Описание: Describes the double check-valve backflow prevention assembly for potable water applications. The assembly shall be capable of withstanding a working water pressure of at least 150 psi (1,034 kPa) without damage to working parts or impairment of function and for operation on hot or cold potable water lines.
Описание: This manual offers current and practical approaches to nitrification prevention and response to a nitrification episode in chloraminated drinking water distribution systems.
Описание: Describes electric motor actuators for valves and slide gates in water, wastewater, and reclaimed water utility systems. Electric motor actuators are designed to produce a multiturn rotary motion output to actuate a multiturn valve or gate or to actuate an external gearhead for quarter-turn valves.
Описание: Describes hydraulic and pneumatic linear and quarter-turn actuators for operation of valves and slide gates in utility systems. The standard defines the minimum requirements for hydraulic and pneumatic actuators, such as sizing considerations, general design, materials, applications, painting and coatings, and data to be furnished by manufacturer.
Описание: Describes resilient-seated cast-iron eccentric plug valves, 3 in. (75 mm) through 72 in. (1,800 mm) in diameter, with flanged, grooved, or mechanical-joint ends, for water, wastewater, and reclaimed water systems having a pH range from 6 to 12 and a temperature range from 33F to 125F.
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