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Valve Installation
2015-11-12 by bridge
Cut-off valve, throttle, valves, check valves and other valves are directional, if installed anti-flip, the throttle will affect the results and life; valve does not work, check or even dangerous.
Generallygas valve, directional signs on the body; there is no case, should be based on the valve works properly identified.
Cut-off valve left-right asymmetry of the valve chamber, the fluid through the valve port to make its bottom-up, so fluid resistance (determined by the shape), open effort (due to media pressure up), shut down after the media do not pressure filler, easy to repair . That is why the non-closing valve An anti-truth. Other valves also have their own characteristics.
Position of the valve is installed, it must be accessible to operate; even with some temporary difficulties, but also for the sake of the operation of permanent staff.
The best Pilot Safety Valves hand wheel and chest aligner (generally operate from floor 1.2 meters), so that the opening and closing the valve more provincial effort. Landing valve hand wheel should be facing up, do not tilt, in order to avoid awkward operation. Wall machine by the valve device, also set aside an operator standing room. To avoid his back operation, especially acid, toxic media, otherwise very safe.
Do not flip gate (ie handwheel down), otherwise it would be retained in the valve cover long-term media space, easily corroded valve stem, and for certain process requirements are taboo. At the same time replace the packing very inconvenient.
1, the valve to be installed vertically on a horizontal pipe, do not tilt in all directions.
2, lift check valve, when the valve is installed to ensure that its vertically to lift flexible.
3, swing check valve, when installed to ensure its pin level to swing flexible.
4, stem gate valve, do not install in the ground, otherwise due to moisture and corrosion exposed stem.
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