Di Body Manual NBR Seat Wafer Butterfly Valve

Di Body Manual NBR Seat Wafer Butterfly Valve

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

Product Details

Our advancement depends over the highly developed devices, excellent talents and continually strengthened technology forces for Flange Triple Offset Butterfly Valve, Metal-seated Butterfly Valve, Pneumatic Ball Valve. Our products enjoy good popularity among our customers. Our corporate mission is to enhance customer value and catalyze employee capabilities.

【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 eternal pursuits are the attitude of 'regard the market, regard the custom, regard the science' as well as the theory of 'quality the basic, have confidence in the very first and management the advanced' for Di Body Manual NBR Seat Wafer Butterfly Valve. Our business policy is guided by technology, based on integrity and product quality, guaranteed by service, pursuing excellence to build a brand. Since the establishment of the company, in the process of wholeheartedly providing high-quality products and services for customers, our company always adheres to the first strategy of enterprise development with information resources, drives product innovation with service innovation and quality innovation with scientific and technological progress.

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