City of Frisco Engineering Standards

2.03 PIPE FITTINGS:
A. PVC Sch. 40, as manufactured by the Lasco Company, or approved equal.
B. All PVC fittings shall be of the same material as the PVC pipe specified and be compatible
with the PVC pipe furnished.
C. Use only solvent recommended by the manufacturer of the PVC pipe and the manufacturer of
the PVC fittings.
2.04 COPPER PIPE AND FITTINGS:
A. Pipe: Type "M", hard, straight lengths, of standard size and dimensions.
B. Fittings: Cast brass or wrought copper sweat-solder type.
2.05 VALVE WIRING:
A. Single conductor copper type UF wire with 4/64 in. vinyl insulation U.L. approved for direct
underground burial in 30 volt AC or less service.
B. Valve wiring to controllers: Fourteen- (14) minimum (heavier if required based on length of
run).
C. Ground wiring from electric valves to controllers: Twelve- (12) gauge minimum (heavier if
required based on length of run)
2.06 FLEXIBLE PVC NIPPLES: Lawn heads: Nominal ½" x 12" long flexible PVC.
2.07 SWING JOINT ASSEMBLY: Nipples for fixed copper risers, nominal ½" x 4" long.
2.08 PVC NIPPLES:
A. High-Pop Shrub Head: ½” dia. Unitized O-Ring Assembly. Lasco #T5-32-212
B. Rotary Spray Head: ¾” dia. Unitized O-Ring Assembly. Lasco #T7-32-212
2.09 MATERIALS LIST: Refer to plans.
2.10 MAINLINE SHUT-OFF VALVES:
A. Four inch (4") and larger: Cast iron bodied, bronze fitted gate valves with gasket type pipe
connections and a 200 W.O.G. rating. Valve stems shall be fit with square operating nuts of
standard size. Manufacturer - Kennedy #597X or approved equal.
B. Three inch (3") and smaller: Plastic bodied, ball valves with threaded connections and an
ASTM standard F-1970 pressure rating. Manufacturer – Colonial TUBV or approved equal.
City of Frisco May 2012
Standard Technical Specification Irrigation System 328000-5