RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...
Swing check valve is mounted with a disc that swings on a hinge or shaft. The disc swings off the seat to allow forward flow and when the flow is stop...
Features： Fully bore globe pattern design, lowest head loss while fully open Keep stable working condition even the flow rate close to zero High sens...
Ⅰ Business area: fluid control products, technology and environmental protection products. Ⅱ Advanced CNC machining centers, professional process ce...
RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...
Series: SASQUATCH series soft seal gate valve Port size: DN50 - DN900 (NPS2-NPS36) Pressure rating: PN10, PN16 Temperature: 0℃~80℃ Connection: Flange Certificate: CE ,WRAS,API,OHSAS18001:2007,ISO9001:2015
Butterfly valves have been around for a long time, and are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries ever since. Often made out of cast iron, butterfly valve's name is based from the functionality of its disc.
The wafer butterfly valve is one of the most common types of valves in industrial pipelines. The structure of wafer butterfly valve itself is relatively small. It is only necessary to put the butterfly valve in the middle of the flange at both ends of the pipe, and use the stud bolt to pass through the pipe flange and the pair.
Valves are the most common equipment in chemical companies. It seems easy to install valves, but if they are not implemented in accordance with the re...
The manual valve is a valve operated by the handle and the hand wheel, and is a commonly used valve on the equipment pipeline.
DIN standard now uses EN standard structure length
EN 558-1 PN flange connection valve construction length (instead of DIN 3202), EN 558-2 CLASS flange connection valve construction length (instead of BS2080), EN 12982 butt weld end valve construction length (instead of DIN 3202), DIN standard The length of the structure including the length of the API valve is basically the same as the length of the GB...
The butterfly valve disc is a key component of the butterfly valve, which acts on closing and opening and closing. Butterfly valve seat and butterfly ...
Resilient-seated gate valve with bolted cover connection; made of ductile iron materials and with epoxy coating, designed as both clockwise and anti-c...
What is Kieselguhr Filter? What's the working principle of Kieselguhr Filter? The kieselguhr filter (Candle filter / Cake Filter) which we for customized for fluorine chemical plant six more lithium fluoride phosphate phosphorus process have been installed and working for two years
MINOTAUR series replaceable seat high performance butterfly valve
The relationship between the opening degree of the butterfly valve and the flow rate is basically linear. If used to control flow, its flow characteristics are closely related to the flow resistance of the pipeline. For example, the diameter and form of the two pipeline installation valves are the same, the pipeline loss coefficients are different, and the flow difference between the valves is also large.
If the valve is in a large throttle state, the back of the valve plate is prone to cavitation, which may damage the valve. Generally, it is used outside 15 °.
When the butterfly valve is in the middle opening, the shape of the opening formed by the valve body and the front end of the butterfly plate is centered on the valve shaft, and two sides are formed to complete different states. The front end of the butterfly plate moves in the water direction and the other side flows in the opposite direction. Therefore, one side of the valve body and the valve plate form a nozzle-like opening, and the other side is similar to a hole-like opening. The seal will come off.
The operating torque of the butterfly valve varies according to the opening degree and opening and closing direction of the valve. Horizontal butterfly valves, especially large-caliber valves, due to the depth of the water, the torque generated by the difference between the upper and lower heads of the valve shaft cannot be ignored.
In addition, when an elbow is installed on the valve inlet side, a bias current is formed and the torque increases. When the valve is in the middle opening, the operating mechanism needs to be self-locking due to the effect of water flow torque.
Above is all the introduction of the butterfly valve using the principle and installation method, I hope that through our explanation can help you understand the butterfly valve in more detail.
+86 138 8989 6699 
