Prevent debris from entering the pump by using this Chemical Strainer. Soap enters through a 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 the 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.