quarter-turn

quarter-turn

Descriptive of a stair which, in its progress from top to bottom, turns 90°.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Isleworth, United Kingdom, May 17, 2019 --(PR.com)-- Enclosure hardware specialist FDB have introduced a very neat DIRAK accessory which greatly aids protection of quarter-turn locks.
The IQ actuators are combined with Rotork Gears IB multi-turn and IW quarter-turn secondary gearboxes to meet the operating demands of the wide range of valve sizes and types.
Quarter-Turn Valves: Head Loss, Torque, and Cavitation Analysis, 3rd Edition
The standard operating pressure range is 10-105 barg (145-1,500 psig), enabling a quarter-turn operating torque of up to 600,000 Nm and linear thrust of 5 million N.
The best way to deal with bad valves is to replace them with modern quarter-turn ball valves.
McLaughlin offers two options in its Vermeer Hole Hammer piercing tool line--a positive-turn reverse design and air-on quarter-turn reverse.
The global industrial valves and actuators market is witnessing the adoption of quarter-turn valves.
The quarter-turn version attaches to any type of lever-operated valve, including ball, butterfly and plug valves; the multi-turn attaches directly to valves including those that are gate, globe and gear-operated.
They incorporate a quarter-turn design that is commonly used in blood pressure applications, particularly blood pressure cuffs.
With just a quarter-turn the B-Lock forend cap pops off, allowing total takedown in seconds.