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  • Function and classification of check valve (1)

      Check valve definition Check valve refers to the valve that automatically opens and closes the valve disc depending on the flow of the medium itself to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. Check valve action...
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  • Classification characteristics of hydraulic control valves

    Hydraulic control valve is a water pressure controlled valve, which consists of a main valve and its attached conduit, pilot valve, needle valve, ball valve and pressure gauge. According to different purposes, functions and places of use, it can be developed into remote control float valve, pres...
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  • Y-stainer introduction and testing principles

    Introduction to Y-Stainer Y-stainer is an indispensable filter device for conveying media in piping systems. Y-stainer is usually installed on the inlet end of a pressure relief valve, pressure relief valve, constant water level valve or other equipment to remove impurities in the medium to prot...
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  • Three-piece ball valve product difference

    Three-piece ball valve product difference One – piece, two – piece, three – piece ball valve fundamental difference in the valve body structure. One-piece ball valve is reduced diameter, by a plug head will be fixed sphere, flow is relatively small; Two-piece ball valve is full...
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  • What is knife gate valve?

    [Knife gate valve] NORTECH brand. Flange knife gate valve, wafer knife gate valve, sewage knife gate valve, pneumatic knife gate valve standard, structure drawing, specifications and models, dimensions, working principle and product manual. To provide customers with high quality, high performanc...
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  • The main function of check valve

    –, wafer check valve use:   Check valve installed in the pipeline system, the main role is to prevent media flow back, check valve is a kind of media pressure open and closed automatically. Wafer check valve is suitable for nominal pressure PN1.0MPa~42.0MPa, Class150~ 25000; Nominal diamet...
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  • How check valves work ?

    Check valve is to rely on the flow of the medium itself and automatically open and close the valve disc, used to prevent the media flow back valve, also known as check valve, one-way valve, reverse flow valve and back pressure valve. Check valve is a kind of automatic valve, the main function is ...
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  • Check valve usage

    A, swing check valve: swing check valve disc is a disc, revolving around the shaft of the valve seat channel for rotary movement, because the valve channel into streamline, flow resistance ratio   Drop check valve small, suitable for low flow velocity and flow not often change of large diameter ...
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  • Stainless steel globe valve from NORTECH Valve

    Stainless steel globe valve is a kind of globe valve, the valve body material requirements are relatively high 301.304.316 and other materials are widely used in chemical industry, shipping, medicine, food machinery and other industries. Stainless steel stop valve is divided into manual stainle...
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  • Flange Gate Valve

    [Flange Gate Valve] NORTECH brand Quality assurance, NORTECH VALVE comprehensively introduces relevant standards, type selection, function, structural drawing, specification and model of flange gate valve; Overall dimension, working principle, product manual, installation and maintenance and pro...
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  • Fluorine Lined Valve

    [Fluorine Lined Valve ] nortech brand valve. Nortech comprehensively introduces the relevant standards, type selection, function, structural drawing, specification and model of [fluorine lined valve]. Provide you with the outline dimension, working principle, product manual, installation and mai...
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  • Common faults and troubleshooting of safety valve (2)

    4. The pressure continues to rise after venting This is mainly because the displacement of the selected safety valve is smaller than that of the equipment, and the appropriate safety valve should be re selected; If the center line of the valve rod is not aligned or the spring is rusted, so that ...
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