3.3 GPH Pressure Compensating Button Drip Emitter (Supertif) Black / Red

When you absolutely need to make sure all your plants get the right amount of water, you need a pressure compensating dripper. In addition to the standard internal labyrinth - used to regulate the flow rate of the dripper - they also include a silicone diaphragm, allowing them to react to pressure changes within the system and ensure a more consistent flow of water. This makes pressure compensating drippers ideal for systems with long runs of tubing, lots of hills, or a water source with inconsistent pressure output. Pressure compensation is only active between 8 and 50 PSI, so remember to use a pressure regulator to ensure proper function.

All drippers have a flow rate, which describes how much water will come out of the dripper in a given period of time. This is usually expressed in GPH, or Gallons Per Hour. A 3.3 GPH dripper like this one will emit 3.3 gallons of water over the course of an hour. 3.3 GPH drippers should only be used in the areas that need a lot more water than the rest of your garden, as they emit 3.3 times as much water as a standard 1 GPH dripper. Unless you have a good reason, it's best to stick with lower-flow drippers.