LEIT 1 with 3/4″ or 1″ Anti-Siphon Valve

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LEIT 1 with 3/4″ or 1″ Anti-Siphon Valve

LEIT 1 with 3/4″ or 1″ Anti-Siphon Valve

DIG’s LEIT 1™ ASV single-station solar powered controller with a two-wire DC latching solenoid is available on a 3/4″ or 1” heavy duty anti-siphon valve for use in residential and commercial applications. Powered by a photovoltaic module with a patented microelectronic energy management system, the LEIT 1™ requires no batteries or direct sunlight to operate, and it is used above grade in any location where there is light. Distinguished among the LEIT-1™ features are 20 preset monthly historical Evapotranspiration (ET) programs for spray heads and drip irrigation, with an editing feature that can be used as part of the controller programming.

Features:

  • Environmentally friendly with no backup battery or AC power necessary; uses clean, renewable solar power
  • Power is provided by an internal, ultra-high efficiency photovoltaic module and microelectronic energy management system fueled by ambient light
  • Simple, icon-based intuitive programming
  • Simple Smart™ historical ET feature automatically adjusts irrigation schedules monthly
  • Power level meter indicates the approximate charge (energy available)
  • On activation, the controller indicates if irrigation is set to water for the day and if any of the additional programming features are active
  • Daily and monthly programming restriction options to comply with city and municipal watering restrictions
  • Semi-automatic and manual operation with timed countdown to off
  • Program On/Off button allows the user to turn off the controller and reactivate it as desired
  • Retractable coiled cord for easy programming and review
  • Utilizes RoHS compliant components
  • Reset option allows erasing of all programs to default settings except time, day, and date
  • Non-volatile memory holds programs indefinitely without batteries except date and time
  • Completely waterproof (IP68)
  • Rain sensor connection included
  • Internal bleed via the solenoid for system checkup and testing
  • Captured solenoid plunger and spring for easy maintenance
  • Efficient plastic anti-siphon valve with high flow
  • Three-year warranty

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How to Specify
MODEL DESCRIPTION
LEIT-1 Anti-siphon Valve
LEIT1 ASV-075 3/4 in.
LEIT1 ASV-100 1 in.

Controller Specifications:

  • Power source: ambient light (PVM)
  • Controller power input: 3,000 -100,000+LUX
  • Seven keypad buttons with integrated liquid crystal display
  • Temperature range: 38°F to +140°F (3°C to +60°C)
  • Solenoid: 7-12 VDC, two-way latching, normally closed
  • Solenoid control orifice: .065" (1.65 mm)
  • Encapsulated solenoid thread: 11/16"-12 UN male thread
  • Retractable solenoid wire: 8.1" (coiled length when extended, approximately 36")
  • Sensor connection: normally closed 6" (15 cm) yellow wire (16 AWG)
  • Solenoid adapter: 11/16"-12 UN female thread x 3/4”-20 UNEF male threaded
  • Materials:
    • Controller housing: high-impact plastic (polycarbonate)
    • Solenoid housing: glass-reinforced nylon
    • Plunger & spacer: 430F stainless steel
    • Plunger rubber cap: EPDM
    • O-ring: Buna-N
    • RoHS

Anti-siphon valve Specifications:

  • Valve type: anti-siphon valve with flow control
  • Valve sizes: 3/4" to 1" NPT or BSP
  • Valve inlet and outlet: female pipe thread (FNPT)
  • Operating pressure range: 20-150 PSI (1.4 -10.5 BAR)
  • Bonnet solenoid thread: 11/16"-12 UN
  • Diaphragm assembly: self-cleaning supported with guided seal
  • Flow rate: .25 to 25 GPM (.95-95 LPH-0.057 to 5.68 m3/h)
  • Materials:
    • Controller housing: high-impact plastic
    • Valve bonnet: nylon reinforced
    • Valve housing: PVC
    • Diaphragm: EPDM reinforced
    • Solenoid housing & retainer: nylon reinforced
    • Spring and plunger: stainless steel 430F
    • Bonnet bolts: Stainless Steel
    • Plunger rubber cap: EPDM
    • O-ring: Buna-N

Programming

  • Custom programming schedules with a weekly calendar, odd days, even days, or intervals from one to thirty (1-30) days utilizing yearly calendar with leap year
  • Five start times per day
  • Durations up to 5 hours and 59 minutes in -minute increments
  • Twenty preset historical ET programs available for 10 climate zones, with 10 for drip irrigation and 10 for spray heads, to use with any irrigation setup; includes the option to review the new calculated duration
  • Monthly seasonal adjustment with option to reduce the program duration setting to 0 or to increase it up to 200% in 5% increments without modifying the controller's program duration; also can be used to fine-tune the preset ET program for each month
  • Irrigation suspension for up to 99 days with auto-restart; resumes irrigation automatically
  • Program Off button allows the user to turn off the controller and reactivate it as desired
  • Manual On/Off button with semi-automatic feature utilizing the program runtime and shows the time left to run with quick override
  • Daily and monthly programming restriction feature allows controller to bypass irrigation schedules. Can be used to comply with city and municipal watering restrictions
Note: Installed the unit 6-12 inches above the highest downstream sprinkler head
Manuals
Videos & Articles
  • DIG ECO1 & LEIT 1 Solar Powered Controller: Programming
  • DIG LEIT1 ASV Solar Powered Timer with Anti-Siphon Valve: Installation
CAD Files