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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.
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...
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
Today we will talk about the difference between metal seal gate valve and resilient seal gate valve.
The sealing surface material is different.
1. Resilient Seated Valve: in the use of resilient seat valve, the two contacting sealing surfaces can be separate or all soft materials such as plastic and rubber can be used. Since the soft material is easy to deform and fills up the unevenness of the sealing surface, the soft seal can achieve a very high degree of medium sealing performance, and this extremely high degree of medium sealing performance can be repeatedly achieved. The disadvantage is that the use of soft sealing materials is affected by the pressure and temperature that the sealing materials can withstand.
2.Metal Seat Valve: metal seat valve is generally made of metal, so it is also called metal sealing surface. The metal sealing surface is susceptible to deformation due to the influence of the medium and the sandwiched particles; it is further damaged by corrosion, erosion and wear. On the contrary, if the wear particles are less uneven than the surface, the accuracy of the relatively rough surface will be improved when the sealing surface is running in.
Metal Seat Gate Valve
The opening and closing part of the metal seat gate valve is a gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.
Types of Metal Seat Gate Valves：
According to the sealing surface configuration, it can be divided into wedge gate valve and parallel gate valve. Wedge gate valve can be divided into: single gate, double gate and elastic gate; parallel gate valve can be divided into single gate Plate type and double gate type.
Divided according to the thread position of the valve stem, it can be divided into two types: open stem gate valve and dark stem gate valve.
Resilient Seat Gate Valve
For industrial valves, the opening and closing parts of soft-sealed gate valves are gates. The movement direction of the gates is perpendicular to the direction of the fluid. The gate valves can only be fully opened and fully closed, and cannot be adjusted or throttled.
Principle of Resilient Seat：
The resilient seat gate valve is divided into two types: bright-stem resilient seat gate valve and dark-stem resilient seat gate valve.
Usually there is a trapezoidal thread on the lifting rod, through the nut in the middle of the gate and the guide groove on the valve body, the rotary motion is changed into linear motion, that is, the operating torque is turned into operating thrust. When the valve is opened, when the lift height of the gate is equal to 1:1 times the valve diameter, the fluid passage is completely unblocked, but this position cannot be monitored during operation.
Application:
1. The resilient seat gate valve is suitable for non-corrosive gas and liquid medium at room temperature (≤80℃). Such as clean water, air, oil, water treatment sewage and other pipelines. And has a very good sealing effect, almost zero leakage can be achieved.
2. The hard seal gate valve is suitable for high temperature (≤425℃) with slightly corrosive gas and liquid. Such as steam, heat transfer oil, sewage, petroleum, chemical industry, metallurgy, pipelines. Can have a certain degree of wear resistance.
3. The difference between soft seal gate valve and hard seal gate valve is that the sealing performance of soft seal is better than hard seal, but the temperature resistance and wear resistance of hard seal gate valve are better than soft seal gate valve.