The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

Of the almost innumerable varieties of valves and cocks in use the following are selected as types without reference to special uses, each type having its peculiar value, and the drawings are only intended to indicate the special features of each type without such details as may be varied to suit each particular requirement or application.

[1611]. The common plug cock.

[1612]. The same, but with screwed gland.

[1613]. 2-way or 3-way plug cock, with packed gland.

[1614]. Hollow plug blow-off cock, with packed gland.

[1615]. Back pressure or check valve, self closing.

[1616]. Ball valve and guard, self closing.

[1617]. Indiarubber disc and grating valve.

[1618]. Double flap indiarubber or leather and grating valve.

[1619]. Simple flap valve faced with rubber or leather.