Hubbell Industrial Controls D20909001 Pulsation Orifice

The Hubbell Industrial Controls D20909001 Pulsation Orifice is a small flow-restricting insert part used in pressure sensing and control circuits within industrial and fluid units in HVAC systems. It is used in pressure switch assemblies, where it limits and smooths fast pressure fluctuations before they reach the sensing diaphragm. It is used in water pumping systems, compressors, and controls. It helps prevent false triggering of pressure switches caused by short pressure increases or vibration in the line. It operates as a damping element integrated into the pressure switch inlet, improving the measuring stability of the unit.