Drip Irrigation Emitter: Pressure equalizing emitters connect to your main irrigation line or the end of of 1/4" tubing. Pressure Compensation: The pressure equalizing drippers are equipped with a stable elastic silicone plate to maintain a uniform flow rate under different pressures from 10 to 50 PSI to ensure the accurate distribution of water and fertilizer. Wide Application: The drip irrigation drops are suitable for landscaping, garden beds, greenhouses, etc. It can also be used as a drip irrigation stabilizer. Pressure Compensating Dripper: The 4 gallon per hour pressure balancing emitter provides the same uniform flow rate from the from start to finish of pipes. Save water and time: Makes hands-free watering easy. This drip sprinkler for drip irrigation systems in the vegetable garden or greenhouse. Ideal for spot watering on an irrigation system. Simply open the water valve and you're done.