Class Approval Marine High Performance Butterfly Valve Double Offset

Class Approval Marine High Performance Butterfly Valve Double Offset

1. When opening or closing, there is no friction between the disc and the sealing surfaceof the Wafer Triple Offset Butterfly Valve;
2. The valve can be installed in any location;
3. Zero leakage design;

Product Details

With several factories, we will provide a wide assortment of Cast Steel Ball Valve, DN350 LUG Butterfly Valve, Floating Ball Valve. We have developed large markets in many countries all over the world. We will move forward with our customers with excellent quality, reasonable price and perfect after-sales service. We warmly welcome you to establish cooperation and create a bright future together with us.

【Product Introduction】:

Wafer Triple Offset Butterfly Valve shown in the figure is a worm gear made of carbon steel material. The seat sealing material can be a full metal ring, and can be made of a graphite type laminated metal, which is elastic. The PTFE seat seal is a flexible seat butterfly valve. This seat can be design and produced as zero leakage type and suitable for corrosive medium.It is easy to produce and costs less than all metal seat butterfly valves.


【Application Of PTFE Seal-ring】:

PTFE people aslo call it Teflon.It has high temperature resistance, corrosion resistance, excellent electrical insulation, aging resistance and other characteristics.Resistant to the corrosion of almost all chemicals, but by molten alkali metal erosion. ZFVALVES Butterfly valve often uses PTFE as the valve seal-ring.PTFE has become the main corrosion resistant material in petroleum, chemical and textile industries due to its excellent corrosion resistance.As Seal ring the working temperature is -29℃~150℃.

*  PTFE Mechanical property:

   σb (MPa):20.7~27.5

   δ5 (%):250~350

   αk (J/cm2):>98.1

   HARD(HB):50~65D

* Thermal properties:

   Distortion temperature:1.86MPa:55℃; 0.46MPa:120℃

   Martin temperature:250℃


美标对夹蝶阀IMG_5704(1)


How to choose the right Butterfly valve】:

1) According to the nature of the working medium: working pressure, working temperature, corrosion performance, whether it contains solid particles, whether the medium is toxic etc to choosing the right material.

2) Installation size and dimensions: nominal diameter, connection to pipe and connection dimensions, dimensions or weight restrictions.

3) Select the appropriate operation mode according to the actual situation.

4) The maximum and minimum flow requirements; pressure drop for normal flow; pressure drop at shutdown; maximum and minimum inlet pressure for the valve.

5) Select the correct connection according to the reserved location of the pipeline.

The final control of the pipe is the valve. If you have any questions regarding valve selection, please contact us.ZFV will give you the most professional advice and the most suitable choice.


Our primary target will be to provide our clients a serious and responsible small business relationship, supplying personalized attention to all of them for Class Approval Marine High Performance Butterfly Valve Double Offset. If you are interested in our products and services, or more suggestions, please feel free to contact us, we will serve you wholeheartedly. We are looking forward to establishing a wide range of cooperation with customers from all over the world. Our company creates an educational environment of continuous motivation, courage and enterprising, lifelong learning, and pursuit of career achievement, so as to build a high-efficiency and low-cost education environment.

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