be removed by backing out the adjustment screw and
turning on the water, or by pulling outward on the nozzle
"ears" with a pair of needle-nosed pliers.
3. Slip the desired nozzle into the nozzle socket (Fig. 7).
Note that the socket is angled up 25˚. The "ears" should
be adjusted so that the nozzle range screw threads
directly down between them. Then tighten the nozzle
range screw. The raised bump with an arrow on the
rubber cover will always indicate the location of the
nozzle and direction of water flow when the sprinkler is
retracted.
ALIGNING THE RIGHT (FIXED) SIDE OF ARC
If the right side of the arc is not properly aligned, the
results may be a wet walkway or a dry turf area. The right
side arc can easily be realigned. One way to realign the
right stop is to turn the whole sprinkler body assembly
and the fitting below it, left or right to the desired position.
This may require temporary removal of the soil around
the sprinkler to allow you to grip the sprinkler housing.
Another way to reset the right arc is to unscrew the body
cap counterclockwise and remove the internal assembly
from the body. Once removed, rotate the nozzle turret
to the right stop, screw the internal assembly back into
the body with the nozzle aligned to the right side of the
area you want irrigated (Fig. 9). At this point you have
realigned the right arc stop, and you can adjust the left
arc to an appropriate setting.
Note:
It is not necessary to dig up and remove the whole
sprinkler to realign the right arc.
PGP ULTRA INSTALLATION:
The PGP Ultra pop-up sprinkler should
be installed at finished grade as shown in
the illustration (Fig. 1).
Arc Adjustments:
Adjustable heads are preset to
approximately 180˚. Sprinklers may
be adjusted with water on or off. It is
recommended that initial adjustments be
made before installation.
1. Using the palm of your hand, rotate the
nozzle turret counterclockwise to the left
stop to complete any interrupted rotation
cycle (Fig. 2).
2. Rotate the nozzle turret clockwise to the
right stop. This is the fixed side of the arc.
The nozzle turret must be held in this
position for arc adjustments. The right
stop does not change.
To Increase the Arc:
1. Insert the plastic key end of the Hunter
wrench into the adjustment socket
(Fig. 3 & 4).
2. While holding the nozzle turret at the right stop,
turn the wrench clockwise. Each full 360˚ turn
of the wrench will increase the arc 90˚.
3. Adjust to any arc between 50˚ and 360˚ (Fig. 5).
4. The wrench will stop turning, or there will be a
ratcheting noise, when the maximum arc of 360˚
(full circle) has been reached.
5. When set to 360, the sprinkler will rotate
continually counterclockwise.
To Decrease the Arc:
1. Insert the plastic key end of the Hunter wrench into
the adjustment socket (Fig. 3 & 4).
2. While holding the nozzle turret at the right stop, turn
the wrench counterclockwise. Each full 360˚ turn of
the wrench will decrease the arc 90˚.
3. Adjust to any arc between 50˚ and 360˚ (Fig. 5).
4. The wrench will stop turning, or there will be a
ratcheting noise, when the minimum arc of 50˚ has
been reached.
RADIUS / DISTANCE OF THROW
Insert the steel hex end of the Hunter wrench into the
radius adjustment screw (Fig. 6). Turn the screw
clockwise (into the stream of water) to decrease the
radius, or counterclockwise to increase the radius.
Radius can be reduced up to 25%.
PRECIPITATION RATE ADJUSTMENT
If you have excessively wet or dry areas, you can
change the nozzle in the sprinkler to increase or
decrease the precipitation rate. For dry areas, install a
larger nozzle. For wet areas, install a smaller nozzle.
DRAIN CHECk vALvE
All Hunter sprinklers are available with a factory-
installed drain check valve. The drain check valve
prevents low-head drainage with elevation changes
up to 10'. To order, specify PGP-00-CV or PGP-04-CV.
All PGP-12 sprinklers come standard with a drain
check valve. If a check valve is added to the standard
PGP-04 in the field, the elevation check height will be
approximately 4'.
RECLAIMED ID
All Hunter rotors are available with a purple rubber
cover permanently attached. The purple cover shows
that reclaimed water is being used for the project, which
promotes safety on the job site.
NOZZLE INSTALLATION
1. Insert the plastic key end of the Hunter wrench into the
lifting socket of the sprinkler and turn 90˚. Pull the riser up
to gain access to the nozzle socket (Fig. 8).
2. Using the hex key of the Hunter wrench, turn the radius
adjustment screw (Fig. 6)
counterclockwise to be sure it is not blocking the nozzle
socket opening. If a nozzle is already installed, it can
Gear-Driven Sprinklers
PGP
®
Ultra Series
Professional Series™
Fig. 4
Decrease Arc
Increase Arc
Plastic Key End
Steel Hex End
Note:
It is not necessary to disassemble the sprinkler to make adjustments.
Fig. 7
Nozzle Removal
Post
Fig. 7
Fig. 9
Fig. 4
Minimum
Arc
Maximum
Arc
50
°
360
°
Fig. 5
Fig. 5
Fig. 6
Fig. 6
Fig. 3
Model
Nozzle
No.
Pressure
in PSI
Degrees of
Trajectory
Max Height
of Spray
Distance from head
to Max Height
PGP Ultra
1.5
45
25
8'
23'
Blue
2.0
45
25
8'
23'
2.5
45
25
9'
26'
3.0
45
25
10'
28'
4.0
45
25
11'
30'
5.0
45
25
11'
30'
6.0
55
25
12'
32'
8.0
55
25
13'
32'
PGP Ultra
Low Angle
2.0LA
50
13
5'
22'
2.5LA
50
13
4'
22'
3.5LA
50
13
4'
22'
4.5LA
50
13
4'
22'
PGP Ultra
Short Radius
.50
50
15
5'
8'
1.0
50
14
6'
9'
2.0
50
3
1'
6'
PGP Ultra
Short Radius
.75
50
22
7'
13'
1.5
50
18
7'
13'
3.0
50
8
1'
6'
NON-REvERSING 360
This PGP Ultra sprinkler is designed as a part- and
full-circle in one model. When the sprinkler is adjusted
to the full-circle position, the sprinkler will rotate in a
continuous counterclockwise direction. This saves
everyone from stocking additional full-circle only models
while efficiently irrigating the landscapes.
NON-STRIPPAbLE bACkDRIvE
This PGP Ultra sprinkler is designed with an internal
device that prevents damage to the internal gear drive
if it should be turned by vandals. This important feature
works when the nozzle turret is turning in either direction.
This makes the sprinkler very durable in all applications.
AUTO ARC RETURN
This PGP Ultra sprinkler is designed with an internal
device that re-aligns the arc if it is turned by vandals.
This important feature works when the nozzle turret is
turning in either direction.
When forced outside of the originally set arc, the
sprinkler takes the
shortest path back to
the pattern without
going completely
around. This saves
the non-irrigated areas
from getting wet! Always
a good thing!
a
uto
-retu
rn
if fo
rced
d
esire
d se
t a
rc
Hunter Industries Incorporated • The Irrigation Innovators
© 2011 Hunter Industries Incorporated
www.hunterindustries.com
P/N 700054 LIT-469 2/11
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 8
