NAVADEAL 1 1/2" DN40 Brass Geyser Water Fountain Nozzle Spray Pond Sprinkler - For Garden Pond, Amusement Park, Museum, Library Geyser is a small to medium size injection nozzles that are independent on the water level. Because of the injection effect the surrounding air is suctioned in, intensively mixed and thrown high into the air by the injector jet aerating. Geyser nozzles are designed to produce columns of highly aerated water with a frothy effect. Material: Brass; Inlet: 1 1/2" DN40 Female Thread Working Pressure: 14.5-29.0 psi; Water Flow: 44.0-57.2 gpm; Jet Spray Height: 16-30 feet 100% MONEY BACK GUARANTEE- NAVAdeal are backed by 100% guarantee that you are fully satisfied with your product or receive your money back.