From inside (document excerpt):
254/264 Series Valves Toro 254/264 Series plastic valves are extremely rugged and designed for reliable performance year after year. Specifying Information 2X4 X6 0X Flow Control 5–w/Flow Control 6–w/o Flow Control Body Threads 0–Male Thread x Male Thread 1–Male Thread x Barb 3 Size 3– /4 ” (20mm) 4–1 ” (25mm) For Example: When specifying a 1 ” (25mm) electric 264 Series Valve without flow control and with a male thread barb, you would specify: 2641604 Note: 3/4 ” (20mm) available with male x male thread without flow control only.
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Specifications 1 ” Models s Flow range: 5.0-45.0 GPM s Operating pressure: 20-150 PSI maximum s Manual flow control: adjustable to zero flow (254 Series) s Body styles: 1 ” male-threaded inlet and outlet 1 ” male-threaded inlet, 1 ” insert (barbed) outlet s Energy-efficient solenoid: 24 V a.c. Inrush: 0.30 amps, 7.20 VA Holding: 0.20 amps, 4.80 VA s Dimensions: 1 254 Series — 6 ” H x 4 /2 ” W 1 1 264 Series — 4 /2 ” H x 4 /2 ” W /4 ” Model Flow range: 0.5-15.0 GPM s Operating pressure: 15-150 PSI maximum s Body style: 3 /4 ” male-threaded inlet and outlet s Solenoid: 24 V a.c. Inrush: 0.25 amps, 6.00 VA Holding: 0.19 amps, 4.50 VA s Dimensions: 3 ” H x 4 ” W 3 1 ” Electric Male x Male w/Flow Control All Models s Burst pressure safety rating: 750 PSI s Manual bleed screw s 18 ” lead wires for easy-access installation s Self-cleaning, stainless-steel metering pin s Stainless-steel diaphragm differential spring for smooth, positive closing s Single-piece rubber diaphragm for reliable, leak-free valve closing ® s Glass-filled Zytel cap for stability under pressure ® s Zytel Super Tough and stainless-steel construction for exceptional durability s SEPTEMBER 2000 254/264 Series Valves Bidding Specifications The 1 ” 254 or [3/4 ” / 1 “] 264 Series valve shall be of globe configuration with a male-threaded inlet and [male-threaded/barbed] outlet connection. The valve cap shall be constructed of glass-filled Zytel® for stability under pressure. The diaphragm shall be of single-piece rubber construction to retain flexibility and provide maximum sealing throughout its area. The diaphragm assembly shall form a solid-piece component. All parts shall be serviceable without removing the valve from the line. The valve shall have a forward-flow design and an external manual downstream bleed/flush. The 254 Series valve shall have manual flow control with a hand-operated, rising-type flow-control stem with a control wheel/handle. 264 Series non-flow-control models shall be an available option. For 3/4 ” models, friction loss at 15 GPM shall not exceed 6.5 PSI, and for 1 ” models, friction loss at 45 GPM shall not exceed 10.5 PSI. The burst pressure safety rating shall be 750 PSI. An effluent flow-control knob shall be an available option on 254 Series models. Electric Models The valve shall be a normally closed configuration with 18 ” solenoid lead wires that attach to a removable 24 V a.c., 50/60 cycle solenoid with a waterproof coil. The valve shall have a self-cleaning, stainlesssteel metering pin to protect bleed ports and to purge contaminants without the use of a filter screen. The valve shall be developed, manufactured, qualified and released in the USA. The valve, model number __, shall be manufactured by The Toro Company, Irrigation Division, El Paso, Texas, USA.