FAQ-Product
In the compressed air network, the operating pressure is usually between 6...10 bar, whereby the value can vary depending on the air consumption.
In order to achieve efficient use of compressed air, the pressure must be adjusted according to the need. This value depends on the optimal operating pressure of the respective pneumatic application and is lower than the mains pressure. It is optimal if the compressed air is only reduced to the optimum operating pressure at the place of use.
The task of the pressure control valve is to keep the outlet pressure (secondary pressure) at a constant value, regardless of the inlet pressure (primary pressure) and also in the event of fluctuations in air consumption.
We distinguish between pressure regulators with (type DM14+15) and without secondary ventilation. Pressure regulators with secondary venting can release overpressure on the output side. This can happen if the pressure is increased by the application or the pressure is lowered.
Pressure regulators without secondary venting do not have this function. These controllers are often used when the medium is not allowed to escape into the environment.
KVS pressure reducers always refer to water.
For pressure reducing valves (DM01 to DM08 & DM14/15), delivery is carried out with presetting in the lower pressure range. At (DM09 to DM13 & DM16/17) always with completely relieved spring, i.e. in the upper pressure range.
In the case of pressure reducing valve, fluctuating pre-pressures have no influence on the set back pressure. These fluctuations are compensated for by the special geometry of the pressure reducing valve.
Insofar as pressure reducing valves are supplied without presetting, the built-in compression spring is in the relieved state. This means that the pressure reducing valve begins with its control function below the lowest indicated back pressure. The respective reduction ratio must be taken into account.
The membrane-operated pressure reducing valve is frequently used in applications with low to normal back pressure. Due to the membrane, it also delivers more sensitive regulation.
The piston-operated pressure reducing valve is frequently used with high back pressures and aggressive media. It has an extremely robust design, giving it a high level of safety in case of pressure surges.
No. The control of a pressure reducing valve always refers to the resting pressure, i.e. the pressure at a closed customer. As soon as the receiver is opened, the pressure first decreases and is then lower than the pressure set at the pressure reducer due to the outflowing medium.
Secondary ventilation is an additional bore, usually in the spring hood of the pressure reducing valve. In the case of pressure reducing valve with secondary ventilation, the back pressure can also be lowered at zero consumption, i.e. when the customer is closed. When the pressure is lowered, the medium escapes through the said hole into the open air. It is therefore advisable to use pressure reducing valve with secondary ventilation only for neutral gases such as compressed air.
The reduction ratio indicates the maximum ratio of inlet and back pressure that can be reduced by a pressure reducer in one stage. Each of our pressure reducer types has a maximum reduction ratio, but different by type. This must be considered individually depending on the pressure reducer. Please send us your inquiry.
Series DM01-04, connection size thread of the body in the version male thread with throw-over grommets.
--> always a nominal diameter Greater than connection male thread, except for DN50, where it is a 2 3/8 inch male thread
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