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Steam-cock.

A valve or faucet in a steampipe.

In Fig. 5649, A is a gland stop-cock; B, a stop-cock with flanges, by which it is attached to tanks, chests, or boilers.

Fig. 5650 is a globe steam-valve, so constructed as to facilitate the grinding of a globe-valve down in its seat, the nut and stuffing-box for the valve-stem being made of one piece, or rigidly connected as usual; the nut, instead of being provided on its outer surface with a screw-thread, is turned off smooth, and fitted in the socket of the shell, where it is held by a cap, the relaxation of which cap permits the nut to revolve, with the stem, to grind the valve to its seat.

Steam-valves.

Globe-Vave.

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