Home News Content

Two Kinds Of Butterfly Valve

Jul 10, 2017

                 Butterfly valve is also called the flap valve, is a simple structure of the control valve, but also can be used in low pressure pipe media switches. Butterfly valve refers to the closing piece (disc or butterfly plate) as a disc, revolving around the valve shaft to achieve a valve opened and closed, in the pipeline mainly cut off and throttling effect. Butterfly valve headstock is a disc-shaped butterfly plate, in the valve body around its own axis rotation, so as to achieve the purpose of headstock or adjustment. Butterfly valves are suitable for the transmission of various corrosive, non-corrosive fluids in the pipeline, such as furnace, gas, natural gas, LPG, city gas, hot and cold air, chemical smelting and environmental protection.Butterfly Valve

              Worm gear Butterfly valve: The headstock is a disc plate and can rotate around the body axis of a valve. Structure: mainly consists of valve body, valve stem, plate and sealing ring.  The valve body is cylindrical, with a short axial length and a built-in plate. Work principle: The butterfly board is driven by the stem, if turn over 90°, can complete one opening and closing. The deflection angle of the butterfly plate can be changed to control the flow of the media. Commonly used butterfly valve has pair of butterfly valve and flange type butterfly valve two kinds. The wafer-type butterfly valve is connected between two pipe flanges with a double head bolt, a flanged butterfly valve is provided with a flange on the valve, and a bolt is connected with the flange of the valve on the pipe flange.Butterfly Valve

               Manual midline Butterfly valve: The butterfly plate of the clamping butterfly valve is installed in the diameter direction of the pipe.  In the butterfly valve body cylindrical passage, the disc-shaped butterfly plate revolves around the axis, the rotation angle is 0°-90° between, rotates to 90°, the valve is full open state. The clamping butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. The 90° can be quickly and easily operated, and the valve has good fluid control characteristics. Butterfly valve is in full open position, the butterfly plate thickness is the medium flow through the valve body when the only resistance, so through the valve produced by the pressure drop is very small, it has a good flow control characteristics. The butterfly valve has two kinds of sealing types, which are the seal and the metal seal. Elastomeric seal Valves, seals can be embedded in the body or attached to the perimeter of the butterfly.Butterfly Valve