D671F Type PTFE Sealed Pneumatic Wafer Butterfly Valve

Overview of D671F PTFE Sealed Pneumatic Wafer Butterfly Valve:

The D671F PTFE-sealed pneumatic wafer butterfly valve adopts a fluorine-lined butterfly plate or stainless steel plate with a spherical sealing surface, and is equipped with a silicone rubber gasket at the base of the valve seat to adjust the sealing performance of the valve; the valve is easy to operate and tight Sealing performance, long service life; can be used to quickly cut off or adjust the flow. Suitable for occasions requiring reliable sealing and good adjustment characteristics. The valve body adopts a split type, and the sealing of the current end of the valve shaft is controlled by the rotating base surface between the butterfly plate and the valve seat and fluorine rubber to achieve compact structure, beautiful appearance, reasonable process and reliable performance. The shut-off valve ensures that the valve shaft does not contact the fluid medium in the cavity. It is very convenient to replace the valve shaft. The valve does not need to be separated from the pipeline to complete. The products are widely used in the transportation of liquids and gases (including steam) in various types of industrial pipelines, especially in the occasions that severely punish corrosive media such as sulfuric acid, hydrofluoric acid, phosphorus, acid, chlorine, strong alkali, aqua regia, etc. Strong corrosive medium.

D671F PTFE sealed pneumatic wafer butterfly valve use requirements:

1. Nominal diameter: DN50-600mm

2. Nominal pressure: 1.0-1.6Mpa

3. Applicable temperature: -180℃-235℃

4. Drive form: manual, electric, pneumatic

D671F PTFE Sealed Pneumatic Wafer Butterfly Valve-Product Features:

1. The valve body adopts a split type, and it is convenient to replace parts on site. The surface is coated with epoxy, which has anti-corrosion and abrasion resistance, and has good resistance in salt solution, grease, alcohol, petroleum, weak acids and alkalis and humid environments.

2. The key to the sealing of the emergency shut-off valve lies in the valve seat. We choose a reasonable structural form --- groove type, with a silicone rubber gasket at the base of the valve seat to adjust the sealing performance of the valve. In a reasonable pressure ratio, the valve can be There is no leakage in the specified pressure range. It is completely airtight, and there is no visible leakage in the air pressure test.

3. The valve plate is lined with PTFE lined with spherical sealing surface.

4. Small size, light weight, small torque and easy operation. Long life, tens of thousands of opening and closing tests are intact.

5. It has excellent cutting performance, called durability performance, and adjustment. It can be used to quickly cut off or adjust the flow.

Fluorine-lined butterfly valve seat and valve plate are made of full PTFE, which not only has the mechanical strength of ordinary butterfly valves, but also exerts the strong chemical resistance characteristics of PTFE. It adopts double-segment shaft, up and down segmented technology. It is not suitable for the process medium with particles and high temperature, and it is suitable for semi-medium.

The upper and lower middle holes of the valve plate are designed with spherical friction surfaces, which has a smaller torque and better sealing performance.

A variety of standards are applicable to flange-to-clamp hole connections.