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Double Flange Double Eccentric Butterfly Valve

The turning center of the butterfly plate is on the center line of the valve body and the sealing face section of the butterfly plate. In closing, the ex-circle sealing face of the butterfly plate will extrude the valve seat made of synthetic rubber, generating elastic deformation on the seat to form an elastic force used as a sealing specific pressure so as to guarantee the tightness of the butterfly valve.
Product Details

Double Flange Double Eccentric Butterfly Valve 

Double eccentric butterfly valve is further improved on the basis of single eccentric butterfly valve. Its structure is characterized in that the shaft axis deviates from both the center of the butterfly plate and the center of the body. Double eccentricity allows the valve to be opened immediately after the butterfly plate out of the seat, greatly eliminate the butterfly plate and seat unnecessary over-extrusion, scraping phenomenon, reduce the opening resistance, reduce wear, improve seat life. The scraping is greatly reduced, and the double eccentric butterfly valve can also use metal seat to improve its application in high temperature field.


                                

Standard compliance

Type Available: Flanged type

Inspection & Testing: API 598

Basic Design: ANSI/AWWA C504

Materials Standard: Others on request

Face to Face Dimension: BS5155 Short, ISO5752 (Series 13), DIN 3202F16

Flanged End Dimension: DIN PN10/16/25, ANSI B16.1, BS4504, ISO PN10/16, JIS B2212/2213


Material Option:  

Carbon steel  

A216 Gr. WCB, WCC, WCA, etc

Low temperature steel

A352 Gr. LCB, LCC, LC1, etc

Cr-Mo steel

A217 Gr. WC6, WC9, C5, C12, C12A, etc

Stainless Steel

A351 Gr. CF8, CF8M, CF3, CF3M, CF8C, etc

Alloy steel

CN7M alloy 20, CN3M alloy 20 modified, CT15C, etc

Super duplex

A995 Gr. 4A, 5A, CE8MN, CD6MN, CD3MN, etc

Aluminum bronze

B148 C95500, C95600, C95800, etc

Monel

M30C, M35-1, CZ100, etc

Inconel

CY40 inconel 600, etc

Hastelloy

CW2m Hastelly C4, N12MV Hastelloy B, etc

Incoloy

CU5MCuC Incoloy 825, CW6MC Incoloy 625, etc

 

Payment & Shipment 

Payment :30%T/T with order ,70% T/T before the shipment .

Package :carton case or wooden case .

Shipment :  25-45days after payment.

Shipping: by air ,by train mby sea .

Port :Ningbo,Shanghai .


Our Service

1.quick delivery, high quality and reasonable price.

2. We can make products according to the needs of customers.

3. Welcome to inquiry and purchase later in the day for us.

4. Strict quality control system .welcome third party for quality checking

5.We are a factory who focus on produce valves. Adhere  to 
quality is our belief.

 6.All valves according the drawing to produce and 100% pressure 
testing, 100%material inspection.

       


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