Assertion: boiler's filling system | /r/CapableOf | maintain proper water level
Facets:
Source sentences:
text: The boiler's automatic filling system, controlled by the pressure-reducing valve, should maintain the proper water level at 12 to 15 psi of pressure.
text: The boiler's automatic filling system, controlled by the pressure-reducing valve, should maintain the proper water level at 12 to 15 psi of pressure.