Toro DT34, DT54 User Manual

Introduction ______________________________________________________________________

The DT34 and DT54 series full-circle rotary sprinklers are designed
specifically for golf course applications.

Manufactured from durable, high-strength engineering plastic and
stainless-steel components, these sprinklers incorporate many innovative
and time-proven features for lasting, maintenance-free operation.

Prior to installing the sprinkler, read through the recommended installation
and start-up procedures. Please observe all WARNINGS and CAUTIONS
when installing and operating this equipment.

Features _______________________________________________________________________________

Specifications and Performance/Application Data _______________________________________

DT34 Series

■ Radius: 52'–92' (15,9–28,0 m)

■ Flow Rate: 15–50 GPM (56,7–189,3 LPM)

■ Trajectory: Selectable 15° or 25°

■ Arc: Full Circle

■ Recommended Operating Pressure: 65–100 PSI

(4,5–6,9 Bar)

■ Minimum Pressure: 40 PSI (2,8 Bar)

■ Maximum Pressure: 150 PSI (10,3 Bar)

■ Precipitation Rate:

■

Minimum: 0.46"/hr (11,7 mm/hr)

■ Maximum: 0.63"/hr (16 mm/hr)

■ Body Height: 10" (25.4 cm)

■ Pop-Up Height: 4.1875" (10.6 cm)

■ Inlet Size: 1" NPT, BSP or ACME

■ Electric Valve-in-head Solenoid:

■ Inrush current: 0.30A @ 24 VAC, 50/60 Hz

■ Holding current: 0.20A @ 24 VAC, 50/60 Hz

■ Manual Control (Electric VIH only): On-Off-Auto

■ Check-O-Matic model checks up to 37' (11,2 m) of elevation.

■ Seven Nozzle Variations: See chart on page 2.

DT54 Series

■ Radius: 52'–100' (15,9 m–30,5 m)

■ Flow Rate: 15–62 GPM (56,8–234,7 LPM)

■ Trajectory: Selectable 15° or 25°

■ Arc: Full Circle

■ Recommended Operating Pressure: 65–100 PSI (4,5–6,9 Bar)

■ Minimum Pressure: 40 PSI (2,8 Bar)

■ Maximum Pressure: 150 PSI (10,3 Bar)

■ Precipitation Rate:

■ Minimum: 0.50"/hr (12,7 mm/hr)

■ Maximum: 0.72"/hr (18,3 mm/hr)

■ Body Height: 11" (27.9 cm)

■ Pop-Up Height: 4.1875" (10.6 cm)

■ Inlet Size: 1.5" NPT, BSP or ACME

■ Solenoid:

■ Inrush current: 0.30A @ 24 VAC, 50/60 Hz

■ Holding current: 0.20A @ 24 VAC, 50/60 Hz

■ Manual Control (Electric VIH only): On-Off-Auto

■ Check-O-Matic model checks up to 37' (11,2 m) of elevation.

■ Nine Nozzle Variations: See chart on page 2.

DT34 Electric Valve-In-Head DT54 Electric Valve-In-Head

■ Main nozzle trajectory allows for 25 and 15 degree selections

■ Full 4" (10,1 cm) pop-up clears tall grasses

■ Nozzles color-coded by radius and gallonage

■ Cap serves as an effluent water indicator

■ Variable stators

■ Selectable pressure regulation settings of 50 psi (3.4 bar),

65 psi (4.5 bar), 80 psi (5.5 bar) or 100 PSI (6.9 bar) to
ensure consistently accurate nozzle performance
regardless of elevation (electric models only)

■ Three body activation types available: Electric VIH,

Normally Open Hydraulic VIH, and Check-O-Matic

■ Three body thread types available: NPT, BSP and ACME

■ Manual sprinkler control, On-Off-Auto (electric models only)

■ Bowl-vented discharge (atmospheric) minimizes the

differential pressure required for regulation and ensures
positive valve closure (electric models only)

■ All internal components serviceable from the top of the

sprinkler

■ Large selection of color-coded nozzles available

■ Durable plastic and stainless-steel construction

■ Optional radius reduction screw

DT34 and DT54 Series Rotary Sprinklers

Installation & Service Instructions

Note: For preliminary use only.

A U T O

O F F

O N

2

Precipitation Rate Formulas

❚ Square-spaced sprinklers in pattern:

GPM of full circle x 96.3

(Spacing)

2

❚ Triangular-spaced sprinklers in pattern:

GPM of full circle x 96.3

(Spacing)2(0.866)

❚ Area and flow:

Total GPM of zone x 96.3

Total irrigated

square feet of zone

❚ Single row:

GPM of full circle x 96.3

(Spacing) (Scallop)

Sprinkler Spacing Guidelines

❚ Square Spacing

No wind - 55% of diameter
4 mph wind - 50% of diameter
8 mph wind - 45% of diameter

❚ Triangular Spacing

No wind - 60% of diameter

4 mph wind - 55% of diameter
8 mph wind - 50% of diameter

❚ Single-Row Spacing

No wind - 50% of diameter
4 mph wind - 50% of diameter
8 mph wind - 45% of diameter

Note: Designing for zero (0) mph
wind conditions is not recommended.
Design for worst wind conditions.

For additional information, refer to
Toro Technical Data Manual,
form number 490-1737.

DT54 Series Sprinkler Performance Data

DT34 Series Sprinkler Performance Data

Base

Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set

Pressure

31 ● (Yellow) 32 ● (Blue) 33 ● (Brown) 34 ● (Orange) 35 ● (Green) 36 ● (Gray) 37 ● (Black)

★ BLUE ■ YELLOW ★ RED ■ YELLOW ★ RED ■ YELLOW ★ BEIGE ■ YELLOW ★ BIEGE ■ YELLOW ✪ RED ■ YELLOW ✪ GRAY ■ YELLOW

psi Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM

50 56 13.2 60 16.6 64 22.3 65 27.4
65 58 15.0 62 20.0 66 25.0 70 30.0 75 35.0
80 61 16.5 66 22.1 70 27.4 73 33.2 78 38.4 84 41.0 87 45.0

100 63 18.4 71 24.7 74 30.3 76 37.0 81 42.5 87 46.0 90 49.5

Radius shown in feet.

Toro recommends the use of a 11⁄4" (30mm) swing joint at flows over 25 GPM (95 LPM). Sprinkler radius of throw per ASAE standard S398.1

●

= Main Nozzle★= Intermediate Nozzle✪= Intermediate Nozzle w/ Straightener■= Inner Nozzle (Yellow w/ Yellow Restrictor)

All sprinklers are equipped with the selectable pilot valve that allows settings at 50, 65, 80 and 100 psi.

Base

Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set Nozzle Set

Pressure

51 ● (Yellow) 52 ● (Blue) 53 ● (Brown) 54 ● (Orng) 55 ● (Green) 56 ● (Gray) 57 ● (Black) 58 ● (Red) 59 ● (Beige)

★

BLUE

■YELLOW ★

RED

■YELLOW ★

RED

■YELLOW ★

BEIGE

■YELLOW ★

BEIGE

■YELLOW ✪

RED

■YELLOW ★

BRN✪GRY

■YLW ★

BRN✪GRY

■YLW ✪

GRAY

■YELLOW

psi

Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM Radius GPM

50 56 13.2 60 16.6 64 22.3 65 27.4
65 58 15.0 62 20.0 66 25.0 70 30.0 75 35.0
80 61 16.5 66 22.1 70 27.4 73 33.2 78 38.4 84 41.0 87 45.0 90 52.0 94 57.5

100 63 18.4 71 24.7 74 30.3 76 37.0 81 42.5 87 46.0 90 49.5 95 56.5 100 62.0

Low-flow Stator Medium-flow Stator High-flow

Radius shown in feet.

Toro recommends the use of a 11⁄4" (30mm) swing joint at flows over 25 GPM (95 LPM). Sprinkler radius of throw per ASAE standard S398.1

●

= Main Nozzle★= Intermediate Nozzle✪= Intermediate Nozzle w/ Straightener■= Inner Nozzle (Yellow w/ Yellow Restrictor)

All sprinklers are equipped with the selectable pilot valve that allows settings at 50, 65, 80 and 100 psi.

Installation Procedure ___________________________________________________

To assure maximum performance from your 800S series sprinklers, read these instructions
completely prior to installation or service.

Constructing Swing Joints

1. Construct or provide triple swing joints for each sprinkler as shown in Figure 1. Use PVC or
ABS pipe nipple for the sprinkler connection.

Note: On sites where the possibility of heavy equipment rolling over a sprinkler exists, the
swing joint will flex preventing damage to the lateral or main lines. On a new installation in
raw ground where the sprinklers are to be initially installed above the finished grade and
lowered when new turf is established, the swing joint allows sprinkler repositioning without
changing risers. This is a common and practical procedure which eliminates the problem of
dirt being accidentally introduced into the lateral lines when a riser is changed.

2. Flush lines thoroughly prior to installing sprinkler.

3. Apply PTFE tape on riser threads (not required on ACME threads). Install sprinkler to riser and tighten.

CAUTION: Use only PTFE tape on riser threads. Use of pipe dope or other types of sealing compounds can cause

deterioration of sprinkler body threads.

Connecting Control Wires (Electric Models Only)

1. Route control wires to sprinklers. Provide extra wire at sprinkler to allow for height adjustment. One common wire and station
wire is required for each sprinkler. See Wire Sizing Chart, Table 1 for proper application.
Note: Wire length data provided in Table 1 is the sum of the station and common wire legs. See example in Figure 2.

2. Attach control wires to solenoid leads using an
approved waterproof splicing method.

CAUTION: All wire splices and field

connections must be waterproofed to prevent

short circuit to ground and subsequent controller

damage.

Connecting Hydraulic Control Tubing

1. Route control tubing from the controller to the
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. Refer to Table 2 for tubing
run length and sprinkler elevation information.

2. Flush tubing thoroughly to remove all air and debris.

3. Remove the tube retainer and poly cap from the
tubing adapter at the base of the sprinkler.

4. Slide the tube retainer over the end of the control

tubing and attach tubing to adapter.

5. Slide tube retainer over adapter area to secure tubing.

3

Table 2: Hydraulic Control Systems

Maximum Distance

Type of System* From Controller Elevation Restrictions

Normally Open (01) Valve elevation should not exceed
with 3/16" Control Tubing 500' 25' ABOVE controller elevation or

70' BELOW controller elevation.

Normally Open (01) Valve elevation should not exceed
with 1/4" Control Tubing 1000' 25' ABOVE controller elevation or

70' BELOW controller elevation

Table 1: Wire Sizing Chart

*

- All hydraulic connections on Toro valves are 1⁄4" insert type.

- Control line pressure must be equal to or greater than mainline pressure.

- Control line pressure range is 40 to 150 PSI.

Figure 1

Figure 2

Station Wire = 1095' (334m)

Common Wire = 1095' (334m)

Total Wire Length = 2190' (668m)

T O
A U

F F
O

N
O

Voltage AWG mm

23
23
23
23
23
23
23

14/14
14/12
14/10
12/12
12/10
12/8

10/10
24 14/14 5 4100 4106' 2053' 1369' 1026'
24 14/12 5 5315
24 14/10 5 7250 7261' 3631'
24
24
24
24

12/12

12/10

12/8

10/10 10/10

2.5/2.5

2.5/4.0

2.5/5.5

4.0/4.0

4.0/5.5

4.0/7.0

5.5/5.5

2.5/2.5

2.5/4.0

2.5/5.5

4.0/4.0

4.0/5.5

4.0/5.5

2

Voltage Drop

Circular Mils 1 Sprinkler
4 4100 3285' 1001 m
45315
4 7250
46530
4 8465
4 11515
4 10400

56530 6540' 3270' 2180' 1635'
5 8465 8478' 4239' 2826'
5 11515 11533'
5 10400 10416' 5208' 3472' 2604'

Total Wire Length Between Controller and Sprinkler

2 Sprinklers3 Sprinklers 4 Sprinklers

1642' 1095' 821'

4259' 2129' 1419' 1064'
5809' 2904' 1936' 1452'
5232' 2616' 1744' 1308'
6783' 3391' 2261' 1695'
9227' 4613' 3075'
8333' 4166' 2778'

1298 m
1770 m
1595 m
2067 m
2812 m
2540 m
1251 m

5323'

1622 m

2662' 1774'
2213 m
1993 m
2584 m
3515 m

5766'
3175 m

500 m
649 m
885 m
797 m
1033 m
1406 m
1270 m
626 m
811 m
1106 m
996 m
1292 m
1757 m

158

7 m

2420'

3844'

334 m

432 m
590 m
531 m
689 m
937 m
846 m
417 m
541 m
738 m
664 m
861 m

1172 m
1058 m

2306'
2083'

1331'
1815'

2119'
2883'

250 m
324 m
443 m
399 m
517 m
703 m
635 m
313 m
406 m
553 m
498 m
646 m
879 m
790 m

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' (.61 m) per second. See Table 3 below.

Table 3: Recommended System Fill Rate

1. Use a jockey pump only to fill the system at a velocity fill rate of less than 2' (0.61 m) per second.

CAUTION: Failure to comply with recommended fill rate will increase line pressure resulting in a water hammer

effect that could damage sprinklers and piping components. See Warning above.

2. At all tees and greens use quick coupler keys with quick coupler valves to bleed air from the system lines during the filling
process. For best results, do not compress air and then relieve it – bleed the air constantly while filling the system.

3. After water has filled all lines and all air is removed, remove the quick coupler keys.

Pilot Valve Operation (Electric Models Only) ________________________________________

The pilot valve controls the operation of the main valve located in the
base of the sprinkler body. The main valve is operated by the release
of water metered through the pilot valve when it is activated either
manually at the sprinkler or by the irrigation system controller.

The sprinkler operation mode is set using a Toro Selector Tool
(P/N 995-15) inserted through the body flange onto the pilot valve
D-shaped selector cam. The "AUTO" mode permits automatic
operation from the system controller. The "ON" mode opens the main
valve for manual operation and "OFF" mode prevents the main valve
from opening.

The pilot valve regulates the water pressure to the sprinkler nozzle.
Pressure regulation compensates for large variations within the
system and maintains a constant pressure for optimum sprinkler
operation. The pilot valve is factory set to regulate one of four
pressure levels: 50 psi (3.4 bar), 65 psi (4.5 bar), 80 psi (5.5 bar) or
100 PSI (6.9 bar).

Change the pilot valve operating pressure by loosening the thumb
screw that secures the selector lever. Position the selector lever to
the desired operating pressure and hand-tighten the nut. See Figure 3.

4

WARNING
NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED,
DURING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE
PROCEDURES. DIRECT CONTACT WITH IRRIGATION SPRAY, A FAILED OR IMPROPERLY INSTALLED
SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER
PRESSURE CAN CAUSE SERIOUS INJURY.

Pipe Size Flow Velocity Pipe Size Flow Velocity

in. cm GPM LPM ft/sec m/sec in. cm GPM LPM ft/sec m/sec
1/2 1.3 2 7.6 1.60 0.49 3 7.6 45 170.3 1.86 0.57
3/4 1.9 3 11.4 1.92 0.59 4 10.1 75 283.9 1.87 0.57

1 2.5 5 18.9 1.50 0.46 6 15.2 150 567.8 1.73 0.53
1-1/4 3.1 10 37.9 1.86 0.57 8 20.2 250 946.3 1.70 0.52
1-1/2 3.8 10 37.9 1.41 0.43 10 25.4 450 1703.0 1.97 0.60

2 5.0 20 75.7 1.80 0.55 12 30.5 500 1893.0 1.55 0.47
2-1/2 6.4 30 113.6 1.84 0.56

Figure 3

100 PSI

(7.0 kg/cm

2

)

80 PSI

(5.6 kg/cm

2

)

65 PSI

(4.6 kg/cm

2

)

50 PSI (3.5 kg/cm

2

)