Media properties:
1, gaseous, liquid or mixed states were selected different varieties of dispersing machine, for example ZQDF air, ZQDF-Y for liquid, ZQDF-2 (or -3) for steam, or easily cause malfunction. ZDF series multifunction dispersing machine may be all in the gas or liquid. When the state media report the best set, users will not have to install tuning.
2, medium temperature products with different specifications, otherwise the coil will burn, seals aging, seriously affecting life.
3, medium viscosity, usually 50cSt less. If it exceeds this value, with a diameter greater than 15mm ZDF series multifunction dispersing machine for special orders. Diameter less than 15mm high viscosity of the dispersion machine.
4 medium cleanliness is not high before dispersing machine should be equipped with recoil filter valve, low pressure fashion can choose straight diaphragm disperser for example CD-P.
5. If the directional flow of the medium, and not allowed back ZDF-N and ZQDF-N single-required two-way flow, please make a special request.
6, the medium temperature should be chosen in a dispersing machine within the allowable range.
Pipeline parameters:
1, under medium flow pipe connection requirements and valve openings and model selection. For example, for a pipeline to two pipeline switching, small diameter of the election CA5 and Z3F, medium or large diameter Please select ZDF-Z1 / 2. Another example is the control of two pipelines converge, please choose ZDF-Z2 / 1 and so on.
2. The flow rate and valve Kv value selected nominal diameter, also optional with pipe diameter. Please note that some manufacturers are not marked with the Kv value, often less than the interface valve hole size diameter, must not seek the lowest and makes a botch.
3 Working pressure Minimum working pressure at 0.04Mpa above is optional indirect Pilot; minimum working pressure close to or less than zero must be selected or step direct-acting direct style.
Environmental conditions:
1, the maximum and minimum temperatures should be selected within the allowable range, if tolerance required for special orders made.
2, the environment of high relative humidity and a drop of rain and so on, should be selected water disperser.
3, environment, often vibration, bumps and shocks occasion should choose special varieties such as marine dispersion machine.
4, in a corrosive or explosive environment should be given priority in accordance with security requirements corrosion-resistant.
5. If the restricted environment of space, please use the multi-functional dispersing machine, because eliminating the bypass and three manual valves and easy online service.
Power requirements:
1, according to the type of power supply, AC and DC were selected dispersing machine. Generally easy access to AC power.
2, the voltage specification with the best preferred AC380V, AC220V, DC24V.
3, the power supply voltage fluctuations are usually used% 10% + - 15%, DC to allow ±% 10 or so, should the ultra poor, regulators should take measures or make a special order request.
4, should be selected according to the rated current and power consumption power capacity. VA should be noted that the exchange value of starting high, lack of capacity should be preferred indirect conductivity type dispersing machine.
