New Lotoke High-Performance Double Offset Butterfly Valve

High-performance double eccentric butterfly valve is a commonly used control valve, which adopts a new type of double eccentric structure, which has the advantages of small flow resistance, good sealing and flexible operation, and is widely used in petrochemical, electric power, metallurgy, fertilizer, pharmaceutical and other industries. This article will introduce the design characteristics, classification, applicable working conditions and summary of high-performance double eccentric butterfly valves in detail.

First, design features

The high-performance double eccentric butterfly valve adopts double eccentric structure, which is mainly composed of valve disc, valve seat, bearing, etc. Its design features are as follows:

1. Double eccentric structure: Compared with the traditional butterfly valve, the shaft and sealing surface of the double eccentric butterfly valve are not on the same center line, which can effectively reduce the resistance of the fluid.

2. Multi-layer metal sealing ring: The multi-layer metal sealing ring is adopted, which has good high temperature resistance, wear resistance and corrosion resistance, and ensures the sealing performance of the valve.

3. Adjustable clearance between valve seat and valve disc: The gap between valve seat and valve disc can be adjusted to ensure its tightness and flow control.

4. Bearing support: the use of bearings for support, the valve runs more smoothly, not easy to leakage, jamming and other problems.

II. Classification

High-performance double eccentric butterfly valves can be divided into the following categories according to different structures and uses:

1. Intermediate high-performance double eccentric butterfly valve: The main feature of intermediate high-performance double eccentric butterfly valve is good sealing, which can be widely used to transport gas, liquid and solid under various working conditions.

2. Flanged high-performance double eccentric butterfly valve: The main features of flanged high-performance double-eccentric butterfly valve are easy to use, convenient maintenance, and relatively simple disassembly, replacement of bearings, seals and other components.

3. Jacketed high-performance double-eccentric butterfly valve: Jacketed high-performance double-eccentric butterfly valve is mainly used in special environments such as high temperature, high pressure and corrosion in chemical processes.

4. Feeding type high-performance double eccentric butterfly valve: Feeding type high-performance double eccentric butterfly valve is suitable for feeding or discharging occasions in metallurgy, pharmaceutical and other industries.

3. Applicable working conditions

High-performance double eccentric butterfly valves are widely used in a variety of working conditions, but different materials and models need to be selected according to specific working conditions. In general, it is suitable for the following types of working conditions:

1. Low temperature and high temperature working conditions: different sealing materials and cold and heat compensation structures can be used to adapt to different temperature requirements.

2. High viscosity and high sand content: select high-quality bearings and sealing materials to ensure their normal operation.

3. Corrosive fluid working conditions: use suitable valve body materials and sealing materials to ensure that they can withstand corrosive fluids.

IV. Summary

High-performance double eccentric butterfly valve is a kind of control valve with small flow resistance, good sealing and flexible operation. It is widely used in petrochemical, electric power, metallurgy, fertilizer, pharmaceutical and other industries. High-performance double eccentric butterfly valves of different models and materials, suitable for different working conditions, with good installation, maintenance and ease of use.

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