Home > Products

PTFE Lined flange Butterfly Valve

  • The PTFE Lining Wafer Type Butterfly Valve has excellent chemical stability and corrosion resistance. It is one of the best corrosion resistant materials today. Except for molten metal sodium and liquid fluorine, it can resist all kinds of chemicals. It can not change when boiling in aqua regia. It is widely used in all kinds of acid-base and organic solvent resistant.


  • 1. Small and light , and easy installation and mintanance. It can be mounted wherever needed.
  • 2. Compact structure, 90 degree fast switch.
  • 3. Miniminzed operating torque, energy saving.
  • 4. Flow curve tending to straight line. Excellent regulation performance.
  • 5. Long service life Standing the test of tens of thousands opening/closing operations.
  • 6. Bubbles-tight sealing with no leakage under the pressure test.
  • 7. Wide selection of materials, applicable forvarious medium.

The above data is for reference only, please contact us for more details.

Flange butterfly valve series:
Check before installation:

1.Check whether the valve model and specification are consistent with the design model.

2.According to the requirements of design drawings, check whether the service conditions of valves meet the design requirements.

3.Valves must have product certificate and nameplate of manufacturer.

4.Before valve installation, visual inspection and action inspection shall be carried out one by one to check whether the valve stem rotates flexibly and whether there is any sticking phenomenon.

5.10% of valves shall be sampled in batches, and no less than one piece shall be inspected for size; If unqualified, check again 20%; If there are still unqualified products, the appearance quality should be checked one by one, and the valve sampling comparison and water pressure test should be carried out in accordance with relevant specifications.

6.Clean the inner cavity of the valve, and do not attach foreign matters to the sealing ring and disc. Do not close the butterfly plate before cleaning, so as not to damage the sealing ring.

7.When the valve is not in use, the butterfly plate should be in a slightly open state, and the valve should be neatly stored in a ventilated and dry warehouse, and should be kept away from light to prevent rubber aging. Stacking and outdoor storage are strictly prohibited. Both ends of the valve shall be sealed with plugs to prevent dust and impurities from entering the valve.

Our service

Company qualification

Exhibition and foreign trade customers

Warm and excellent team

Exporting country


Please Feel free to give your inquiry in the form below.we will reply you in 24 hours.

  • *
  • *
  • *
Home Tel Mail Inquiry