Installing The Valve Manifolds; Installing The Lateral Lines - Hunter Sprinkler System Design Handbook

Installing the Valve Manifolds

1. Refer to the valve manifold detail on the Sprinkler System
Overview.
2. Maintain at least a 15 cm clearance between valves for
future maintenance.
3. Provide a 8 cm long or longer capped stub-out for future
additions.
4. Install the valve manifolds onto the main line.
5. Installing the valve boxes is discussed on page 12.

Installing the Lateral Lines

If you can only devote a day or two at a time to installing
this system, and the installation is in an area that is currently
landscaped, lay out all zones and install one zone at a time using
the following steps:
1. Lay Out System: Using the plot plan and small sprinkler
flags, mark the location of the sprinklers and their zone
valve. Make adjustments as necessary for complete
head-to-head coverage. If it appears that you will need to
revise the plan (add a head), recheck the l/min numbers
to make sure you are within the system's design capacity.
(See page 5.) Recheck the Pipe Sizing Chart to make sure
the change will not affect the pipe sizes designated. (See
page 6.)
2. Using marking spray paint, mark the locations for the
lateral lines.
3. Trenching: Check local codes. If there are no established
codes for sprinkler lateral line depth in your area, dig the
trenches 15 cm to 20 cm deep. If you are installing poly
pipe, you may want to use a pipe puller.
4. Installing Pipe: Lay out pipe and fittings at the side of the
trenches according to how they will be installed.
Be careful not to get dirt and debris inside the pipe.
5. Backfilling the lateral line is discussed on page 12.
Most professional installers recommend
PVC pipe for the constant pressure line
from the backflow preventer to the zone
control valves. Some communities require
copper, however. Check local ordinances
before laying out your system.
System installation
TIPS
11
Assembling PVC: 1. Place
solvent on inside of fitting
and outside of pipe.
Assembling Poly Pipe:
1. Place clamp over pipe,
then insert barb fitting.
Lay out the pipes and sprinklers near the trenches
where they will be installed.
Automatic Drain Valve Installation for Freezing Climates:
Locate the drain valves at the low points in each zone.
PVC: 2. Slip pipe into fitting
and wipe off excess solvent.
Poly Pipe: 2. Tighten clamp
around pipe and fitting.