+86 138 8989 6699 
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
HOW TO PICK YOUR VALVE SEAT MATERIALS
Control valves regulate the flow of fluids as the position of the valve plug or disk changes with the force from the actuator. For this the valve has to achieve different things:
The development in technology has resulted in the creation of several styles of control valve bodies. Some of them can be used for different purposes as required. Let us look at some of them:
Single port valve bodies
This is the most common style and is simple in its construction. Various forms of this valve seat are available – angle, globe, forged, bar stock, and split constructions. The single port valves are used where the shut off requirements are stringent. In these valves metal to metal seating surface or soft seating with PTFE or other material is used to make the seat. Most service requirements can be handled with these types of valves. Due to the fact that the high pressure fluid is loaded in the complete area of the port, there is an unbalanced force created and this should be kept in mind while choosing actuators for them.
Balanced plug cage style valve body
This is also a popular type of valve used for many purposes. In this only one seat ring is used and hence it can be considered to be single ported. This provides the advantage of a balanced valve plug which usually only double ported valves provide. With the cage style trim there is the benefit of valve plug guiding, seat ring retention, and flow characterization. Apart from the sliding piston ring type seal separating the wall from the upper portion of the valve plug the cage cylinder completely ensures that there is no leakage of the upstream high pressure fluid into the downstream system which is lower pressure.
High capacity cage guided valve bodies
These are mainly designed for noise applications like high pressure gas reducing stations where the velocity of the gases is quite high especially at the outlet of the conventional valve bodies. There are oversized end connections incorporated in the design with a streamlined flow path which makes the trim maintenance easy with cage style constructions.
Port guided single port valves
These are also very popular for different applications. They usually contain a screwed seat ring which can be difficult to take out later. It is possible to choose a smaller actuator for this type of valve due to the reduced dynamic forces acting on the plug, even though it is a single ported one with similar capacity.
There are many other types of valve seat materials and bodies that can be chosen according to the requirement at hand. You can learn about the different types of valve bodies, seat materials and their proper usage by conducting some research on the internet. There are not only the websites of the suppliers of these items, there are also many articles and blogs providing information about the different types of valves, seat materials and their usage.