1, the valve should be installed in the water supply pipe network pressure test, wash qualified backward valve

    Check quantity: full inspection.

    Check: Check the pipe pressure test and flushing records.

    2, before valve installation should be checked: the specifications and design of the model should be consistent; external valve control line and pilot valves each connecting member should not be loose; the appearance should be no mechanical damage, and foreign bodies in the valve should be removed.

    Check quantity: full inspection.

    Inspection methods: control drawings, observe the inspection and examination lever

 

    3, the valve flow direction should be consistent with the water supply pipe network.

    Check quantity: full inspection.

    Inspection method: observation inspection.

    4, should be installed at the inlet side of the filter, and should be installed in the front and rear control valves.

    Check quantity: full inspection.

    Inspection method: observation inspection.

    5, adjustable pressure reducing valve should be installed horizontally, the valve cover should be on.

    Check quantity: full inspection.

    Inspection method: observation inspection.

    6, the proportional valve should be mounted vertically; when horizontally mounted, single breathing hole at its orifice valve should double their breathing holes valve orifice should be in a horizontal position.

    Check quantity: full inspection.

    Inspection method: observation inspection.

    7, the installation itself valve without pressure gauge, pressure gauge should be installed before and after the adjacent site.

    Check quantity: full inspection.

    Inspection method: observation inspection.