Pressure Compensating Dripper: Balancing Every Drop of Water

Pressure compensating drippers have a unique feature: they can automatically adjust the water output of the dripper under different water pressure conditions to maintain a constant flow rate, effectively 'compensating' for fluctuations in water output caused by changes in water pressure.

The water output of traditional non-pressure compensating drippers varies with changes in water pressure, whereas pressure compensating drippers, through their internal structural design, can maintain stable water output even when water pressure changes, within a pressure range of 0.5–3.5 kg.

Pressure compensating drippers are suitable for farmland or orchards with significant terrain variations, irrigation systems with long pipelines, especially areas where the terminal water pressure is reduced, and high-value crops requiring uniform irrigation, such as grapes, olives, fruit trees, etc.

Pressure compensating drippers in 3 different colors and specifications

Structure

Upper housing
Maze-like core. It slows down the water flow in the channel, increases water flow resistance, and further controls the water output.
Elastic silicone diaphragm. It can deform in response to changes in water pressure, thereby adjusting the water output
Lower housing

Diagram of structural components of 4 pressure compensating drippers

Working Principle

Inside the pressure compensating dripper, there is an elastic silicone diaphragm. When water flows through the dripper, the water pressure causes the diaphragm to deform or move, thereby adjusting the size of the cross-section through which the water flows.

At low pressure: The diaphragm relaxes, the gap between the diaphragm and the outlet increases, allowing more water to pass through, maintaining the water output.
At high pressure: The diaphragm is compressed and deformed, reducing the size of the water flow channel, thereby restricting the volume of water passing through, keeping the water output stable.
Self-cleaning: When water flows through the elastic silicone diaphragm, the diaphragm makes slight movements due to the impact of the water flow, preventing the accumulation of impurities on the diaphragm; When water flows through the narrow labyrinth channel, it generates a turbulent effect with scouring force, which can remove impurities attached to the dripper.

Features

The pressure compensating system is equipped with a flow-stabilizing elastic silicone diaphragm to maintain uniform irrigation under different pressures.
The dripper can be opened for easy cleaning and maintenance.
Made from high-quality plastic materials, it is corrosion-resistant, UV-resistant, and anti-aging, and has a long service life.
It has a self-cleaning function, not easy to clog.
Small size, compact structure, easy to install.

Specifications

Pressure compensating drippers in 3 different dimensions

Table 1: Pressure Compensating Dripper Specifications
Color	Flow Rate L/h	Pressure kg	Weight g	Material
Yellow	2	0.5–3.5	3.6	PP
Black	4	0.5–3.5	3.6	PP
Blue	8	0.5–3.5	3.6	PP

Installation Method

Directly installed on the pipeline. Use a hole punch to punch holes in the PE pipe, and directly insert the dripper into the pipe. Direct installation is simple and quick, suitable for surface irrigation or near-ground irrigation applications.
Used for connecting 1/4" drip tubes. Typically, a hole is punched in the water supply pipe, a 1/4" drip tube is connected, and then the dripper is connected to the 1/4" drip tube through a connector. Highly flexible, often used in systems where the dripper needs to be installed at a certain height or combined with arrow dipper, micro sprinkler, and other components.

Directly Installed on The Pipeline

Pressure compensating dripper for connecting 1/4 inch drip tubes

For Connecting 1/4" Drip Tubes