Long-term storage, periodic inspection, the need to maintain surface flow clean and remove dirt and coated with preservatives to make it in a semi-open, both ends of the flange blocking tight with special pads, please place the indoor air dry.
Check the label before installation diameter half ball valve, pressure, temperature, compliance with engineering conditions, eliminating transportation and storage caused by defects, appearance and flow will clean, check and tighten the screws on the limit nuts.

Installed at the direction of media flow on the body directly installed on the pipe. Under normal circumstances, can be installed anywhere in the pipeline. If the half ball valve used in the granules containing the fluid suspension position when installed vertically from the horizontal pipeline installation and pipeline installation in two ways.
Clockwise rotation of hand wheel operation for the closure of the hand wheel is turned counterclockwise, rotate 98 degrees to fully open valve fully closed. Pneumatic valve configuration can only use special hand-wheel, by means of extension rod or other non-operating, so as to avoid damage to the parts, of the valve work.
When used, the gate valve should be kept clean and regularly check the drive mechanism is lubricated properly, and removes hidden faults.

Use half ball valve
Half ball valve out of the normal operation as a whole for the full use of full closure, but also can make adjustment and throttle use, but pay special attention to the flow direction of the media in order to avoid sealing surface by erosion or increased wear. Corrosion resistant material half ball valve, they have been widely used in water, steam, water, petrochemical, natural gas, pulp and other two-phase solution and the media, and dust the ideal gas transmission equipment.
Classification and characteristics of half ball valve

Electric high-voltage half ball valve
Eccentric half ball valve: chain by the rotary valve to the valve flow or occlusion. Valve switch light, small size, can be made into a large-caliber, reliable sealing, simple structure, easy maintenance, regular spherical surface and seal in the closed state, the media can not easily be eroded, in the various sectors has been widely used.
Upload eccentric half ball valve: Top eccentric half ball valve internal parts from the upper part of the installation and dismantling of the valve, the advantage of maintenance, no need to remove from the line, you can replace the valve in the accessories.
Side eccentric half ball valve: its internal structure is one type, the internal parts are installed and dismantled from the side of a valve.

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2011-03-23

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