The capillary dripper is one of the first type of drippers. The capacity of the capillary dripper is determined by: the working pressure, length and inner diameter of the capillary. This results in a wide variety of capacities. The flow in the capillary is not turbulent. The capacities per dripper can differ considerably (higher CV value), especially when the drippers get a little older and therefore more polluted. The clogging sensitivity is higher than of its later successors such as: the Cobra, Woodpecker and Kameleon.

From 2016, Revaho uses a new method of coding capillary drippers. The inner diameter is indicated, by means of a letter coding. On the microtube a letter (A, B, C, D, E) is printed that corresponds with the following coding and capacity table. Capillary drippers delivered before 2015 are provided with a number (1,2,3,4), which indicates the capacity at 0.5 bar.

Characteristics:

• Basic dripper with pressure-sensitive operation
• 5 codes (A, B, C, D, E)
• Lowest mutual uniformity compared to more modern drippers
• Straight cut microtube instead of angled (per 1-1-2015) for a better connection to the screw connector

Application

• Various crops with relatively short bed distances.

Technical data

Encoding microtube

Type A = 3.2 x 0.6 (1 litre/hour at 85 cm at 0.5 bar)
Type B = 3.2 x 0.7 (1.5 litre/hour at 85 cm at 0.5 bar)
Type C = 3.2 x 0.8 (2 litre/hour at 85 cm at 0.5 bar)
Type D = 3.2 x 0.9 (3 litre/hour at 85 cm at 0.5 bar)
Type E = 3.2 x 1.0 (4 litre/hour at 85 cm at 0.5 bar)