It's all about the pressure! And drip irrigation requires low pressure--lower than most home faucets or hydrants provide. That's why we feature the pressure regulators on this page--a critical part for most drip irrigation systems. A simple pressure gauge (found on "Tools" page) will measure your water pressure. 

Pressure regulators are used to reduce  incoming water pressure that is too high for drip emitters and fittings. Some city water districts or rural areas supply water at very high pressure. Homeowner pumps also can deliver water at excessively high pressure. The regulator must be sized to match the flow of the drip system. To help you figure out which pressure regulator you should use, we have included optimal or maximum pressure ratings for the emitters and sprinklers we offer.

While most emitter tubing and emitters for drip systems operate well with regulators rated at from  10-30 PSI systems with mini-sprinklers and misters operate best in the 20-40 PSI range; and Tape systems should operate within the  8-15 PSI range.)

 Regulators should be situated after valves or timers because they can be damaged by constant pressure. They are available with hose or pipe threads and male or female inlets and outlets. So when you're chosing a regulator and a filter, make sure the connection are compatible. Adapters for differing threads can be found on "adaptors" page ( listed under ACCESSORIES).

• FPT=Female Pipe Threads, MPT=Male Pipe Threads, FHT=Female Hose Threads, MHT=Male Hose Threads