Cast Iron Hand Lever Clamp Lugged Wafer Type Triple Offset with Flanged Cement Butterfly Valve

Cast Iron Hand Lever Clamp Lugged Wafer Type Triple Offset with Flanged Cement Butterfly Valve

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

Our series of quality standards support our unremitting pursuit of Bidirectional Triple Offset Butterfly Valve, Forged Ball Valve, EPDM Butterfly Valve's stable performance and warm services. In the era of speed and change, our company is born for high-quality, and scientific development. By purchasing advanced equipment and introducing high-tech talents, we have provided a strong guarantee for the development and production of first-class products.

【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 company has a strong customer base, a high-quality professional team, and a complete sales network to provide high-quality products and perfect services for various Cast Iron Hand Lever Clamp Lugged Wafer Type Triple Offset with Flanged Cement Butterfly Valve. After years of development, we have built an efficient team that insists on innovation and is committed to improving the technological content and product quality of manufacturing. We strive to achieve the common development of the company and society, and help each other on the road of development to achieve a win-win goal.
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