Mechanical Contracting & Plumbing January-December 1908 . Fig. 1.—Ground Key Cock. been found that sufficiently large pipeswiU be obtained, if the system is soproportioned that one fixture in eachgroup is supplied simultaneously. The maximum size pi))c employed tosupply any fixture is ?-inch diameter,^-inch diameter being the average size. Compression Faucet. Fig. 1 is a sectional view of a groundkey cock, which is also often used as astoji cock for controlling water in apipe. The plug B is inserted in the cockC and ground to a water tight fit. Thecock is operated by a quarter turn ofthe lever
Mechanical Contracting & Plumbing January-December 1908 . Fig. 1.—Ground Key Cock. been found that sufficiently large pipeswiU be obtained, if the system is soproportioned that one fixture in eachgroup is supplied simultaneously. The maximum size pi))c employed tosupply any fixture is ?-inch diameter,^-inch diameter being the average size. Compression Faucet. Fig. 1 is a sectional view of a groundkey cock, which is also often used as astoji cock for controlling water in apipe. The plug B is inserted in the cockC and ground to a water tight fit. Thecock is operated by a quarter turn ofthe lever A. The continual wearing of the plug andcock, whenever water is turned on oroff, thus causing the cock to leak, is oneof the great objections to this objection is further emphasized bythe fact that the leak can be remediedonly by regrinding the plug, an expen-sive and tedious operation. There is also another objection tothis type of cock, arising from thequickness witli which it shuts off thewater, which is apt to injure pipes andfixtures,
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