User's Manual

ManualsBrandsToro ManualsValvesToro 220G Series

Installation Guidelines

• Note the flow direction arrow in the side of the valve body and install accordingly.

• The valve can be installed at any angle without affecting operation.

Electric valves only:

• Use direct-burial irrigation control wire for connection from the controller to valves.

• Leaving a wire expansion loop at each valve location on long-run wire lengths is recommended.

• Waterproof wire splice connectors are absolutely essential for proper electric control system operation. Follow the

installation instructions provided with the connectors for optimum waterproof splice protection.

Hydraulic valves only:

Note:

The normally open hydraulic valve is particularly appropriate for dirty-water applications such as effluent water use.

With these valves, the main-flow water supply is not utilized as a source for closing the valve. The pressure within the

diaphragm chamber on a normally open valve is supplied separately through a filtered water source from the controller.

• To enable proper valve operation, the filtered water supplied to the controller and valves must be obtained from the high-

est source of pressure within the irrigation system. In other words, the water pressure in the control tubing from the con-

troller to the valves must be greater than or equal to the main-flow water pressure on the inlet side of the valve

• The recommended maximum control tubing run is 1000'. Exceeding this distance may cause erratic valve operation.

• Prior to connecting the control tube to the valve fitting, the tube must be pre-filled and completely free of all debris and

trapped air. A flushing adapter (model 995-02) enables the tubing to be easily attached to a standard water hose end for

this procedure.

• Leaving an expansion loop at each valve location is recommended.

• Hydraulic valve control tubing should be rated for a maximum continuous working pressure of 220 psi with

⁄4" O.D. and

⁄8"

I.D. Toro polyethylene control tubing and fittings are recommended for this type of installation. See Table 3 below.

Valve Operation and Adjustment

Flow Control

The flow control is used to reduce the flow and pressure to the valve outlet. By turning the control handle clockwise, the flow

will gradually be reduced to zero.

• For valve models

without EZReg, adjust the flow control as necessary for optimum sprinkler performance.

• For valve models

with EZReg, the flow control should remain in the fully open position. Use only for emergency shut off.

Manual Bleed Knob (electric valves only)

The manual bleed knob is used to manually operate the valve. Turning the knob counterclockwise 2–3 turns allows water to

bleed downstream from the diaphragm chamber, relieving pressure from the top of the diaphragm which allows the valve to

open. Turning the bleed knob clockwise until finger tight, shuts off the discharge enabling pressure to build within the

diaphragm chamber, causing the valve to close.

Pressure Regulation (electric valves with EZReg only)

An accurate, adjustable dial coupled with a forward-flow valve design allows the 220 series valve with EZReg to regulate

downstream water pressure with precision. It can regulate accurately down to 5 GPM flow (1" model) and only requires 10 psi

differential pressure to operate. The EZReg will operate during electrical and manual valve operation.

To adjust, remove the cover from the regulator dial. Turn the dial until the pointer is on the desired downstream pressure:

5–30 psi (EZR-30) or 5–100 psi (EZR-100).

Note: Due to the micro-adjustment feature of the EZReg, the dial requires several complete revolutions to move the pointer

from the minimum to the maximum adjustment settings.

Operate the valve (electrically or manually). Check the flow control to confirm that it is in the fully open position. Adjust the

regulator dial if necessary for optimum sprinkler operation.

To confirm the downstream pressure using a pressure gauge, remove the cap from the Schrader-type valve located directly

below the EZReg. Attach a Toro pressure gauge (Model 995-51) to the Schrader-type valve for a direct reading. Adjust EZReg

dial as necessary for the desired pressure.

Note: The valve will remain operational if removal of the EZReg assembly is required.

Table 3 — 1/4" Control Tubing and Accessories

(2000' Coil,

⁄4" x

⁄8" Hard Reel)

Model 900-11 - Blue on Black color code

Model 900-12 - Yellow on Black color code

Model 900-13 - Pink on Black color code

Model 900-14 - White on Black color code

Model 900-21 - Adapter, compression to poly

⁄4" to

⁄4"

Model 900-24 - Adapter,

⁄8" Male NPT to

⁄4" poly

Model 900-30 - Metal Coupler,

⁄4" to

⁄4"

Model 900-40 - Retainer,

⁄4"

Model 900-50 - Metal Tee

⁄4" x

⁄4"

Model 900-70 - Tubing Plug,

⁄4"