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Must the flange of the equipment itself be chosen with a male-female surface or a rod-slot surface?

2021-12-28View Original

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According to clause 4.1.7 of HG/T20583, the seal surface type for connection flanges should be a male-female surface or a rod-groove surface. When the equipment is installed vertically, the male or grooved surface should face upward; when the equipment is installed horizontally, the male or grooved surface should be located on the cylinder or on some fixed component. ”Is it possible to choose other flange types by default when conditions permit? Such as when the pressure is low and the medium is not hazardous. Since there are equipment such as air buffer tanks and water tanks on site, it seems unnecessary to use raised and recessed flanges; is it okay to choose WN RF instead? Does the selection of the gauge flange type for the equipment itself also need to comply with clause 4.1.7?

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