can we guess that the butterfly valve looks like a butterfly? Well, it seems a little funny, but I have to say: “Bingo, right answer!” The butterfly valve is a regulating valve with simple structure, and it can be used for switching control of a low pressure pipeline medium. The opening and closing member (valve or disc) of the butterfly valve is a disc that rotates around the valve shaft to open and close. In the cylindrical passage of the butterfly valve body, the disc rotates about the axis to achieve flow control. The valve is fully open when the disc reaches 90°, and changing the angle of the disc can adjust the flow of the medium. When the butterfly valve is fully open, it has a small flow resistance; when it is between about 15° and 70°, ...

  High performance butterfly valves are usually made from metal like stainless steel or cast iron because they offer the most strength and durability against high pressure. They can range from less than a foot to more than a yard in diameter depending on the application. Different kinds of butterfly valves are used in different situations; triple offset butterfly valves, for example, are used for pipe lines with moderate to high pressures that require more control and tighter seals whereas  FEID AVALVE high performance butterfly valves  are sanitary and are therefore used in water pipes. High performance butterfly valves are constructed using solid pieces of high quality metal in order to exceed the standards of regular valves. These hydraulic and pneumatic valves can be used in many situations that transport water, chemicals, slurries and gases among other substances. High performance butterfly valves are usually double offset valves that are designed to be eccentric in ...

FEIDA  High Performance Butterfly Valves  are used in rigorous applications especially in the petrochemical and offshore settings. FEIDA design and engineered this high quality butterfly valves with a fire safe feature. Such feature typically incorporates a secondary sealing seat that will maintain a positive shutoff when the primary seal is destroyed in a fire. This secondary sealing seat is made of indestructible materials that can tolerate extremely high temperature. Fire safe butterfly valve models, just like other types of butterfly valves, are used not only for on/off function but also for control applications. In most cases, the primary seat of fire safe butterfly valves offers near zero-leakage assurance. The secondary metal seat can perform sealing function, but may allow minimal leakage at high temperature that occurs during fire. The main sealing seat is usually made of the material called PTFE (polytetrafluoroethylene) also known as Teflon. The ...

The Exploded View of Solid Metal Seat Tripple Offset Butterfly Valve: FEIDA is specialized in  High Performance Butterfly Valve  for more than 15 years. There are 2 main facilities includes 2 valve assembly & testing factories, 1 large CNC machinery plant, 1 investment casting foundry (3000T/Y) and 1 valve R&D center, equipped with most advanced production equipment and testing equipment. The  fire safe butterfly valve  is also in FEIDA VALVE product range. Our fire safe butterfly valve is certificated by American Petroleum Institute (API) according to API 607 standards. FEIDA also build up a dustless workshop to produce ultra-clean valve for some critical working condition such as nuclear industry, semiconductor industry etc. In the dustless workshp, FEIDA also produce the food-grade valves.  FEIDA food-grade valve  is certificated by Food and Drug Administration (FDA).

Butterfly valves  are similar to ball valves but have several advantages. They are small and, when actuated pneumatically, open and close very quickly. The disc is lighter than a ball, and the valve requires less structural support than a ball valve of comparable diameter. Butterfly valves are very precise, which makes them advantageous in industrial applications. They are quite reliable and require very little maintenance. FEIDA is specialized in  High Performance Butterfly Valve  for more than 15 years. There are 2 main facilities includes 2 valve assembly & testing factories, 1 large CNC machinery plant, 1 investment casting foundry (3000T/Y) and 1 valve R&D center, equipped with most advanced production equipment and testing equipment. Thefire safe butterfly valveis also in FEIDA VALVE product range. Our fire safe butterfly valve is certificated by American Petroleum Institute (API) according to API 607 standards. FEIDA also build up a...