 | Power - 1897 - 252 pages
...many square feet of grate surface are allowed per square inch of area with spring loaded safety-valves constructed so as to give an increased lift by the operation of steam? A.— Three. Q. 452 — What is the best method of determining the size of safety-valve required for... | |
 | William Miller Barr - 1898 - 430 pages
...situations in which several boilers deliver the steam into a common reservoir. Spring-loaded safety-valves, constructed so as to give an increased lift by the operation of steam, after the valve is raised from its seat, shall be required, according to the United States Regulations, to... | |
 | Nehemiah Hawkins - 1900 - 358 pages
...shall also apply to lock-up safety valves when they are employed. " Any spring,loaded safety valves constructed so as to give an increased lift by the operation of steam, after being raised from their •seats, or any spring,loaded safety valve constructed in any other manner, or so as to give... | |
 | International Correspondence Schools - 1900 - 612 pages
...feet of grate surface of the boiler to which the valve is attached. For spring-loaded safety valves constructed so as to give an increased lift by the operation of steam after being raised from their seats, or any spring-loaded safety valve constructed in any other manner, or so as to give an... | |
 | William Frederick Durand - 1901 - 736 pages
...arrangement shall also apply to lock-up safety valves when they are employed. Any spring-loaded safety valves constructed so as to give an increased lift by the operation of steam, after being raised from their seats, or any spring-loaded safety valve constructed in any other manner so as to giye an effective... | |
 | Heine Safety Boiler Company - 1902 - 178 pages
...shall also apply to lock-up safety valves when they are employed. "Any spring-loaded safety valves constructed so as to give an increased lift by the operation of steam, after being raised from their seats, or any spring-loaded safety valve constructed in any other manner, or so as to give an... | |
 | 1902 - 582 pages
...shall have a separate safety valve. Spring loaded safety valves of the " pop " type, that is, those constructed so as to give an increased lift by the operation of steam after being raised from their seats, shall have an area of not less than one square inch to three square feet of grate surface.... | |
 | International Correspondence Schools - 1902 - 714 pages
...feet of grate surface of the boiler to which the valve is attached. For spring-loaded safety valves constructed so as to give an increased lift by the operation of steam after being raised from their seats, or any spring-loaded safety valve constructed in any other manner, or so as to give an... | |
 | American School (Chicago, Ill.) - 1903 - 510 pages
...shall have a separate safety valve. Spring loaded safety valves of the " pop " type, that is, those constructed so as to give an increased lift by the operation of steam after being raised from their seats, shall have an area of not less than one square inch to three square feet of grate surface.... | |
 | F. R. Low - 1903 - 256 pages
...square feet 'of grate surface are allowed per square inch of area with spring loaded safety-valves constructed so as to give an increased lift by the operation of steam? A.— Three. Q. 452 — What is the best method of determining the size of safety-valve required for... | |
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... so as to give an effective area equal to that of the aforementioned spring-loaded safety valve, may be used in lieu of the common lever-weighted... 
