AWWA C509-09 Resilient-Seated Gate Valves for Water Supply Service
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AWWA C509-09 Resilient-Seated Gate Valves for Water Supply Service

AWWA C509-09 Resilient-Seated Gate Valves for Water Supply Service

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Publisher: AWWA
Publication date: 2009
AWWA catalog no: STC_0070921
Media Type: PDF, Print
Number of pages: 42
DOI: https://doi.org/10.12999/AWWA.C509.09
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 33º-125ºF (0.6º- 52ºC). These valves are intended for applications where fluid velocity does not exceed 16 ft/sec when the valve is in full open position. Major revisions made to the standard in this edition include the following: editorial changes to conform to current AWWA form and content; addition of reduced-thickness ductile-iron flanges; addition of stainless-steel alloys for use as a stem material; permitting the use of nonintegral thrust collars for stems in NRS valves; addition of aluminum-bronze and silicon-bronze copper alloys; addition of 14-, 18-, and 36-in. valve sizes; addition of socket head and metric fasteners; requirement to use an antiseize compound with stainless-steel bolts and nuts; and, removal of maximum phosphorus content.
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Item Details:
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 33º-125ºF (0.6º- 52ºC). These valves are intended for...
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