PARKER, PARKER solenoid valve is composed of electromagnetic coil and core, consists of one or a few holes of the body. When the coil electricity or without electricity, magnetic core operation will lead to flow through the valve body or is cut off, in order to change the direction of flow. Electromagnetic Industrial Valves electromagnetic components by the fixed core, moving iron core, coil and other parts; Body parts by a valve core, valve cover, spring base, etc. The electromagnetic coil is directly installed on the valve body, the body is enclosed in a sealed tube, constitute a combination of a simple, compact. We commonly used in the production of the solenoid valve have two three links, two cross, two five. Here about two meanings: first for the electromagnetic valve is charged with electricity, for the control valve is opened and closed. Park PARKER solenoid valve working principle and the working principle of the troubleshooting PARKER PARKER solenoid valve solenoid valve at home and abroad in principle can be divided into three categories: ( I. e. , straight acting, step by step straight acting, guiding type) , and from the disc structure and material of different and the difference on the principle is divided into six branches small class ( Diaphragm structure, step by step of moving heavy piece of membrane structure, the structure, the forerunner in straight moving piston structure, step by step piston structure, the forerunner of moving piston structure) 。 Classification and characteristics of direct acting solenoid valve PARKER PARKER solenoid valve: principle: electricity, electromagnetic coil to produce electromagnetic force to shut down from the seat lift, the valve opening; Power, the electromagnetic force disappears, press on the seat, spring to close the Industrial Valves closed. Features: in a vacuum, negative pressure, can work properly when the zero pressure, but size is generally not more than 25 mm. PARKER PARKER step-by-step direct acting solenoid valve: principle: it is a direct acting and pilot operated the principle of combining when the inlet and outlet no pressure difference, after electrify, electromagnetic force directly combine small pilot valve and main valve closed in lift, the valve opens. When the inlet and outlet at startup pressure difference, after electrify, the electromagnetic pilot valve, main valve inferior vena pressure rising, the cavity pressure drop, which using differential pressure to the main valve opened up; Power cuts, pilot valve using the spring force or medium pressure push off, move down, to close the valve. Features: on the zero differential pressure or vacuum and high pressure, to action, but power is larger, requirements must be installed level. PARKER PARKER guiding type solenoid valve: principle: electricity, electromagnetic force open the pilot hole, the chamber pressure drops rapidly, in closed form around the high low differential pressure, fluid pressure push close up, the valve open; Power off, the spring force to close the guide hole, inlet pressure chamber through the by pass hole quickly in closing valve using a form around the high differential pressure, fluid pressure push close move down, close the valve. Features: high fluid pressure range limit, can be arbitrary installation ( Need to customize) But fluid differential pressure conditions must be met. PARKER, PARKER solenoid valve troubleshooting solenoid valve failure will directly affect the switching valve and control valve, common fault electromagnetic valve is not action, screening from the following several aspects: one, PARKER PARKER solenoid valve does not work check the power supply after the power supply wiring whether bad - > new connectors and wiring connection; Check whether the power supply voltage is in range - plus or minus work To adjust to a normal position; Whether coil desoldering and welding; Coil circuit to replace the coil; Working pressure difference is not appropriate to adjust the differential, or change of proportion of electromagnetic valve; Fluid temperature is too high and change of proportion of electromagnetic valve; Have impurities to make electromagnetic valve of the main valve core and the moving core card dead - cleaning, such as sealing damaged seal and install the filter should be changed; Liquid viscosity is too large, the frequency is too high and life and have to exchange products. Second, PARKER PARKER solenoid valve can not close the main valve core or moving iron core of seal is damaged, replace the seal; Fluid temperature, viscosity is too high to replace of the electromagnetic Industrial Valves; Are valve core production impurities into the solenoid valve or moving iron core and cleaning; Spring had come to life or deformation and replacement; Orifice balance hole blockage and timely cleaning; Working frequency is too high, or life and have to re-election products or product update. Third, other internal leakage - check whether the seal is damaged, the spring is bad assembly; External leakage to joint looseness or seal has been bad, screw or replace the seal; Electricity from time to tome noise and strong leader a loose, tighten. Voltage fluctuation is not allowed within the scope of adjust voltage. Core surface impurities or uneven absorption, clean or replace in a timely manner. Key words: American PARKER solenoid valve American PARKER solenoid valve fault maintenance
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