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  • AWWA
    AWWA C509-15 Resilient-Seated Gate Valves for Water Supply Service
    Edition: 2015
    $151.20
    / user per year

Content Description

This standard describes iron-body resilient-seated gate valves with nonrising stems (NRS) and outside screw-and-yoke (OS&Y) rising stems, including tapping gate valves, for water supply service having a temperature range of 33° to 125°F (0.6° to 52°C). These valves are intended for applications where fluid velocity does not exceed 16 ft/sec (4.9 m/sec) when the valve is in the full-open position. Gate valves described by this standard are 3-in. (75-mm) through 36-in. (900-mm) nominal pipe size (NPS). The minimum design working water pressure shall be 200 psig (1,380 kPa [gauge]) for 3- through 12-in. (75- through 300-mm) sizes and 150 psig (1,034 kPa [gauge]) for 14- through 36-in. (350- through 900-mm) sizes. This standard is not intended to describe special conditions of gate valve installation or operation, such as built-in power drive, installation in unusually corrosive soil, conveyance of unusually corrosive water, excessive water hammer, frequent operation (as in filter service), or operation in a throttled position. These conditions are beyond the intended scope of this standard and require special consideration in design and construction. Joint accessories for end connections, such as bolts, gaskets, glands, and follower rings, are not described in this standard.

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About AWWA

Established in 1881, the American Water Works Association is the oldest and largest nonprofit, scientific and educational organization dedicated to safe and sustainable water in the world. With more than 50,000 members worldwide and 43 Sections in North America, AWWA advances public health, safety and welfare by uniting the efforts of the entire water community. AWWA Offers education to water professionals Advocates for safe and sustainable water Collects and share knowledge Creates volunteering opportunities

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