Temperature and pressure changes load the boundary
- Pressure cycling
Successive pressure changes load the interfaces repeatedly. State range, rate, dwell and cycle count for the intended duty.
- Pressure compensation
The device reduces pressure differences by its specified method. Check its response, capacity and environmental conditions.
- Differential pressureThis term
The difference between the two pressures loads the seal or membrane. Specify sign, reference points and operating range.
- Thermal breathing
Heating and cooling change the enclosed gas pressure. Exchange can also bring moisture into the enclosure over repeated cycles.
Pressure inside and outside an enclosure can vary with temperature or system operation. A vent, seal or compensation device responds according to its specified function and capacity.
Qualitative curves and gas paths without flow values. A static water or leak test does not establish pressure-cycling endurance.