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272020-03Leakage of valve body and bonnet: Causes: 1. Low casting quality of cast iron, defects of sand eyelet, loose structure and slag inclusion on valve body and bonnet body 2. Freezing cracking within days;
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132020-03High performance rubber liner butterfly valve is a well-structured butterfly valve, which is especially suitable for regulating or switching the flow and pressure of various tap water...
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072020-01Valve is an important component in the pipeline system of petrochemical plant. It is one of the main leakage sources in the plant because of its variety and quantity...
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282019-12In the complete set of water supply equipment, whether no negative pressure water supply equipment or variable frequency constant pressure water supply equipment...
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142019-121. The handwheel and handle of manual valve are designed according to the hand force of ordinary people, considering the strength of sealing surface and necessary closing force...
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072019-12Heat treatment technology is an important means to obtain good properties of various metal materials.In many practical applications, reasonable selection of materials and various forming processes can not meet the mechanical properties...
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232019-11ISO 9001 quality system certification, ISO 14001 environmental management system certification, OHSAS 18000 occupational health and safety management system certification, eu CE certification, pressure vessel PED directive, API certification...
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312019-10The strength of the valve is the ability of the valve to withstand medium pressure.Valves are mechanical products under internal pressure and must have sufficient strength and stiffness to ensure long-term use without breaking or deformation.
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242019-10The function, structure characteristic and performance test of backflow preventer are introduced.
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162019-10The characteristics and applications of all kinds of universal valves and special valves are simply described
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