The valve is a type of device used to control, change or stop the moving components of flow direction, pressure and discharge in the pipeline system. The valve body is a main part of valve. It is made by different manufacturing processes according to pressure class, such as casting, forging, etc. Valve body with low-pressure […]
Depending on the mode of operation, the valve can be divided into the manual valve and an actuator driven valve. Valve actuators are devices that operate and are connected to the valve, controlled by hand (handwheel/spring lever), electric (solenoid /motor), pneumatic (diaphragm, cylinder, blade, air engine, film and ratchet combination), hydraulic (hydraulic cylinder/hydraulic motor) and […]
Valves are one of the main leakage sources in the pipeline system of the petrochemical industry, so it’s critical to the leakage of valves. Valve leakage rates are actually the valve sealing level, valve sealing performance is referred to as the valve sealing parts to prevent the ability of media leakage. The main sealing parts […]
As we all know that the ball valve can be divided into full port ball valve and reduced ball valves according to the flow passage form. A full port ball valve, commonly known as full bore ball valve has an over-sized ball so that the hole in the ball is the same size as the […]
DBB (double block and bleed valve) and DIB (double isolation and bleed valve) are two kinds of commonly used seat sealing structures for trunnion mounted ball valves. According to API 6D, DBB ball valve is a single valve with two sealed auxiliary, the closed position of which provides the pressure seal at both ends of […]
Lined valves are a safe and reliable solution to any level of corrosion flow for chemical industrial. The lining of the valves and fittings ensures extremely high chemical resistance and longevity. PTFE lined valve and PFA lined valves are the commonly used valves that used as more economic alternatives to high-grade alloys in corrosive applications […]