In 1958 designed the first RHWELKER Mr. Xiang Pise only control valve in order to meet the gas industry to the needs of low-noise multi-purpose, such Xiang Pise-type control valve of universal access to worldwide recognition. Then successively made many improvements to become today's WELKER JET control valve. Features: absolute turn-off, large soft sealing surface, even in the face welding slag, relatively large particles can also shut down tight. Minimum flow is absolutely zero.
Some of the main valve can be individually connected as a direct-action can also be accompanied by indirect effects mediated valve into a style, can also be manipulated by pneumatic control.
The main valve structure: it and the rubber tube valve principle of folders on the contrary, there is a streamlined channel of hollow rubber plug in the middle of the hollow rubber plug there are hydraulic medium, when the hydraulic medium pressure increases, the rubber plug expansion of the annular channel area is smaller, played the role of closure, medium pressure continue to rise, the rubber plug can be completely enclosed channels. Large diaphragm and the valve stem is composed of gas - liquid pressurization device, the deformation of the rubber plug on stress. Large diaphragm control valve is driven by the export of feedback, with the signal pipe connection.
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We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
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