Gate valves shall be designated for a minimum working pressure of not less than 150 PSI or the minimum PSI available on site, whichever is greater. If designing to site pressure, indicate the minimum PSI available on the irrigation plan.
Quick coupling valves shall be installed on the mainline a minimum of every one hundred (100) feet. Quick coupling valves shall be of red brass with a wall thickness guaranteed to withstand normal working pressure of 150 PSI without leakage.
Valves shall be Rainbird EFA-CP series or equal.
Valve boxes for all gate valves and quick coupling valves shall be 9" x 24" round box, Brooks #9 or approved equal.
Valve boxes for all electric control valves shall be 12"x 18" rectangular box, Carson Industries or approved equal.
Wire shall occupy the same trench and shall be installed along the same route as the pressure supply lines whenever possible. When more than one wire is placed in a trench, the wiring shall be taped together at intervals of ten feet.
Wire connections shall be made using Scotch Lok Unipack waterproof sealing packets, Pentite connectors, or an approved equal. Size expansion loops of twelve inches shall be provided at each wire connection and/or directional turn. Use one splice per connector sealing pack.
Sizing of wire shall be according to manufacturer's recommendations, but not smaller than 14 gauge in size.
Use continuous wire between remote control valves and the controller/timer. All wire of exposed runs to be in conduit.
All control wire shall be black in color. All ground wire (14 g) shall be white in color.
VI-9