Di/Wcb/CF8 Double Flange Butterfly Valve with EPDM/PTFE Liner

Di/Wcb/CF8 Double Flange Butterfly Valve with EPDM/PTFE Liner

* Size : DN900
* Pressure : PN10
* Connection Type : Double Flange ends
* Rubber Liner type
* Water、Sea water application

Product Details

Over the years, we have followed the business philosophy of 'efficiency, pragmatism, innovation, and transcendence', committed to providing customers with high-quality API 609 Double Offset Butterfly Valve, DN350 LUG Butterfly Valve, Water Butterfly Valve and services, hoping to create a win-win situation with customers. We are fully adjusting the corporate structure in accordance with the modern corporate model and striving to build a perfect corporate management system. We practice integrity, law-abiding principle and continuous improvement, thus creating an influential enterprise abroad.

【Main Introduction

Rubber Seated Butterfly Valve is a valve made of Ductile Iron.This type of valve is easy to install and maintain. It has no restrictions on the mounting direction and can be installed in any direction on the pipe.Is one of the major exports of zhengfeng valves. The main design standards by API609、EN593、GB/T 12238、AWWA C504...The products are mainly used in wastewater, seawater, waste gas, sewage and so on.


Products Information

* Nominal Diameter  : DN900                                                            * Pressure : PN10

* Connection Way : Flange ends                                                       * Operation : Free shaft for mounting Actuator

* F/F length : 337mm                                                                         * Painting Color : Gray

* Valve Structure : Rubber seated concentric struction                     * Seat Structure : NBR lined

* Suitable Temperature : -29°C ~ 110°C                                            * Suitale Pressure : PN≤10Bar

* Provide Matching Flanges and bolts : Yes                                      * Function : Throttle

* Body : Ductile Iron                                                                           * Disc : A351-CF8M

* Seat : Material NBR                                                                        * Stem : AISI410

* Manufacture standard : EN 593                                                      * End flanges dimension :EN 1092-1


微信图片_20191102135208QQ图片20191102171935


Material Characteristics

DI Butterfly Valve material has two kinds of iron: cast iron and ductile iron

Ductile iron has a strength advantage over cast iron. Ductile iron has a tensile strength of 60K, while cast iron has a tensile strength of only 31K. Ductile iron has a yield strength of 40K, while cast iron has no yield strength and eventual fracture. Strength Ductile Iron - The cost ratio is far superior to cast iron.

In most applications, such as water, brine, steam, etc., ductile iron is superior to steel in corrosion resistance and oxidation resistance. Due to the microscopic structure of ductile iron, the anti-vibration performance is weakened and the toughness is superior to steel, so it is more conducive to reducing the pressure.


Our solutions are broadly acknowledged and dependable by users and may meet consistently developing economic and social requires for Di/Wcb/CF8 Double Flange Butterfly Valve with EPDM/PTFE Liner. We always exploit, innovate and seek development as our strategy core. We take the corporate policy of grasping quality and benefiting, creating high-quality goods to expand the market, and always consider our customers and serve them sincerely.

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