Assertion: boiler | /r/HasProperty | low-pressure boilers
Facets:
value: on water
type: LOCATION
value: extremely
type: DEGREE
Source sentences:
text: These boilers may be high-pressure or low-pressure boilers.
text: In a vertical boiler, the water is all sitting on the top of the firebox, and the boiler would need to be extremely low on water before a gradient could cause a risk by uncovering the firebox top.
text: Boiler are considered low pressure when: A. Steam boiler are not over 15 psi and liquid boiler are not over 160 psi and 250 deg
text: Most boilers used in HVAC applications are low-pressure boilers.