What is "straight-way valve"

Straight \Straight\, a. [Compar. Straighter; superl. Straightest.] [OE. strei?t, properly p. p. of strecchen to stretch, AS. streht, p. p. of streccan to stretch, to extend. See Stretch.]

1. Right, in a mathematical sense; passing from one point to another by the nearest course; direct; not deviating or crooked; as, a straight line or course; a straight piece of timber.

   And the crooked shall be made straight.
   --Isa. xl. 4.

   There are many several sorts of crooked lines, but there is only one which is straight.
   --Dryden.

2. (Bot.) Approximately straight; not much curved; as, straight ribs are such as pass from the base of a leaf to the apex, with a small curve.

3. (Card Playing) Composed of cards which constitute a regular sequence, as the ace, king, queen, jack, and ten-spot; as, a straight hand; a straight flush.

4. Conforming to justice and rectitude; not deviating from truth or fairness; upright; as, straight dealing.

5. Unmixed; undiluted; as, to take liquor straight. [Slang]

6. Making no exceptions or deviations in one's support of the organization and candidates of a political party; as, a straight Republican; a straight Democrat; also, containing the names of all the regularly nominated candidates of a party and no others; as, a straight ballot. [Political Cant, U.S.]

   Straight arch (Arch.), a form of arch in which the intrados is straight, but with its joints drawn radially, as in a common arch.

   A straight face, one giving no evidence of merriment or other emotion.

   A straight line. ``That which lies evenly between its extreme points.''
   --Euclid. ``The shortest line between two points.''
   --Chauvenet. ``A line which has the same direction through its whole length.''
   --Newcomb.

   Straight-way valve, a valve which, when opened widely, affords a straight passageway, as for water.