AWWA C800:2012 pdf download.Underground Service Line Valves and Fittings
4.3.12 Service line fittings. Te fittings used in service lines shall be designed for connection to the service line by threads, brazing, compression, or flaring. Small waterways and abrupt corners causing water turbulence and pressure drop should be minimized.
4.3.13 Service line check valves. Check valves may be of an angle design or straight-through design, with good fluid-flow characteristics. Te spring shall be strong enough to resist opening with a 1-psi pressure in the direction of flow. Te check valve shall be field repairable without removing the valve body from the service line.
4.3.14 Meter setters. Meter setters can be of various designs. Tey nor- mally include copper tubing soldered to a machined brass casting. Te tubing is bent to various configurations to accommodate the described height and position of the meter it is to hold. Te machined brass casting shall have its inlet machined to attach to the service line by compression, flare, multipurpose, or iron pipe thread connections. A similar selection of connections shall be provided on the outlet of the machined brass casting. Te connection to the meter is provided by meter nuts, meter flanges, meter valves, or check valves attached to the copper tube portion of the meter setter. Te meter setter shall have a spacing provided to accommodate the meter lengths listed in Table 10 or 11.
4.4.4.4 In gauging standard AWWA and NPT thread for corporation stop inlet threads or service saddle outlet threads, the thread is within tolerances when the gauge is within one full turn in either direction of the extreme end or face of the inlet of the stop or service saddle, except as provided in Sec. 4.4.4.6.
The selection of materials is critical for potable water, wastewater, and reclaimed water service and distribution piping in locations where there is likeli- hood the pipe will be exposed to significant concentrations of pollutants composed of low-molecular-weight petroleum products or organic solvents or their vapors. Documented research has shown that pipe materials (such as polyethylene and polyvinyl chloride) and elastomers, such as those used in jointing gaskets and pack- ing glands, are subject to permeation by low-molecular-weight organic solvents or petroleum products. If a potable water, wastewater, or reclaimed water pipe must pass through such a contaminated area or an area subject to contamination, con- sult with the manufacturer regarding permeation of pipe walls, jointing material, and so on, before selecting materials for use in that area.AWWA C800 pdf download.