Excerpt from New England Railroad Club: January 12, 1904 The chief advantages claimed for the piston valve are usually that it is better balanced, and that there is less wear and tear on the motion work than with the slide valve. While the piston valve may be better balanced than most types of slide valves, yet the American high-pressure balanced valve is probably better or at least is as well balanced as any type of piston valve. I will say more about this valve shortly. Now, taking up the slide valve, we find that ever since its introduction various attempts have been made to balance the valve, thus reducing the pressure of the steam on the valve seat, which causes excessive friction and wear. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.