First, the solenoid valve does not work after power Check the power supply connection is not good → re-wiring and connector connection Check the power supply voltage is within the scope of work → → tune the normal range of the coil is not desoldering → re-welding coil short circuit → replace coil work pressure The difference is not appropriate → adjust the pressure difference → or replace the appropriate solenoid valve fluid temperature is too high → replace the solenoid valve has the appropriate impurity impurities so that the main solenoid valve solenoid valve and move the core → cleaning, seal damage should be replaced Sealed and installed filter Liquid viscosity is too high, the frequency is too high and life has been → Replace the product Second, the solenoid valve can not close the main spool or iron core seal has been damaged → Change the seal fluid temperature, viscosity is too high → Replace the opposite solenoid valve impurities into the solenoid valve spool or move the core → cleaning spring has reached or deformed life → replace the orifice balance hole blocked → promptly clean the working frequency is too high or life has been to → re-election product or update Third, the other leaks → check the seal is damaged, the spring is assembled Good external leakage → loose connections or seal has been broken → screws or fasteners replace the head of the noise → loosening the seal is energized, tighten. Voltage fluctuation is not within the allowable range, adjust the voltage. Core suction surface impurities or uneven, timely cleaning or replacement.
Cylindrical Johnson Screen is a wedge shaped wire welding filter element for solid-liquid separation. Cylindrical screen is a kind of Johnson screen and can be made into different shapes (Basket Shaped Johnson Screen, Nozzle Cap , Tubal Johnson Screen and Conical Johnson Screen and so on). Its filtration mode is filtering from the outside to the inside and filtering from the inside to the outside.
The minimum slot opening cylindrical Johnson screen is 25 um (0.001 inch) and the maximum slot opening cylindrical Johnson screen is 25 millimeter (1 inch).
The common material is 304, 321, 316 L, 904 L duplex stainless steel 2205, duplex stainless steel 2507, Monel alloy.etc.
It is widely used in many fields, such as petroleum refining and refining industry, water supply and sewage treatment, pulp and paper industry, mining and sand processing, construction industry, food filtration, nuclear power and so on.
Cylindrical Johnson Screen
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