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Connecting Hydraulic Control Tubing
1. Route control tubing from controller to sprinkler
location(s).
NOTE:
Leave an 18" (45.7 cm) service loop of tubing at each
sprinkler to facilitate movement of sprinkler and
service operations.
Tubing runs in excess of 1,000' (304.8 m) are not
advisable due to delayed response time.
The valve elevation for normally open valve-in-head
systems should not exceed 25' (7.6 m) above
controller elevation or 70' (21.3 m) below controller
elevation.
The valve elevation for normally closed valve-in-head
systems should not exceed 0' above controller
elevation or 70' (21.3 m) below controller elevation.
If connecting more than one VIH sprinkler per control
tubing run, refer to the chart below.
Recommended
1" VIH
3
1.5" VIH
2
2. Flush tubing thoroughly to remove all air and debris.
3. Remove tube retainer and poly cap from tubing
adapter at base of sprinkler.
4. Slide tube retainer over control tubing and attach tubing to adapter.
5. Slide tube retainer over adapter area to secure tubing.
System Start-Up
The following is a recommended procedure that will protect system components during system start-up. The procedure is based on a
velocity fill rate of less than 2' (0.6 m) per second. See Table 2 below.
DUE TO HIGH OPERATING PRESSURE, NEVER STAND OR LEAN DIRECTLY OVER TOP OF
SPRINKLER OR COME IN CONTACT WITH SPRAY. FAILURE TO COMPLY MAY RESULT IN
SERIOUS INJURY.
1. Use jockey pump only to fill system at velocity fill rate of less than 2' (0.6 m) per second.
2. Use quick coupler keys at all tees and greens with quick coupler valves to bleed air from system lines during filling process. Do
not compress air and then relieve, bleed air while filling system.
3. After water has filled all lines and all air is removed, remove quick coupler keys.
Failure to comply with recommended fill rate will increase line pressure resulting in a water hammer effect
that could damage sprinklers and/or piping system.
Pipe Size
in.
cm
1/2
1.3
3/4
1.9
1
2.5
1-1/4
3.2
1-1/2
3.8
2
5.0
2-1/2
6.4
Maximum
5
3
Table 2:
Recommended System Fill Rate
Flow
Velocity
GPM
LPM
ft/sec
2
7.6
1.60
3
11.4
1.92
5
18.9
1.50
10
37.9
1.86
10
37.9
1.41
20
75.7
1.80
30
113.6
1.84
Table 2:
Maximum Distance
Type of System*
From Controller
Pin-type
(00) Hydraulic*
£
with
3
⁄
" Control Tubing
1 6
Pin-type
(00) Hydraulic*
£
with
1
⁄
" Control Tubing
4
Normally Open (01)
with
⁄
" Control Tubing
3
1 6
Normally Closed (08)
with
3
⁄
" Control Tubing
1 6
Normally Open (01)
with
1
⁄
" Control Tubing
4
Normally Closed (08)
with
1
⁄
" Control Tubing
4
* - All hydraulic connections on Toro valves are
- Control line pressure must be equal to or 10% greater than mainline pressure.
- Control line pressure range is 40 to 150 PSI
£
NOTE: Maximum of one (1) valve pr station on pin-type systems.
WARNING
CAUTION
Pipe Size
m/sec
in.
cm
0.49
3
7.6
0.59
4
10.2
0.46
6
15.2
0.57
8
20.2
0.43
10
25.4
0.55
12
30.5
0.56
Control Systems
Elevation Restrictions
100'
200'
Valve elevation should not exceed
500'
25' ABOVE controller elevation or
70' BELOW controller elevation.
Valve elevation should not exceed
500'
0' ABOVE controller elevation or
70' BELOW controller elevation.
Valve elevation should not exceed
1000'
25' ABOVE controller elevation or
70' BELOW controller elevation.
Valve elevation should not exceed
1000'
0' ABOVE controller elevation or
70' BELOW controller elevation.
1
⁄
" insert type.
4
Flow
Velocity
GPM
LPM
ft/sec
45
170.3
1.86
75
283.9
1.87
150
567.8
1.73
250
946.3
1.70
450
1703.3
1.97
500
1892.5
1.55
m/sec
0.57
0.57
0.53
0.52
0.60
0.47
3
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