Triple Eccentric Butterfly Valve

Home > News > Industry News  > Triple Eccentric Butterfly Valve

Main Product

  • China Athena Double Eccentric Butterfly Valve Manufacturer | EN593 Water Valve Supplier manufacturer
  • China Double Eccentric Flange Butterfly Valve manufacturer

    Double Eccentric Flange Butterfly Valve

    RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...

  • China Swing check valve manufacturer

    Swing check valve

    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...

  • China Hydraulic Control Valve manufacturer

    Hydraulic Control Valve

    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...

  • China Ball Check Valve manufacturer

    Ball Check Valve

    Ⅰ Business area: fluid control products, technology and environmental protection products. Ⅱ Advanced CNC machining centers, professional process ce...

  • China Metal Seated Gate Valve manufacturer

    Metal Seated Gate Valve

    RKS fluid was founded in 1997. We are a production workshop for both foundry and machining, research & development center, and quality inspection cent...

  • China Resilient Seated Gate Valve manufacturer

    Resilient Seated Gate Valve

    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

  • China Resilient Seat Butterfly Valve manufacturer

    Resilient Seat Butterfly Valve

    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

News

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.

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.

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...

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...

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...

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 ...

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

Contact us

RKSfluid Flow Control Company

Web: www.rksfluid.com
Tel:  +86 24 2318 0188
Fax: +86 24 2318 0788
Mail: info@rksfluid.com

Triple Eccentric Butterfly Valve

2022-09-08 11:10:02


Butterfly valve must be hard sealed to withstand high temperature, but the leakage is large;To achieve zero leakage, soft seals must be used, but they are not resistant to high temperatures.In order to overcome the contradiction of the double eccentric butterfly valve, the butterfly valve is eccentric for the third time.


Its structural feature is that when the position of the double eccentric valve stem is eccentric, the conical axis of the disc sealing surface deviates from the cylinder axis of the valve body,That is, the third eccentric disc seal section is no longer a true circle, but an ellipse, the shape of the sealing surface is asymmetric, one side and the body center line tilt, the other side and the body center line parallel.

The characteristic of this third eccentricity is that it fundamentally changes the sealing structure, no longer a positional seal, but a torsion seal;That is, it does not rely on the elastic deformation of the valve seat, but completely relies on the surface pressure contacting the valve seat to achieve the sealing effect.

Therefore, the metal seat zero leakage problem solved at one stroke, and because the contact surface pressure is proportional to the pressure of the medium, high pressure resistance, high temperature resistance is also easy to solve.