Application of Butterfly Valve in Sewage Treatment Plant

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The Difference Between A Lug and Wafer Butterfly Valve

The Difference Between A Lug and Wafer Butterfly Valve

2019-02-12 16:59:28

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.

Wafer type butterfly valve installation instructions and steps

Wafer type butterfly valve installation instructions and steps

2019-01-03 16:27:13

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.

Twenty-five Taboos for Valve Installation

Twenty-five Taboos for Valve Installation

2019-09-06 10:23:57

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...

Manual valve operation method

Manual valve operation method

2019-04-01 11:50:16

The manual valve is a valve operated by the handle and the hand wheel, and is a commonly used valve on the equipment pipeline.

Valve common standards and differences

Valve common standards and differences

2019-05-07 17:37:21

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...

Butterfly Valve Seat & Seal Ring Replacement Method

Butterfly Valve Seat & Seal Ring Replacement Method

2021-02-01 18:14:53

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

Resilient Seated Gate Valve

2022-10-17 16:09:38

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's the working principle of Kieselguhr Filter?

What's the working principle of Kieselguhr Filter?

2019-07-01 13:05:32

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

New designed PTFE  RPTFE sealing replaceable seat high performance butterfly valve

New designed PTFE RPTFE sealing replaceable seat high performance butterfly valve

2022-04-24 10:39:22

MINOTAUR series replaceable seat high performance butterfly valve

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Application of Butterfly Valve in Sewage Treatment Plant

2019-12-27 18:24:37
Due to the wiping nature of the butterfly valve plate movement, most butterfly valves can be used for media with suspended solid particles. Depending on the strength of the seal, it can also be used for powdery and granular media.

The structure and overall height of the butterfly valve are small, and the opening and closing speed is fast. When fully opened, it has less fluid resistance. When it is opened to about 15 degrees to 70 degrees, it can perform sensitive flow control The structural principle of the butterfly valve is most suitable for making large-caliber valves.

Under the following working conditions, butterfly valves are recommended:
① Throttling is required to adjust the control flow;
② Mud medium and medium containing solid particles;
③ Where the length of the valve structure is required to be short;
④ Where fast opening and closing is required;
⑤ Where the pressure difference is small.

Under special working conditions, the throttle adjustment or strict sealing requirements, or severe wear, low temperature (deep cold) and other working conditions, the use of special design metal seal with three eccentric or double eccentric special butterfly valve with adjustment device .