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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
Series: HYDRA Series Resilient Seat Butterfly Valve Temperature: -29℃ ~ +120℃ Pressure: PN6, PN10, PN16(Class 150) Port Size: DN32-DN2400(NPS1 1/4-NPS96) Power: Manual, Electric, Pneumatic, Hydraulic
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.
The manual valve is a valve operated by the handle and the hand wheel, and is a commonly used valve on the equipment pipeline.
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...
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...
Resilient-seated gate valve with bolted cover connection; made of ductile iron materials and with epoxy coating, designed as both clockwise and anti-c...
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 ...
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 hard seal butterfly valve is made of metal material or harder other materials called "hard seal". This seal has poor sealing performance, but high temperature resistance, wear resistance and good mechanical properties. For example: steel + steel ; steel + copper; steel + graphite; steel + alloy steel; (the steel here may also be cast iron, cast steel, alloy steel may also be surfacing, spraying alloy).
Hard-seal butterfly valve: The two sides of the sealing pair are made of metal material or other hard materials. It is called "hard seal". This seal has poor sealing performance, but it is resistant to high temperature, abrasion and mechanical properties. Steel + steel; steel + copper; steel + graphite; steel + alloy steel; (the steel here may also be cast iron, cast steel, alloy steel may also be surfacing, sprayed alloy).
Soft seal: the side of the seal pair is made of metal material, and the other side is made of elastic non-metallic material. It is called "soft seal". This seal has good sealing performance, but it is not resistant to high temperature and easy to wear. Poor mechanical. For example: steel + rubber; steel + PTFE [wiki] polyethylene ;
The soft-sealed disc valve means that one side of the sealing pair is made of a material having a relatively low hardness. Generally, the soft sealing seat is made of a non-metallic material having a certain strength, hardness and temperature resistance, and the sealing performance is good, and can be done. Zero leakage, but the life and temperature adaptability is poor. The hard seal is made of metal, and the sealing performance is relatively poor, although some manufacturers claim to be able to make zero leakage.
The soft seal can not meet the process requirements for a part of corrosive materials, and the hard seal can be solved;
These two seals can complement each other, and the soft seal is relatively good in terms of sealing, but now the seal of the hard seal can meet the corresponding requirements;
The advantage of the soft seal is that the sealing performance is good, and the disadvantage is that it is easy to age, wear and have a short service life;
The hard seal has a long service life, but the seal is relatively inferior to the soft seal.
sealing