ANSI AWWA C800-14 pdf free download – Underground Service Line Valves and Fittings
4.3.7 Main size versus outlet size. Service saddles with a 2-in. (50.8-mm) outlet shall not be used on a 2-in. (50.8-mm) main.
4.3.8 Pipe materials. Service saddles are designed for use on a variety of pipe materials. Purchasers should consult the pipe and saddle manufacturers’ guidelines for recommendations on service saddles that are to be used on specifc pipe materials.
4.3.9 Component parts. Component parts of service saddles shall be designed to minimize galvanic corrosion. Te purchaser must specify materials that are properly suited to perform well in local soil conditions.
4.3.10 Straps. Straps for service saddles shall be designed so that the width and material is compatible with the pipe application.
4.3.11 Seals. Te seals used with service saddles shall be attached to the outlet portion prior to shipment in a ready-to-use condition. Seal materials shall be suitable for the intended purpose and water supply service with pH ranging from 5.5 to 10.
4.3.12 Service line fttings. Te fttings used in service lines shall be designed for connection to the service line by threads, brazing, compression, or faring. 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 fuid-fow characteristics. Te spring shall be strong enough to resist opening with a 1-psi pressure in the direction of fow. Te check valve shall be feld 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 confgurations 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, fare, 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 fanges, 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.
Te 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 signifcant 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.