Toro Owners Manual - Enlarge page 1 of 2
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P-220 Series Plastic Valves Installation Instructions Introduction Built on proven technologies and components, the Toro P-220 Series plastic valves are tough, have excellent performance and are extremely reliable. A self-cleaning metering system and 220 PSI rating assures years of trouble-free performance. In commercial installations, it is advantageous to install the valves in a valve box. This enables the valve to be easily located, accessed and maintained.
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The use of clean aggregate in the the bottom of the box, and locating the valve box away from structures, potential hardscaping features (such as sidewalks) and large planting locations is recommended. Additionally, valve box locations generally should be in shrub beds and at right angles to structure locations. If the valves are installed below grade without a valve box, access to the top of the valve should be provided by using a section of 4 ” PVC pipe and a Toro Valve Cover (P/N 850-00) installed directly over each valve. P-220, 1 ” P-220, 11/2 ” P-220, 2 ” P-220, 3 ” Features: s s 220 PSI maximum pressure rating Removable, self-cleaning metering system Precise pressure control with compact EZReg dial design (pressure regulating models) Pressure regulated in electric and manual modes, serviceable under pressure Schrader-type valve for pressure gauge attachment Manual flow control: adjustable to zero flow Internal manual bleed screw: bleeds internally downstream External manual bleed screw: bleeds to atmosphere, allows cleaning of metering rod and provides maximum flushing Models: P-220 Series electric, and electric pressure regulating 1 “, 11/2 “, 2 ” and 3 ” Body Style: Globe/Angle with Female Threads (all models) BSP Threads Available Dimensions The valve can be installed at any angle without affecting operation. · The valve body plug and o-ring must be properly installed in the unused inlet. · Use direct-burial wire, utilizing different color codes for each station control wire and one color for the common wire to all valves. · 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. · Leaving a wire expansion loop at each valve location on long-run wire lengths is recommended. Valve Operation and Adjustment Flow Control The flow control is used to reduce the flow and pressure to valve outlet. By turning the control handle clockwise, the flow will be gradually 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 or for valve zone fine tuning. Internal Manual Bleed Knob The internal manual bleed system is used to manually operate the valve. Turning the internal bleed knob (located beneath the solenoid) counterclockwise allows water to bleed downstream from the diaphragm chamber. Internal pressure is relieved from the top of the diaphragm, allowing the valve to open.