果冻久久尤物

Stainless steel clamping eccentric butterfly valve D373W

The butterfly plate installed on the pipe diameter direction. Butterfly valve body in the cylindrical channel, disc shaped disc around the axis of rotation, the rotation angle of 0 degrees -90 degrees, can play the role of flow regulation, when the butterfly plate rotation to 90 degrees, the valve to achieve maximum opening. The butterfly valve has the advantages of simple structure, small size and light weight. Besides, the utility model has the advantages of simple operation and simple operation, and the valve can be opened and rotated at 90 DEG.

The butterfly plate installed on the pipe diameter direction. Butterfly valve body in the cylindrical channel, disc shaped disc around the axis of rotation, the rotation angle of 0 degrees -90 degrees, can play the role of flow regulation, when the butterfly plate rotation to 90 degrees, the valve to achieve maximum opening.

The butterfly valve has the advantages of simple structure, small size and light weight. Besides, the utility model has the advantages of simple operation and simple operation, and the valve can be opened and rotated at 90 DEG. Butterfly valve is fully open position, the thickness of the plate is the only medium through the body resistance, so the pressure drop through the valve is very small, it has a good flow control characteristics. Butterfly valve with elastic soft seal and metal seal two seal type. Elastic soft sealing valve, sealing ring can be embedded in the valve body or attached to the butterfly plate.

The use of metal seal valve is generally longer than the elastic seal valve life, but it is difficult to completely seal. The metal seal can adapt to high working temperature, and the flexible soft sealing has the defects of temperature limitation.

If the requirements for the use of flow control valve, the main choice is the right size and type of valve. Butterfly valve structure principle is particularly suitable for the production of large diameter valves. Butterfly not only in oil, gas, chemical, water treatment, and other general industries have been widely used, but also applied to thermal power station cooling water system. This kind of valve should be installed horizontally in the pipeline.

Common butterfly valve on the folder type butterfly valve and flange type butterfly valve two. Clip on butterfly valve is used to connect the valve between the two pipe flanges, flange type butterfly valve is a flange on the valve, the valve will be on both ends of the valve flange connected to the pipe flange.

structural style

(1) center seal butterfly valve (2) single eccentric seal butterfly valve (3) double eccentric seal butterfly valve (4) eccentric seal butterfly valve

Sealing surface material

(1) soft sealing butterfly valve. 1) the sealing pair is composed of non metallic soft material. 2) the sealing pair is composed of metal hard material and nonmetal soft material. (2) metal hard seal butterfly valve. The seal is composed of metal hard material and metal hard material.

Seal form

(1) forced sealing butterfly valve 1) elastic sealing butterfly valve. Sealing pressure from the valve when the valve plate closed valve seat, valve seat or valve plate elastic. 2) torque seal butterfly valve. The seal torque is generated by the torque applied to the valve shaft. (2) pressure seal butterfly valve. Sealing pressure from the valve seat or valve plate on the elastic parts of the sealing element pressure. (3) automatic sealing butterfly valve. The sealing pressure is automatically generated by the medium pressure.

Working pressure

(1) vacuum butterfly valve. Butterfly valve with working pressure lower than the atmospheric calendar. (2) low pressure butterfly valve. Butterfly valve nominal pressure PN<1.6mpa. Pn= ">100MPa" butterfly valve.

working temperature

(1) high temperature butterfly valve. T>450 degree C butterfly valve (2) medium temperature butterfly valve. 120 C<t<450 DEG C butterfly valve. (3) room temperature butterfly valve. A 40C<t<; 120 degree C butterfly valve. (4) low temperature butterfly valve. A 100<t< 40 degree C butterfly valve. (5) ultra low temperature butterfly valve. T< a 100 degree C butterfly valve.