"The shower is bone dry," she called back from the bedroom. "And I have a meeting in forty minutes."
He tried the hot tap. Same result. A ghostly wheeze, a shudder, and nothing. airlock in plumbing system
Gurgle.
"The shower?" Sarah asked, looking at his drenched clothes. "The shower is bone dry," she called back from the bedroom
"Arthur?" Sarah called. "I heard a bang. Is everything okay?" "The shower is bone dry
: Pipes with many dips and rises (peaks) provide perfect "traps" where air naturally rises and collects. How to Identify an Airlock