Drip Irrigation Pressure Regulator and Filter 25 PSI Water Backflow Preventer for 3/4'' Garden/Faucet Hose Thread and Drip Irrigation Inline Y Filter 3/4" x 3/4" FHT Hose Connection (2 Pack)

Works well, easy installation. Recommend using Teflon tape on threads and do not over tighten. Follow instructions for installation and orient the filter vertically to give you easy access to clean and good water flow.

...these work well, and fairly priced. Note to use the Teflon Tape to suit the types of thread, and add layers till you find the right fit--snug, but threadable--for no leaks. (Four stars as they're new and though the filter has been inspected, I've not yet had to clean it, see how it wears, etc.)

Two well made pressure regulators and irrigation filters for the price of one. These are made from thick, heavy weight plastic and include brass fittings for changing male to female hose ends. Good standard size fits on most hose end lines and does a great job of regulating the pressure for my drip irrigation line too. Added bonus that it has a fairly large in line filter to keep out fines and debris.

Both back-pressure valves started leaking within 40 days of use. Installation required additional adapters. First started leaking just over a month after install. I replaced with the second unit, started leaking 15-20 days later. There is a mesh pre-filter BEFORE the unit, and they both failed anyhow. Waiting to hear from seller.

This thing seems unnecessarily large and adds a lot of weight to hang off a faucet. I have no way of verifying the pressure reduction, but it sure seems like it will meet the advertised 15gpm flow. My flow meter maxes out at 12gpm and handily maxes out. The set would have earned another star if they included a better hose thread adapter - it doesn't swivel and there's very little shoulder inside for a gasket to seat (and you'll need your own gasket). Finally, don't bother with the included teflon tape - it's so thin you can see through it and requires more than twice as many wraps as better tapes do.

Great for raised bed garden irrigation.

Unit failed while I was out of town providing me with a huge water bill