Skip to content
Free shipping on your first order* Apply Discount
Free shipping on your first order* Apply Discount

Irritrol Dual Check Backflow Preventer

SKU 101DC20
Original price $0.00 - Original price $0.00
Original price
$105.34
$73.22 - $109.10
Current price $105.34
Excl. GST
  • Mastercard
  • Shop Pay
  • Union Pay
  • Visa

Irritrol Dual Check Backflow Preventer

The Dual Check Valve provides protection to the potable water supply from contamination in low hazard applications like meter connections on domestic properties. 

Features

  • Protects against back pressure and back siphonage 
  • Suitable for low hazard applications 
  • Compact and lightweight
  • Corrosion resistant
  • Independently operating check valves
  • Operating temperature range of 1°C to 60°C
  • Suitable for vertical and horizontal installations
  • Approved to AS 2845-1
Specifications
Materials DR Brass (body + covers); stainless steel (springs)
Size (Model No)
20mm (101DC20)
Dimensions 91 x 46mm
Size (Model No) 25 mm (101DC25)
Dimensions 92 x 46mm
Inlet/Outlet BSP Female 
Working Pressure range 220 - 1200kPa

Materials Plastic
Size (Model No)
20mm (101DC20P)
Dimensions 91 x 46mm
Size (Model No) 25mm (101DC25P)
Dimensions 92 x 46mm
Inlet/Outlet BSP Female 
Working Pressure Range 220 - 1050kPa
Operating Temperature Range 1˚C - 60˚C
     Documentation 
     Videos  

     No Video Available 

     Compatible with 

    Threaded Fittings
    Irritrol Dual Check Backflow Preventers are compatible with any Threaded fitting of the appropriate size (Click here to view)

     Reviews  

     

    FAQ's

    What does a solenoid valve do in an irrigation system?

    A solenoid valve acts like a switch for water flow in irrigation. When activated by an irrigation controller, it opens an internal passage, allowing water to flow to a specific zone (sprinklers, drip system) and closes when shut off by the controller, stopping water flow.

    What is a solenoid valve diaphragm used for?

    In a solenoid valve, the diaphragm is a crucial component that acts as a barrier between the control mechanism (electrical coil) and the fluid being controlled (water, air, etc.). It has two main functions:

    Sealing: The diaphragm separates the pressurised fluid from the electrical components of the valve. This prevents water damage to the coil and ensures a safe electrical operation.

    Controlling Flow: The diaphragm moves based on the energising or de-energising of the solenoid coil. When energised, the coil creates a magnetic field that pulls the diaphragm open, allowing fluid to flow through the valve. Conversely, when de-energised, the magnetic field collapses, and a spring or fluid pressure pushes the diaphragm back to its closed position, stopping the flow.

    How long do valve boxes last?

    With proper care, many years.

    Free Shipping

    When you spend $250+*

    Give Us A Call

    09 415 0300

    35 YEARS

    NZ Owned & Operated

    NATIONWIDE SERVICING

    Experienced Irrigation Technicians