The W-20 Spray / LV Foam Hose Drop Station is a combination low volume applicator for applying one chemical as foam and another as a chemical spray. This venturi injection system uses standard city water pressure (35 - 125 PSI) to draw and blend chemical concentrates into the water streams to create accurately diluted solutions using precision metering tips to control chemical usage. Rich, clinging foam is created by injecting compressed air into the foaming solution to greatly increase volume and coverage ability. The foam is then projected through the discharge hose and fan nozzle at distances up to 9 feet. Use the spray function to project a chemical spray in a fan pattern. With a flow rate of under 1 GPM, this unit is great for foaming and spraying virtually any sized area or object slowly and completely.