NAVA Universal Petunia Trumpet Fountain Nozzle Pond Spray (1/2" DN15 3/4" DN20) Flat lava is a small to medium size nozzle that creates a clear pulsating sheet of water in a lava form. When operated in a full sheet pattern there is a very little splash, ideal for both silent and windy locations. The relaxing sound of splashing water is particularly effective in silence wind-free locations like the water garden, indoor reception hall, or outdoor pool that are protected from the wind. Flat lava fountains are water level independent and can be located in dry areas. Material: Brass; Inlet: 1/2" DN15 Female Thread, 3/4" DN20 Male Thread Working Pressure: 0.7-1.2 psi; Water Flow: 6.6 gpm; Jet Spray Height: 1 ft 100% MONEY BACK GUARANTEE- NAVAdeal are backed by 100% guarantee that you are fully satisfied with your product or receive your money back.