Soft sealed butterfly valve is a versatile valve with exquisite structure and wide application. The core design feature is the use of elastic soft materials (such as rubber, PTFE) as the valve seat sealing ring, forming a tight interference fit with the edge of the butterfly plate, thereby achieving excellent bidirectional zero leakage sealing effect. The soft sealed butterfly valve is mainly composed of a valve body, a butterfly plate, an elastic valve seat, a valve stem, and a driving device. Its working principle is to drive the butterfly plate to rotate 90 ° inside the valve seat through the valve stem, and then quickly open or close the flow channel. Thanks to its short structural length, light weight, and rapid opening and closing, soft sealed butterfly valves have obvious advantages in situations where installation space is limited or frequent operation is required. The flange soft seal butterfly valve, centerline clamp soft seal butterfly valve, rubber lined soft seal butterfly valve, fluorine lined soft seal butterfly valve, double eccentric soft seal butterfly valve, stainless steel soft seal butterfly valve and other soft seal butterfly valves produced by Kaiweixi Valve are widely used in water treatment, HVAC, water supply and drainage, fire protection and general industrial pipeline systems, suitable for regulating and cutting off water, air, oil and neutral media.

Hard sealed butterfly valve is a high-performance industrial valve, characterized by the use of metal or high hardness wear-resistant materials for the sealing surfaces of the valve seat and butterfly plate. Through precision machining of sealing pairs and high closing torque, a rigid metal to metal (or hard material) seal is formed, suitable for harsh working conditions such as high temperature, high pressure, wear and corrosive media. Hard sealed butterfly valves usually adopt multi-level sealing or eccentric structure design (such as double eccentric, triple eccentric), which effectively reduces friction during the opening and closing process of the butterfly plate, achieving tight cutting and long service life. The main structure includes a valve body, a metal valve seat, a hard butterfly plate, a valve stem, and a driving device. The flange hard seal butterfly valve, clamp hard seal butterfly valve, multi-level hard seal butterfly valve, double eccentric hard seal butterfly valve, triple eccentric hard seal butterfly valve, electric hard seal butterfly valve, pneumatic hard seal butterfly valve and other hard seal butterfly valves produced by Kaiweixi Valve have significant advantages of wide temperature resistance, high pressure resistance, and strong wear resistance. They can be widely used in thermal power, petrochemical, metallurgical, steam systems and hazardous medium pipelines.

Electric butterfly valve is an automated control valve that integrates the butterfly valve body and electric actuator. It is driven by electricity and driven by the internal motor of the actuator to achieve precise rotation of the valve stem and butterfly plate from 0 ° to 90 °, realizing automatic and remote flow regulation or cutoff control of pipeline media. Electric butterfly valves are mainly composed of valve body, butterfly plate, valve seat, valve stem, electric actuator and control unit. According to the sealing form, it can be divided into two types: soft seal and hard seal, which are respectively suitable for conventional medium and low pressure, room temperature working conditions, and harsh working conditions such as high temperature, high pressure, and abrasive media. It can achieve precise positioning by receiving standard control signals (such as 4-20mA, 0-10V, or switch signals) and provide feedback on valve opening status, seamlessly integrating into industrial automation systems such as PLC and DCS. The flange electric butterfly valve, clamp electric butterfly valve, hard seal electric butterfly valve, soft seal electric butterfly valve, high-performance electric butterfly valve, intelligent electric butterfly valve, adjustable electric butterfly valve and other electric butterfly valves produced by Kaiweixi are widely used in the fields of water supply and drainage, HVAC, energy, chemical and environmental protection, and are the core executive components in modern intelligent pipeline systems.

Pneumatic butterfly valve is an automated execution valve powered by compressed air. Its core lies in combining butterfly valves with pneumatic actuators (such as single acting spring reset and double acting), driving pistons or gear racks through air sources, and driving the valve stem and butterfly plate to rotate from 0 ° to 90 °, achieving rapid cutting, switching, or proportional adjustment of pipeline media. Pneumatic butterfly valves are mainly composed of valve body, butterfly plate, valve seat, valve stem, pneumatic actuator and auxiliary control components (such as solenoid valve, locator, filter pressure reducing valve), and air source triple components. According to sealing requirements, it can be divided into soft seal type (used for normal temperature and pressure sealing) and metal hard seal type (used for high temperature, high pressure, and abrasive media). The soft seal pneumatic butterfly valve, hard seal pneumatic butterfly valve, clamp pneumatic butterfly valve, flange pneumatic butterfly valve, welded pneumatic butterfly valve, stainless steel pneumatic butterfly valve, sanitary pneumatic butterfly valve, quick installation pneumatic butterfly valve and other pneumatic butterfly valves produced by Kaiweixi Valve have significant advantages of fast action (usually only a few seconds for opening and closing) and high safety (essentially explosion-proof). It can be flexibly connected to the automation control system by receiving switch signals or analog control signals, and is a key equipment for emergency shutdown, process adjustment, and remote control.