Three eccentric metal hard seal flange butterfly valve-WESDOM Group

Product Introduction

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.

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The product has an independent identity to ensure traceability

Each wesdom product has its own unique identification number, to ensure product traceability.

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Provide material inspection report

All wesdom products can provide the material inspection report of the main parts.

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One-stop service

One-stop service, we not only supply high quality products, also supply solutions and after-sales service.

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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.

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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.

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Standard Test

Factory Tour

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.

Factory

Workshop

Quality inspection

Workshop

Product show

Product show

Workshop

Detailed parameters

**Class 150 triple eccentric butterfly valve**

NPS(in)	L(mm)	L1(mm)	H1(mm)	H(mm)	D0(mm)	L0(mm)	WT(Kg)
NPS(in)	L(mm)	L1(mm)	H1(mm)	H(mm)	D0(mm)	L0(mm)	Wafer	Lug	Flange(short pattern)
2	43	108	1 10	135	–	150	10	11	20
3	48	114	125	155	–	180	11	13	29
4	54	127	147	162	–	200	13	16	33
6	57	140	1 66	240	–	300	26	28	74
8	64	152	215	375	1 80	–	36	43	86
10	71	165	238	396	180	–	53	64	142
12	81	178	283	446	180	–	74	86	167
14	92	190	302	472	315	–	110	127	218
16	102	216	338	555	350	–	138	159	275
18	114	222	381	605	400	–	180	211	315
20	127	229	408	638	480	–	196	225	395
24	154	267	495	738	480	–	400	462	580
28	165	292	561	976	480	–	560	655	657
30	190	318	590	1016	610	–	685	812	717
32	190	318	650	1 160	610	–	726	868	880
36	203	330	700	1205	480	–	920	1056	1042
40	216	410	750	1294	480	–	1283	1760	1470
42	229	410	780	1350	480	–	1488	1820	1723
48	254	470	892	1523	480	–	1645	2660	1895

Double eccentric butterfly valve

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.

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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.

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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.

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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.

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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.

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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.

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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.

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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;

Project Pictures: