Manual valve how to operate

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Valve on the hand wheel, the handle is normal human design, therefore, the use of the provisions of the valve does not allow the operator to use the lever and long wrench to open or close the valve. Handwheels, handwheels with a diameter (length) of <320 mm, only for personal operation, handwheels> 320 mm in diameter, allowing the two to operate together or allowing one person to operate the valve by means of a suitable lever, typically not more than 0.5 m long. But the diaphragm valve, pinch valve, non-metallic valve is prohibited to use the lever or long wrench operation, nor allowed to close the valve too. Valve such as gate valve and stop valve, closed or open to the end (ie, bottom dead center or top dead center) to be rotated 1/4 ~ 1/2 laps, so that the thread is better close together, the operation is advantageous, so as not to overstress, Damage to the valve. Some operators are accustomed to using the lever and long wrench operation, that the greater the closing force the better, in fact not the case. This will cause premature valve damage, and even lead to accidents.

PTFE Spiral Wound Gasket

PTFE Spiral Wound Gasket is a type of gasket that is widely used in various industries such as chemical, petrochemical, and power generation. It is made of a combination of PTFE (polytetrafluoroethylene) and a metal winding, usually stainless steel or carbon steel.
The PTFE material used in this gasket is known for its excellent chemical resistance, high-temperature resistance, and low friction coefficient. It is also a non-stick material, which means that it can easily release any adhesive substances that may come into contact with it. This makes it an ideal material for use in applications where there is a high risk of chemical corrosion or contamination.
The metal winding used in the PTFE Spiral Wound Gasket provides the gasket with the necessary strength and stability to withstand high pressures and temperatures. The metal winding is usually made of stainless steel or carbon steel, which are known for their excellent corrosion resistance and durability.

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