Chemicals / process liquids
Wastewater / effluent
Pressure relief valves
V182 and V82 valves reduce the pressure within a system to a pre-set value. By using differential pressure, the valve adjusts itself to the set working pressure. They are used in microelectronics, measurement and control, the chemical process industry and in water treatment.
The outlet pressure (working pressure) is not directly related to the inlet pressure. If the outlet pressure increases or decreases above or below the desired value, the diaphragm is lifted against the spring force or pressed down by the spring force, by the outlet pressure.
The valve begins to close or open until a state of equilibrium is re-established. The outlet pressure remains constant irrespective of an increasing or decreasing inlet pressure.
All parts which come into contact with the medium are made of highly resistant plastics. The actuator is separated and hermetically sealed from the flow section by the control diaphragm. The valve has small standard tolerances, due to the large control surface and the spiral spring.
No auxiliary energy is required to operate the valve, which is largely maintenance-free and installable in any position. It can also be adjusted under working pressure.