QUICK REFERENCE - Waterman Industries

SELF-CONTAINEDSERIES 5000AND 7000SLUICE GATESSelf-contained gates are used when space above thegate installation, or the absence of structural supports,limits the installation of an independent operator.Waterman self-contained gates are available in sizesup to 84" x 84" with standard cast yokes, and largersizes with heavy duty fabricated yokes. Heavy dutycast iron yokes are attached to the machined pads onthe gate guides. An extension of the guide providesclearance for the slide to move to the completely openposition. A machined pad on the yoke provides a truesurface for mounting the thrust collar or lift.Self-contained gates may be furnished with risingstems, in which case the stem is secured to a standardslide thrust nut in the normal manner, and operated bya corrosion resistant stem and standard handwheel orcrank type lift. The thrust of opening and closing istransmitted directly through the lift and yoke to thegate. Self-contained gates with non-rising stemsutilize the non-rising stem (NRS) type cover arrangementand a stem having a thrust collar, contained in ahousing on the yoke. Rotating the stem causes thestem block and slide to travel up and down. Theoperating thrust is transmitted directly to the yoke andgate frame.Ball bearing lifts are not recommended for mounting ontop of a self-contained yoke where the lift would besubject to submergence in the liquid being controlled.Special self-contained units with hydraulic cylinderoperators or motorized lifts are available.Non-Rising stems are not recommended for use influids with heavy slurry concentrations as threadedportions of stem may be submerged. Prematurewear may result.Industries6