Nodular Cast Iron Di Butterfly Valve with PTFE Seat PFA Liner Disc

Nodular Cast Iron Di Butterfly Valve with PTFE Seat PFA Liner Disc

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

Product Details

On the basis of absorbing and adopting customer suggestions we will constantly improveBronze Butterfly Valve, Pneumatic Ball Valve, Cast Steel Ball Valve. We have been persisting in the business essence 'Quality First, Honoring Contracts and Standing by Reputations, providing customers with satisfying goods and service. Relying on a sound management system, we provide customers with a complete and reliable cooperation platform with excellent research and development capabilities, high-quality products and efficient services. Our company relies on the customer demand first, thoughtful service becomes the wind vane of the industry and wins the trust of the majority of customers.

【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.


We are a professional and reliable Nodular Cast Iron Di Butterfly Valve with PTFE Seat PFA Liner Disc provider for our customers. We operate the enterprise with the concept of technological innovation and concerted efforts, so as to provide customers with professional, efficient, accurate and safe products and services. The application of new products, new materials of low-carbon energy-saving products have promoted the development of our company. Passing Value', in the potential, we sincerely invite you to mature up with us and create a vivid foreseeable future jointly!

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