This super downstream injector kit includes everything you need to start downstreaming. Just select a chemical injector, add some quick couplers and a chemical strainer. Use the Super Downstream Injector to bypass your pump when applying corrosive chemicals, detergents or acids to help maintain a longer life on your pump. Works with up to 300 feet of pressure hose. Prevent debris from entering the pump by using a Chemical Strainer. Soap enters through strainer preventing debris from entering the pump. This is a durable alternative to lightweight soap strainers. The step down hose barb will attach to either 1/4″ or 3/8″ hose. An internal brass weight keeps soap strainer in the bottom of the soap container. It includes a built-in stainless steel and viton check valve to prevent water flow back into the soap strainer.