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When the valve plate is fully open, the top of the valve plate is in contact with the valve cover. Without stopping the water, the bolts, valve cover and nuts can be disassembled for seal replacement and repair.

Use the hand wheel when opening and closing the pneumatic butterfly valve. Do not use levers or other tools to avoid damaging the valve parts.

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Gate valves and butterfly valves both function as switches to regulate flow in pipelines. Of course, there are still methods in the selection process of butterfly valves and gate valves.

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Check valve refers to a valve whose opening and closing parts are circular discs and rely on their own weight and medium pressure to act to block the reverse flow of the medium.

Make sure the pipe is not dirty and doesn’t have welding particles, for example, before installing it. This may cause irreparable damages in the valve when the equipment is started → prepare a clean working area.

For valves that are not frequently opened and closed, the handwheel should be turned regularly and lubricant should be added to the valve stem thread to prevent seizure.

Before opening the steam valve, the pipeline must be preheated and the condensate water must be discharged. Open slowly to avoid water hammer and damage to valves and equipment.