Black Seal Test | complete questions and 100% verified answers

Black Seal Test | complete questions and 100% verified answers What does PSIA stand for? Psig + atmospheric pressure Carryover can lead to: Water Hammer Water column & gauge glass should be blown down: Daily If water leaves the boiler at 170•, what temperature does it return at? 150• What is the most common cause of cast iron boiler failure? Cracking The positioning control cannot function without: Air What is the most common of problems in a hot water system? Air What fire tube is most efficient? 4 Pass Where are the combustion gases on a serpentine boiler? Below the tubes What is the purpose of a check valve? To Prevent reverse flow & Allow flow in one direction A solenoid valve: Is an automatic gas shutoff valve The most common type of pressure control device used is the: Mercury Tube A steam gauge is calibrated in: Lbs/Sq. Inch Heavy soot on the fireside of tubes: Should be removed for better heat transfer What code is a heating boiler built to: ASME Section IV(4) When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to: Protect Bourdon tube from steam External feed water treatment can be a _____ process. Cold lime soda, hot lime soda, or ion exchange Natural water may contain: Solids and other pollutions What is the min. temp of a hot water boiler operation to