This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ... Belleville separator is also drained automatically. The float is inside the chamber, and the valves outside. It lias the advantage of being easily detachable for repair or refit. Emergency Valve.---In cases of extreme urgency the inter mediate valve cannot usually be closed with sullicient quickness, and in all recent ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ... Belleville separator is also drained automatically. The float is inside the chamber, and the valves outside. It lias the advantage of being easily detachable for repair or refit. Emergency Valve.---In cases of extreme urgency the inter mediate valve cannot usually be closed with sullicient quickness, and in all recent naval vessels a quick-closing valve is fitted between the intermediate valve and the regulating valve. A type of quick-closing valve is shown in Fig. 216, and consists of a nearly circular disc, A, which, when turned into certain position, either leaves an almost uninterrupted opening, or, as shown in the figure, entirely closes the passage-way. The valve can be worked from the engine-room platform and from outside the engine room, and under ordinary conditions is always wide open. The spindle of the valve withstands the total pressure on the valve when closed, and is consequently a substantial fitting; and for the same reason the valve is strengthened by webs, as shown. Regulating and Manoeuvring Valves.--Steam is admitted to the engine either through the regulating valve; or, when only low powers are in use, through a smaller valve, called the manoeuvring valve, which is fitted alongside the former, and performs a ' similar office. The diameter of the smaller valve is generally about onefourth to one-fifth that of the main regulating valve, and is suitable for powers up to about one-third full power. The ordinary valve, with the steam pressing it on to its seating, cannot be opened easily. In modern ships, where the diameter of the valve is from 15 to 20 inches, the total pressure on it is many tons, and consequently a balanced valve is now generally used in conjunction with high pressures and large powers. The balanced valve allows the eng...
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Add this copy of Marine Engineering: (A Text-Book) to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
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