Hunter Institutional Series User manual

ARC ADJUSTMENT
The I-20 Ultra pop-up sprinkler should be installed at
nished 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 xed 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 40° 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.
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 40° and 360° (Fig. 5).
4. The wrench will stop turning, or there will be a ratcheting noise, when the minimum arc of 40°
has been reached.
Note: It is not necessary to disassemble the sprinkler to make adjustments.
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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.
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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 be removed by backing out the
adjustment screw and turning on the water, or by pulling
outward on the nozzle removal post 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°. Then tighten the nozzle
range screw. The triangle on the rubber cover will always
indicate the location of the nozzle and direction of water
ow when the sprinkler is retracted.
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Caution: Turning the adjustment screw
clockwise more than ve full turns may
result in a lost radius adjustment screw.
Hunter Industries Incorporated • The Irrigation Innovators © 2007 Hunter Industries Incorporated
www.HunterIndustries.com P/N 700053 LIT-053 4/07
Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers

ARC ADJUSTMENT
The I-20 Ultra pop-up sprinkler should be installed at
nished 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 xed 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 40° 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.
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 40° and 360° (Fig. 5).
4. The wrench will stop turning, or there will be a ratcheting noise, when the minimum arc of 40°
has been reached.
Note: It is not necessary to disassemble the sprinkler to make adjustments.
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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.
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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 be removed by backing out the
adjustment screw and turning on the water, or by pulling
outward on the nozzle removal post 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°. Then tighten the nozzle
range screw. The triangle on the rubber cover will always
indicate the location of the nozzle and direction of water
ow when the sprinkler is retracted.
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Caution: Turning the adjustment screw
clockwise more than ve full turns may
result in a lost radius adjustment screw.
Hunter Industries Incorporated • The Irrigation Innovators © 2007 Hunter Industries Incorporated
www.HunterIndustries.com P/N 700053 LIT-053 4/07
Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers

Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers
I-10/I-20 Ultra Low Angle Nozzle
Performance Data
Pressure Radius Flow Precip in/hr
Nozzle PSI ft. GPM
2.0
LA
30
40
50
60
25'
27'
28'
30'
1.6
1.9
2.1
2.3
0.49
0.50
0.52
0.49
0.57
0.58
0.60
0.57
2.5
LA
30
40
50
60
27'
30'
33'
35'
2.1
2.5
2.8
3.0
0.55
0.53
0.49
0.47
0.64
0.62
0.57
0.54
3.5
LA
30
40
50
60
29'
32'
35'
37'
2.8
3.1
3.5
3.8
0.64
0.58
0.55
0.53
0.74
0.67
0.64
0.62
4.5
LA
30
40
50
60
29'
32'
35'
37'
3.4
3.9
4.4
4.7
0.78
0.73
0.69
0.66
0.90
0.85
0.80
0.76
Note: All precipitation rates are calculated for 180 degree operation.
For the precipitation rate for a 360 degree sprinkler, divide by 2.
I-10/I-20 Ultra Low Angle Nozzle
Performance Data – Metric
Pressure Radius Flow Precip mm/hr
Nozzle Bars kPa m m3/hr l/min
2.0
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
7.3
7.6
7.9
8.2
8.5
8.8
9.1
0.33
0.36
0.40
0.45
0.48
0.52
0.55
5.6
6.0
6.7
7.4
8.0
8.6
9.1
12
12
13
13
13
13
13
14
14
15
15
15
15
15
2.5
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
7.9
8.2
8.8
9.4
10.1
10.4
10.7
0.44
0.47
0.53
0.59
0.64
0.68
0.72
7.3
7.9
8.8
9.8
10.6
11.3
12.0
14
14
14
13
13
13
13
16
16
16
15
15
15
15
3.5
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
8.5
8.8
9.1
10.1
10.7
11.0
11.3
0.58
0.62
0.68
0.75
0.80
0.85
0.89
9.7
10.3
11.4
12.5
13.3
14.1
14.8
16
16
16
15
14
14
14
18
18
19
17
16
16
16
4.5
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
8.2
8.8
9.1
10.1
10.7
11.0
11.3
0.71
0.76
0.84
0.93
1.00
1.06
1.12
11.8
12.7
14.1
15.5
16.6
17.6
18.6
21
19
20
18
18
18
18
24
23
23
21
20
20
20
Note: All precipitation rates are calculated for 180 degree operation.
For the precipitation rate for a 360 degree sprinkler, divide by 2.
I-10/I-20 Ultra Standard Nozzle
Performance Data
Pressure Radius Flow Precip in/hr
Nozzle PSI ft. GPM
1.0
30
40
50
60
30'
31'
31'
32'
0.9
1.0
1.2
1.3
0.19
0.20
0.24
0.24
0.22
0.23
0.28
0.28
1.5
30
40
50
60
32'
33'
34'
34'
1.2
1.4
1.6
1.8
0.23
0.25
0.27
0.30
0.26
0.29
0.31
0.35
2.0
30
40
50
60
32'
34'
36'
36'
1.6
1.8
2.0
2.2
0.30
0.30
0.30
0.33
0.35
0.35
0.34
0.38
3.0
30
40
50
60
34'
36'
38'
38'
2.0
2.4
2.7
2.9
0.33
0.36
0.36
0.39
0.38
0.41
0.42
0.45
3.5
30
40
50
60
34'
38'
40'
40'
2.6
3.0
3.4
3.7
0.43
0.40
0.41
0.45
0.52
0.46
0.47
0.51
4.0
30
40
50
60
37'
39'
41'
42'
3.2
3.7
4.2
4.6
0.45
0.47
0.48
0.50
0.52
0.54
0.56
0.58
6.0
30
40
50
60
35'
40'
43'
44'
4.2
4.9
5.5
6.0
0.66
0.59
0.57
0.60
0.76
0.68
0.66
0.69
8.0
40
50
60
70
41'
44'
45'
47'
6.0
6.8
7.6
8.2
0.69
0.68
0.72
0.71
0.79
0.78
0.83
0.83
I-10/I-20 Ultra Standard Nozzle
Performance Data – Metric
Pressure Radius Flow Precip mm/hr
Nozzle Bars kPa m m3/hr l/min
1.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
8.8
9.1
9.4
9.4
9.4
9.8
9.8
0.18
0.20
0.22
0.25
0.27
0.29
0.31
3.0
3.3
3.7
4.1
4.5
4.8
5.1
5
5
5
6
6
6
6
5
5
6
6
7
7
7
1.5
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
9.4
9.8
9.8
10.1
10.4
10.4
10.4
0.24
0.27
0.30
0.34
0.37
0.40
0.43
4.1
4.4
5.0
5.6
6.2
6.6
7.1
5
6
6
7
7
7
8
6
6
7
8
8
9
9
2.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
9.4
9.8
9.8
10.4
11.0
11.0
11.0
0.33
0.36
0.39
0.43
0.46
0.49
0.51
5.5
5.9
6.5
7.2
7.7
8.1
8.6
7
7
8
8
8
8
9
9
9
10
9
9
9
10
3.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
10.1
10.4
10.4
11.0
11.6
11.6
11.6
0.42
0.45
0.51
0.57
0.61
0.66
0.70
6.9
7.5
8.5
9.4
10.2
10.9
11.6
8
8
9
9
9
10
10
10
10
11
11
11
11
12
3.5
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
10.1
10.4
11.0
11.3
11.6
11.6
11.6
0.54
0.58
0.65
0.72
0.78
0.83
0.88
9.0
9.7
10.8
12.0
12.9
13.8
14.6
11
11
11
11
12
12
13
12
12
12
13
13
14
15
4.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
11.0
11.3
11.6
11.9
12.5
12.5
12.8
0.66
0.71
0.80
0.89
0.96
1.03
1.09
11.0
11.9
13.3
14.8
16.0
17.1
18.2
11
11
12
13
12
13
13
13
13
14
15
14
15
15
6.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
9.8
10.7
11.3
11.9
13.1
13.1
13.4
0.87
0.94
1.05
1.17
1.26
1.34
1.43
14.5
15.7
17.5
19.4
21.0
22.4
23.8
18
17
17
16
15
16
16
21
19
19
19
17
18
18
8.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
11.3
11.9
12.5
13.1
13.4
13.7
14.3
1.05
1.14
1.29
1.44
1.56
1.68
1.79
17.4
19.0
21.4
24.0
26.1
28.0
29.9
16
16
16
17
17
18
17
19
19
19
19
20
21
20
Note: All precipitation rates are calculated for 180 degree operation.
For the precipitation rate for a 360 degree sprinkler, divide by 2.
'JH
'JH
'JH
'JH
/P[[MF3FNPWBM
1PTU
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 tting 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
TURNING FLOW ON OR OFF
Insert the plastic key end of the Hunter wrench into the FloStop® adjustment socket (Fig. 3 & 10).
Turn wrench clockwise to decrease or shut off the ow. Turn the wrench counterclockwise to
increase the ow.
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.
Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers

Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers
I-10/I-20 Ultra Low Angle Nozzle
Performance Data
Pressure Radius Flow Precip in/hr
Nozzle PSI ft. GPM
2.0
LA
30
40
50
60
25'
27'
28'
30'
1.6
1.9
2.1
2.3
0.49
0.50
0.52
0.49
0.57
0.58
0.60
0.57
2.5
LA
30
40
50
60
27'
30'
33'
35'
2.1
2.5
2.8
3.0
0.55
0.53
0.49
0.47
0.64
0.62
0.57
0.54
3.5
LA
30
40
50
60
29'
32'
35'
37'
2.8
3.1
3.5
3.8
0.64
0.58
0.55
0.53
0.74
0.67
0.64
0.62
4.5
LA
30
40
50
60
29'
32'
35'
37'
3.4
3.9
4.4
4.7
0.78
0.73
0.69
0.66
0.90
0.85
0.80
0.76
Note: All precipitation rates are calculated for 180 degree operation.
For the precipitation rate for a 360 degree sprinkler, divide by 2.
I-10/I-20 Ultra Low Angle Nozzle
Performance Data – Metric
Pressure Radius Flow Precip mm/hr
Nozzle Bars kPa m m3/hr l/min
2.0
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
7.3
7.6
7.9
8.2
8.5
8.8
9.1
0.33
0.36
0.40
0.45
0.48
0.52
0.55
5.6
6.0
6.7
7.4
8.0
8.6
9.1
12
12
13
13
13
13
13
14
14
15
15
15
15
15
2.5
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
7.9
8.2
8.8
9.4
10.1
10.4
10.7
0.44
0.47
0.53
0.59
0.64
0.68
0.72
7.3
7.9
8.8
9.8
10.6
11.3
12.0
14
14
14
13
13
13
13
16
16
16
15
15
15
15
3.5
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
8.5
8.8
9.1
10.1
10.7
11.0
11.3
0.58
0.62
0.68
0.75
0.80
0.85
0.89
9.7
10.3
11.4
12.5
13.3
14.1
14.8
16
16
16
15
14
14
14
18
18
19
17
16
16
16
4.5
LA
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
8.2
8.8
9.1
10.1
10.7
11.0
11.3
0.71
0.76
0.84
0.93
1.00
1.06
1.12
11.8
12.7
14.1
15.5
16.6
17.6
18.6
21
19
20
18
18
18
18
24
23
23
21
20
20
20
Note: All precipitation rates are calculated for 180 degree operation.
For the precipitation rate for a 360 degree sprinkler, divide by 2.
I-10/I-20 Ultra Standard Nozzle
Performance Data
Pressure Radius Flow Precip in/hr
Nozzle PSI ft. GPM
1.0
30
40
50
60
30'
31'
31'
32'
0.9
1.0
1.2
1.3
0.19
0.20
0.24
0.24
0.22
0.23
0.28
0.28
1.5
30
40
50
60
32'
33'
34'
34'
1.2
1.4
1.6
1.8
0.23
0.25
0.27
0.30
0.26
0.29
0.31
0.35
2.0
30
40
50
60
32'
34'
36'
36'
1.6
1.8
2.0
2.2
0.30
0.30
0.30
0.33
0.35
0.35
0.34
0.38
3.0
30
40
50
60
34'
36'
38'
38'
2.0
2.4
2.7
2.9
0.33
0.36
0.36
0.39
0.38
0.41
0.42
0.45
3.5
30
40
50
60
34'
38'
40'
40'
2.6
3.0
3.4
3.7
0.43
0.40
0.41
0.45
0.52
0.46
0.47
0.51
4.0
30
40
50
60
37'
39'
41'
42'
3.2
3.7
4.2
4.6
0.45
0.47
0.48
0.50
0.52
0.54
0.56
0.58
6.0
30
40
50
60
35'
40'
43'
44'
4.2
4.9
5.5
6.0
0.66
0.59
0.57
0.60
0.76
0.68
0.66
0.69
8.0
40
50
60
70
41'
44'
45'
47'
6.0
6.8
7.6
8.2
0.69
0.68
0.72
0.71
0.79
0.78
0.83
0.83
I-10/I-20 Ultra Standard Nozzle
Performance Data – Metric
Pressure Radius Flow Precip mm/hr
Nozzle Bars kPa m m3/hr l/min
1.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
8.8
9.1
9.4
9.4
9.4
9.8
9.8
0.18
0.20
0.22
0.25
0.27
0.29
0.31
3.0
3.3
3.7
4.1
4.5
4.8
5.1
5
5
5
6
6
6
6
5
5
6
6
7
7
7
1.5
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
9.4
9.8
9.8
10.1
10.4
10.4
10.4
0.24
0.27
0.30
0.34
0.37
0.40
0.43
4.1
4.4
5.0
5.6
6.2
6.6
7.1
5
6
6
7
7
7
8
6
6
7
8
8
9
9
2.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
9.4
9.8
9.8
10.4
11.0
11.0
11.0
0.33
0.36
0.39
0.43
0.46
0.49
0.51
5.5
5.9
6.5
7.2
7.7
8.1
8.6
7
7
8
8
8
8
9
9
9
10
9
9
9
10
3.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
10.1
10.4
10.4
11.0
11.6
11.6
11.6
0.42
0.45
0.51
0.57
0.61
0.66
0.70
6.9
7.5
8.5
9.4
10.2
10.9
11.6
8
8
9
9
9
10
10
10
10
11
11
11
11
12
3.5
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
10.1
10.4
11.0
11.3
11.6
11.6
11.6
0.54
0.58
0.65
0.72
0.78
0.83
0.88
9.0
9.7
10.8
12.0
12.9
13.8
14.6
11
11
11
11
12
12
13
12
12
12
13
13
14
15
4.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
11.0
11.3
11.6
11.9
12.5
12.5
12.8
0.66
0.71
0.80
0.89
0.96
1.03
1.09
11.0
11.9
13.3
14.8
16.0
17.1
18.2
11
11
12
13
12
13
13
13
13
14
15
14
15
15
6.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
9.8
10.7
11.3
11.9
13.1
13.1
13.4
0.87
0.94
1.05
1.17
1.26
1.34
1.43
14.5
15.7
17.5
19.4
21.0
22.4
23.8
18
17
17
16
15
16
16
21
19
19
19
17
18
18
8.0
1.7
2.0
2.5
3.0
3.5
4.0
4.5
172
200
248
303
352
400
448
11.3
11.9
12.5
13.1
13.4
13.7
14.3
1.05
1.14
1.29
1.44
1.56
1.68
1.79
17.4
19.0
21.4
24.0
26.1
28.0
29.9
16
16
16
17
17
18
17
19
19
19
19
20
21
20
Note: All precipitation rates are calculated for 180 degree operation.
For the precipitation rate for a 360 degree sprinkler, divide by 2.
'JH
'JH
'JH
'JH
/P[[MF3FNPWBM
1PTU
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 tting 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
TURNING FLOW ON OR OFF
Insert the plastic key end of the Hunter wrench into the FloStop® adjustment socket (Fig. 3 & 10).
Turn wrench clockwise to decrease or shut off the ow. Turn the wrench counterclockwise to
increase the ow.
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.
Institutional Series™
I-10 & I-20 Ultra
Gear-Driven Sprinklers