Pneumatic pneumatic - valve Buried all welded ball type pneumatic valve installation and daily maintenance

. Before installing pneumatic pressure pipeline valve before installation should be pressure test, in order to ensure the rigor and security of the pneumatic valve itself. ( Strength test. Strength test using water as medium; In pneumatic valve on both sides of the sleeves on welding and pressure - Booster to the pneumatic ball valve of the nominal pressure. Times, the holding min; As a qualified without leakage. ( Leak test. Tight. some trials using nitrogen as medium; Pressure to the pneumatic ball valve of the nominal pressure. Insert depth of cm; No air bubbles in the min for qualified. 。 Installation ( Hoisting. Should adopt the way of correct lifting pneumatic valve, in order to protect the pneumatic valve stem, don't tie chain hoist in hand wheel, gear box or actuators. ( Weld quality must conform to the plate bending melting welding joint radiography ( GB— Ⅱ level standard, usually a welding cannot fully guarantee all qualified, so when ordered pneumatic valve manufacturers in the pneumatic valve should be required to increase on both ends. ( Pneumatic valve shaft lining. Realization of direct buried after laying small pneumatic valve hand well, as shown. For all conventional welding pneumatic ball valve is not can be directly buried, and laying large pneumatic valve well, only to form the dangerous confined Spaces, unfavorable to safety operation. . ( Open/close time requirements. And make the pneumatic valve stem damage; According to experience, the switching time of the pneumatic valve, Number of seconds to control the scope of the lower limit can be according to the pneumatic valve nominal size ( Half inch, ceiling according to pneumatic valve nominal size ( ( Pneumatic valve in the operation of state called, pneumatic ball valve is in full open or close, may not be in a half-open or closed position, lest the pneumatic seat damage. 。 Auxiliary gas trunk line of pneumatic valve adjustment, it tends to be short should switch at least once a year and injected into the right amount of grease, prevent sphere and pneumatic seat agglutination and pneumatic ball valve with pneumatic seat between grinding. Straight buried all welded ball pneumatic valve good technical characteristic wave makes the whole gas pipeline but one ( All welding and become, enhances the pipeline ( Including pneumatic valve of the whole stress resistance, resistance to geological disasters, Pneumatic valve reliability life extension, installation and maintenance is very convenient.
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