First, the characteristics of the solenoid valve 1 gas, liquid or mixed state were selected different types of solenoid valves, such as ZQDF for air, ZQDF-Y for liquid, ZQDF-2 (or -3) for steam, or easily cause Misoperation. ZDF series of multi-function solenoid valve is available in the gas. Liquid. The best time to state the media state, the installation users do not have to adjust. 2 different temperature medium products, or the coil will burn, aging seals, seriously affect the life of the life. 3 Medium viscosity, usually below 50cSt. If more than this value, diameter greater than 15mm with ZDF series of multi-function solenoid valve for special order. Path less than 15mm set high viscosity solenoid valve. 4 medium cleanliness is not high should be equipped with a recoil filter valve in front of the solenoid valve, low pressure fashion can choose direct acting diaphragm solenoid valve such as CD-P. 5 If the medium is directional flow, and do not allow reverse flow ZDF-N and ZQDF-N single flow in both directions, please make special requirements. 6 medium temperature should be selected within the allowable range of the solenoid valve. Pipeline parameters 1 According to the media flow requirements and pipeline connection options valve port and model. For example, the small diameter selection CA5 and Z3F for one pipe to two pipes, ZDF-Z1 / 2 for medium or large diameters. Another example is the control of the convergence of two pipelines, please choose ZDF-Z2 / 1. 2 According to the flow rate and the valve Kv value selected nominal diameter, but also optional with the pipe diameter. Please note that some manufacturers are not marked with Kv value, often the size of the valve hole is smaller than the interface diameter, must not be greedy price low and misleading. 3 working pressure minimum working pressure differential above 0.04Mpa is optional indirect pilot; minimum working pressure close to or less than zero must be used direct or step-by-step direct type. Three. Environmental conditions 1 The maximum and minimum temperature of the environment should be selected within the allowable range, if there is any special order made for tolerance. 2 environment, high relative humidity and rain drops and other occasions, the election should be waterproof solenoid valve. 3 environment often vibration, bump and impact occasions such as special varieties should be selected, such as marine electromagnetic valve. 4 In a corrosive or explosive environment should give priority to the use of corrosion-resistant selection according to safety requirements. 5 If the environmental space is limited, please use the multi-function solenoid valve, because it eliminates the need for bypass and three manual valves and easy on-line maintenance. Four. Power conditions 1 According to the type of power supply, were selected AC and DC solenoid valve. In general AC power access convenience. 2 voltage specifications exhausted preferred AC220V.DC24V. 3 power supply voltage fluctuations are usually used + 10% AC-10%, DC allows ±% 10 or so, if over-tolerance, voltage regulation measures must be taken or make special order requirements. 4 should be based on the power capacity of the rated current and power consumption. Should pay attention to AC starting VA value is higher, in the lack of capacity should be preferred indirect induction solenoid valve. V. Control accuracy 1 ordinary solenoid valve only open and close two positions, high precision control parameters and parameters require stable multi-position solenoid valve; Z3CF three normally open solenoid valve, with micro-Kai, fully open and closed three Kinds of flow; ZDF-Z1 / 1 combination of multi-function solenoid valve with full open, big open, small open, full open four flow. 2 Action time: refers to the electrical signal is turned on or off to the completion of the main valve action time, only the company patented product multi-function solenoid valve can be opened and closed separately adjusted not only to meet the control accuracy requirements, but also to prevent water hammer damage.
Euro fence is also called dutch mesh or wave welded mesh or holland Wire mesh. It can be made of
black mild steel wire or galvanized wire, quality welded on each joint point, PVC PE or PP powder coated
the surface by sulfide treatment, with good adhesion, anticorrosion, flittering luster, etc. The surface
treatment also can be electro galvanized, hot dipped galvanized.normally used for highway, boundary, railway protection, etc.
Euro Fence
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