Di Wafer Butterfly Valve for Fire Fighting

Di Wafer Butterfly Valve for Fire Fighting

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

Product Details

Our Stainless Steel Butterfly Valve, Floating Ball Valve, Bidirectional Triple Offset Butterfly Valve has won unanimous praise from customers because of their novel design, reliable quality, and beautiful appearance. Welcome all over the world customers send us enquiry and looking forward your good co-operation!Please your inquiry for more details or request for dealership in selected regions. We continue to improve our competitiveness in the core areas of design, R&D and innovation, and marketing models.

【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.


Generally customer-oriented, and it's our ultimate goal for Di Wafer Butterfly Valve for Fire Fighting. Since we own advanced technology, excellent product quality, and a complete sales service system, we have occupied the market and won the reliance of our customers. Our customers are all over the world, and we are highly praised by our customers in terms of product quality, manufacturing technology, delivery time, cost and service.

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