Introduction to RKSfluid filter bag

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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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Introduction to RKSfluid filter bag

2019-10-12 15:17:41
The filter bag is a part of the filter which is widely used and has a relatively frequent replacement frequency. It can be said to be a relatively core part in the process of filter filtration, and the filtering effect mainly depends on the material, the weaving method, and the subsequent processing.


Common filter bags are made of natural and synthetic fibers. Natural fibers include: cotton, hemp, silk, wool, etc. These filter bags are short in fiber and easy to swell in water, so they have strong performance in retaining impurities, and the filtering effect is good, but the highest safe temperature is low, and it is not resistant to acid. Alkali, not suitable for use in high temperature corrosive conditions. There are many types of synthetic fibers, such as nylon, polyester, acrylic, polyester, etc., which have higher safety temperature and chemical resistance than natural fibers.

In the weaving, the yarn can be selected from monofilament yarn, multifilament yarn and short fiber yarn. The filtration speed of the monofilament yarn filter cloth, the dryness of the filter cake and the ability to remove the cake are strong, and the filtrate transparency and use of the short fiber yarn filter cloth are used. The life is higher, and the various properties of the multifilament yarn are between the above two. In the production of the filter cloth, a weaving method or a non-woven method can be used. The weaving method is to weave the yarn into a filter cloth by using a certain weaving rule, and can be divided into plain, twill, and satin according to different weaving rules. Instead of weaving, wool or synthetic staple fibers are mechanically pressed into a "cloth" in which a resin binder can be added to ensure firmness. In terms of performance, although the filtering speed of the weaving filter bag is not as good as that of the non-woven filter bag, the filter cake drying rate, the cake breaking ability and the service life have strong advantages.


It can be said that there are many types of filter bags. When selecting the type, it is necessary to choose according to the requirements of the working conditions and the nature of the filtrate. Do not blindly follow. RKSfluid filter bags can be selected according to your requirements.

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