Three eccentric metal hard seal flange butterfly valve
Size Range: 2"-48"
Deaign standard: API 609
Test inspection: API598
Working temperature: 304/316 seat: -73-+450℃
Pressure: CLASS 150-CLASS 900
Suitable medium: Fresh water / Sea water / Salts water / Steam / Gas / Air etc
This series of butterfly valves is a new generation of patented products which is independently researched and developed by our company, no pin connection is through a valve rod milling flat straight connected with the butterfly plate matched, with countersunk head bolt is fixed, is more convenient in assembly, firmer connection security. Use triple eccentric sealing structure, no mechanical wear, can achieve zero leakage, with bidirectional sealing function superior, is used as the best device in oil, chemical industry, metallurgy, electric power, building materials, food, medicine, water supply, and drainage, gas delivery of different media, such as adjust, cut off or connected to the fluid flow.
On the basis of double eccentric design, the centreline of the plate seal surface and seat centreline forms an angle (y °, and enables a slight wedge effect when the plate contacts the) flexible metal seat, and slight movement and radial deformation of the seat ring along with the plate, average compression around the seat ring thus achieves complete sealing. This unique triple eccentric design fully applies the Cam effect in the valve, greatly reduces the friction at the contact area, the possibility of leakage, and also the opening torque value, increases longer service life, and achieves easy and convenient operation.
Why choose us!
WESDOM patent products, patent certification
The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards
for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.W
The product has an independent identity to ensure traceability
Each wesdom product has its own unique identification number, to ensure product traceability.E
Provide material inspection report
All wesdom products can provide the material inspection report of the main parts.S
One-stop service, we not only supply high quality products, also supply solutions and after-sales service.D
WESDOM has a lot of project experience
We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.O
WESDOM has a strict quality control system
WESDOM has a strict quality control system and before delivery, we test 100% of each product to ensure its quality, promising you a high quality product.M
WESDOM GROUP consists of 5 factories and 4 overseas branches. The five factories are mainly located in Tianjin, Hebei, Shandong, Lianyungang and Wenzhou. The four foreign branches are located in Tanzania, Zambia, Kenya and Indonesia.
Advantages of wesdom butterfly valve!
Longer service life thanks to tilted disc
The tension on the disc is released after a few degrees of opening which minimises wear of the disc seal. Furthermore, the design minimises the compression of the sealing which ensures low operating torques.W
Safe disc and shaft connection
The disc and shaft are connected by means of a key and a keyway. The key’s secured with two set screws to prevent fluttering caused by flow velocity and necessary play in the key and keyway connection. Within the large dimensions the disc is secured with two stainless steel drive dowels, with key and keyway as back-up.E
Two seat designs
The integral seat design features a machined and epoxy coated ductile iron seat integrated in the body. The stainless steel seat design has a replaceable seat ring of stainless steel sealed with an O-ring to avoid leakages under the seat ring.S
Disc seal optimised for high performance
The disc seal is formed to secure fixation in correct position providing a very reliable function. The superb rubber quality makes it possible to reduce the amount of rubber which ensures low closing torques. The EPDM sealing is approved by DVGW, KIWA and WRAS.D
Shaft design features
The shaft sealing’s replaceable under pressure to enable easy maintenance. Sealings of EPDM secure tightness from inside and out, and NBR sealings protect against impurities and fluids from outside.O
The low friction PTFE bearings ensure low
Operating torques and therefore the protected shaft ends secure durability since there are no uncoated ductile iron surfaces exposed to the media.M
Bi-directional and slim design
The valves are bi-directional although valves from DN700 and up are marked with an arrow indicating the preferred flow direction. We’ve also minimised the weight to make handling easier and to put less strain on the environment.M
Project Name: Pakistan Sewage Treatment Plant Project
Main Products: Flanged/lug Butterfly Valves and Gate Valves
This case is an old customer from Pakistan. Because he has purchased valve products from WESDOM many times, he has very high trust and evaluation on WESDOM. He needs a lot of butterfly valves and gate valve products in the sewage treatment plant project which he is responsible for. They sent the requirements to the businessman of WESDOM's international trade department without hesitation. Of course, WESDOM still returns this old customer in Pakistan with high-quality products and preferential prices;
After that, the customer also sent us the installation pictures of the WESDOM product in the working condition project, and feedback that the quality is still very good, and will maintain a long-term cooperative relationship with WESDOM;
If you have any questions, feedback or comments, please fill out the form below and we will reply you back as soon as possible.