3/4"HOSE PRESS REGULATOR: 3/4" preset hose pressure regulator. Maintains 15-20 P.S.I. for circuits totaling up to 360 GPH. 3/4" hose thread inlet x 3/4" hose thread outlet. Stays flexible and is to be used for drip watering only. Complete instructions on back of card. Packed 1 per card.