Do You Know in What Aspects the Advantages of Imported Normally Open Solenoid Valves Are Reflected?

As an imported type commonly used by many manufacturers, imported normally open solenoid valves are reflected in many devices. So compared with non-imported normally open solenoid valves, in what aspects are the advantages of imported ones reflected?

I. Scope of application

The liquid in the pipeline should match the corrected material in the selected solenoid valve series model; the oil temperature should be lower than the marked temperature of the selected solenoid valve; the fluid viscosity allowed by an ordinary solenoid valve is less than 20 CST, and those above 20 CST should be marked with their viscosity; when the working pressure difference and pipeline pressure difference are lower than 0.04 MPa, direct drive and step-by-step direct drive, ZS, 2W, ZQDF, and ZCM series — the liquid-use normally open solenoid valve — have a working pressure of 0.04 MPa or above; a control type (differential voltage) solenoid valve can be selected; the maximum working pressure difference must be smaller than the solenoid valve with a large marked pressure; an ordinary solenoid valve operates in one direction only, so pay attention to whether there is a reverse pressure difference, and if so, install a reverse valve; if the cleanliness of the liquid is low, a filter screen should be added in front of the solenoid valve, usually an electromagnetic type is used; specify the cleanliness of the valve medium; pay attention to the effect of ambient temperature on the solenoid valve; pay attention to the flow path and diameter of the nozzle; usually, a solenoid valve is only controlled by two switches; where conditions permit, install a bypass pipeline for convenient maintenance; when water hammer occurs, the opening and closing regulation of the solenoid valve needs to be customized.

II. Stability

The inlet of an SMC normally open solenoid valve is divided into normally open and normally open; the normally closed type is usually selected — energize to open, and the power is cut to close. However, if the opening time is long and the closing time is short, choose the normally open type. For life testing, manufacturers usually perform type testing; or rather, there is no dedicated solenoid valve domestically, so in general it is recommended to choose an imported solenoid valve, such as American MILLER, American ASCO, and German HERION, all of which have high international visibility.

III. Assurance

An ordinary imported solenoid valve has no waterproof function. An electrically controlled normally open solenoid valve should choose a waterproof type when conditions do not permit. The factory can produce according to the order.

A high-standard imported solenoid valve must exceed the high pressure in the pipeline, otherwise it will shorten the service life or cause other accidents. Corrosive liquids must use all-stainless steel; highly corrosive liquids should use SLF solenoid valves; for explosive environments, the corresponding explosion-proof product should be selected.