Germany BURKERT solenoid valves three classification and function

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  Food-grade stainless steel solenoid valve. 2, high-temperature fluids: To select a high-temperature electrical materials and sealing materials, electromagnetic solenoid operated valve , but also to select the piston structure type. 3, fluid status: gaseous, liquid or mixed state, in particular, is a diameter greater than DN25 order must separate. 4, the fluid viscosity: usually 50cSt the following arbitrary choice than this value will have to use the solenoid valve of the high viscosity.

      The pressure parameters of the principles and structure of species 1, Pressure: This parameter is the same as the meaning of other general purpose valves, according to the pipe nominal pressure to decide. Working pressure: if the low pressure must be selected direct action or step-by-step principle of direct action; minimum working pressure is acting the 0.04Mpa more than straight, step-by-step direct-acting, the pilot can be selected. Electrical voltage specification should be preferred AC220V, DC24 is more convenient. Continue to work the length of time normally closed, normally open, or sustainable power, if the open time or open the relevant time, then select normally closed type. 3, but some conditions for security protection, such as furnaces, kilns, flame monitoring, you can not select normally open, to be elected to the long-term power type. Environmental requirements to select the auxiliary function of explosion-proof, non-return, manual, water fog, water washout, diving

   An explosive environment: selection of the appropriate explosion-proof level of the three way position  (my company has: dIIBT4, dIICT5, ExmI/IIT4). 2, when the fluid inside back, you can choose my company OK71-N, OK72-N series with non-return function solenoid valve. 3, when the scene manual operation of the solenoid valve, you can choose my company OK71-S, OK72-S series with manual features solenoid valve. 4, open-air installation or dust more occasions should be us ed to waterproof, dust-proof varieties (protection class IP54 or more). 5, for the fountain must be submersible type solenoid valve (protection class IP68 and above). 1, normally open when the solenoid valve open for a long time, and duration of the excess time off should be used.