This standard describes vertically mounted, fabricated stainless-steel slide gates with full aperture closure, designed for either seating or unseating head, or both, in ordinary water supply and wastewater service. The gates are primarily used to shut off or throttle water or wastewater flow through a rectangular or round orifice, end of channel, or in-channel opening.
Major revisions made to the standard in this edition include:
1. The stem factor calculation, used to convert actuator nut torque to stem thrust, was included.
2. Guidance was provided for determining minimum coefficients of static friction for lubricated and extreme.
3. Stem threads which generate motion were further defined to include metric DIN 103.
