Full lined PTFE butterfly valve

Introduction

The fully lined fluorine butterfly valve is not only simple in structure, small in size, light in weight, low in material consumption, small in installation size, but also small in driving torque, easy and fast to operate, and it can also have good flow joint function and closing and sealing characteristics at the same time. One of the fastest growing valve varieties in the past ten years.

Advantages

The main advantages of the fully lined fluorine butterfly valve are simple structure, small size, light weight, and low cost. The fully lined fluorine butterfly valve is particularly prominent. It is installed in a dark tunnel at high altitude and is controlled by a two-position five-way solenoid valve. It is easy to operate and can also adjust the flow of media. The fluid resistance is small, and the effective flow area of ​​the medium and large diameter pneumatic butterfly valve is large when it is fully opened, and the opening and closing is quick and labor-saving. The opening and closing of the disk can be completed by rotating 90 degrees.

Since the medium forces of the disc wrenches on both sides of the shaft and head are nearly equal, the torque produced is in opposite directions, so the opening and closing torque is small, and a good seal can be achieved under low pressure. The butterfly valve sealing materials include nitrile rubber and fluorine. Rubber, edible rubber, lined with tetrafluoroethylene, so it has good sealing performance. Among them, the hard sealing disc valve is a soft and hard laminated metal sheet, which has the advantages of metal hard sealing and elastic sealing, and has excellent sealing performance regardless of low temperature.
Practical application

With the application of chemically resistant synthetic rubber to the butterfly valve, the fully lined fluorine butterfly valve, because polytetrafluoroethylene (PTFE) has strong corrosion resistance, stable performance, not easy to age, low friction coefficient, easy to form, stable size, and also The overall performance can be improved by filling and adding appropriate materials, and a metal hard-sealed butterfly valve with better strength and lower friction coefficient can be obtained.

Therefore, polymer materials represented by polytetrafluoroethylene and their filling and modified materials have been widely used in butterfly valves, so that the performance of butterfly valves has been further improved, and there has been a wider temperature and pressure range, and sealing performance. , Butterfly valve with longer service life.

Technological innovation

Due to the application of computer-aided design (CAD), computer-aided manufacturing (CAM) and flexible manufacturing system (FMS) in the valve industry, the design and manufacture of fully lined fluorine butterfly valves have reached a new level. It not only completely innovated the valve design and calculation method, but also reduced the heavy repetitive routine design work of professional and technical personnel, so that technicians have more energy to improve the technical performance of products and the research and development of new products, shorten the cycle and improve Increased labor productivity.

Especially in the field of pneumatic wafer-type regulating butterfly valves, due to the application of CAD/CAM, there has been a three-dimensional sealing pair designed by CAD and manufactured by cAM numerically controlled processing, so that the sealing surface of the valve does not have any squeezing or rubbing during the opening and closing process. Damage and wear, so that the sealing performance and service life of the fully lined fluorine butterfly valve are improved by orders of magnitude.