Our pressure control valves made from PVC, PP or PVDF (other materials available on request) reduce system pressure to a specified level and are available with a nominal diameter of DN10 to DN100. By utilizing the differential pressure, the pressure regulator adjusts to the set operating pressure. The outlet pressure is not directly related to the inlet pressure. The output point acts on the diaphragm surface via a control bore and presses against the set spring force. Once the forces are balanced, the valve closes and therefore keeps the operating pressure constant. If the pressure on the output side drops, it means that the set spring force is greater, in which case the valve opens until the forces are once again balanced.
Pressure retention valves are generally used where a constant pressure needs to be maintained in a system. The valve controls the upstream pressure to the set target value. The set spring force presses the piston on to the seal seat. If the system pressure exceeds the value of the operating pressure, the valve opens.
Overflow valves protect pipe systems from overpressure and pressure peaks. There is only minimal pressure loss in the channel on account of the streamlined design of the bottom section with virtually zero dead space. The set spring force presses the diaphragm on to the seal seat. If the system pressure exceeds the value of the operating pressure, the valve opens.
Our flow meters operate on the variable area (rotameter) principle and are used to measure the flow rates in closed pipes. The medium flows through the flow meter vertically; as a result, the float is lifted and shows the flow rate on the attached scale. The reading edge corresponds to the largest diameter of the float.
Our flow meters come equipped as standard with a scale for water (scales for many other media can be supplied) and 2 mechanical target value indicators (electronic transmitters can be supplied).
Röchling Medical Waldachtal AG supplies special fittings such as