Industry News

  • Valve selection instructions

    Valve selection instructions

    1. Selection of gate valve   In general, gate valves should be preferred.  Gate valves are not only suitable for steam, oil and other media, but also for medium containing granular solids and large viscosity, and suitable for vent and low vacuum system valves.  For media...
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  • About the use of check valves

    About the use of check valves

    Usage of check valve  1. Swing check valve: The disc of the swing check valve is disc-shaped, and it rotates around the shaft of the valve seat passage. Because the inner passage of the valve is streamlined, the flow resistance ratio increases.  The drop check valve is small, suitable for low flo...
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  • What conditions need to be met when stainless steel valves are sealed

    What conditions need to be met when stainless steel valves are sealed

    Valves are used as a complete set of air separation equipment in chemical systems, and most of their sealing surfaces are made of stainless steel. In the grinding process, due to improper selection of grinding materials and incorrect grinding methods, not only the production efficiency of the val...
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  • Regulations and requirements for pipeline valve installation

    Regulations and requirements for pipeline valve installation

    1. When installing, pay attention to the direction of medium flow should be consistent with the direction of the arrow voted by the valve body. 2. Install a check valve before the condensate after the trap enters the recovery main pipe to prevent the condensate from returning. 3. Rising stem valv...
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  • What are the valves for sea water

    What are the valves for sea water

    Reasonable selection of valve type can reduce material consumption, reduce local resistance and energy consumption, facilitate installation and reduce maintenance. In this article, Dongsheng Valve has introduced to you which valves are used for seawater. 1.Shut-off valve...
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  • General requirements for the installation of seawater valves

    General requirements for the installation of seawater valves

    The installation position of the valve should be arranged centrally on one side of the device area, and the necessary operation platform or maintenance platform should be provided.Valves that require frequent operation, maintenance and replacement should be located on th...
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  • Valve material: what is the difference between 304, 316, 316L?

    Valve material: what is the difference between 304, 316, 316L?

    Valve material: what is the difference between 304, 316, 316L?   "Stainless steel" "steel" and "iron", what`s characteristics and the relationships are they? How is 304, 316, 316L come, and what is the difference between each other?   Steel: Material with iron as the pr...
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