 | John Weeks Johnson - 1905 - 150 σελίδες
...submerge the end of the pet cock in cup of hot water solution. A vacuum is at once created in the gauge glass which causes the solution in the cup to rush...alternately expelling and drawing in the solution until ail grease, oil, or other matter adhering to the inside of the glass is cut out. Then close pet cock... | |
 | John Weeks Johnson - 1913 - 376 σελίδες
...submerge the end of the pet cock in cup of hot water solution. A vacuum is at once created in the gauge glass which causes the solution in the cup to rush...Keep the pet cock immersed and operate the top valve, •lightly opening and closing, alternately expelling and drawHeating Surface. Sq.Ft. Area of Cold... | |
 | American Oil Burner Association - 1928 - 396 σελίδες
...end of pet cock in cup of hot-water solution. A vacuum is at once created in gauge glass which causes solution in the cup to rush in. 4. Keep the pet cock...glass is cut out. Then close pet cock and open both water-gauge valves. It is necessary to have I Ib. pressure of steam or more on the boiler before commencing... | |
 | American Radiator Company - 1925 - 350 σελίδες
...end of pet cock in cup of hot-water solution. A vacuum is at once created in gage glass which causes solution in the cup to rush in. 4. Keep the pet cock...Then close pet cock and open both water,gage valves.- ' > I It is necessary to have 1 Ib. pressure of steam or mor,e on the boiler before commencing this... | |
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Then immediately close the top valve and submerge the end of the pet cock in cup of hot-water solution. A vacuum is at once created in the gauge glass which causes the solution in the cup to rush in. 4. Keep the pet cock immersed and operate the top valve,... 