Efficient and maintenance-free, this durable corrosion-proof automatic chlorinators are ideal for new or existing pools or spas and work automatically with your pump and filter system. This automatic in-line chemical feeder is completely enclosed therefore there are no escaping fumes and it doesn't require any special venting. The easy-to-use integral dial control valve lets you accurately adjust the rate of chlorinating needed to keep your pool and spa sanitized. In-line chlorinators are designed to be directly installed to your existing pool plumbing set up using 1.5-inch female pipe ports. They tend to have fewer problems because they have fewer parts than off-line chlorinators.Details:In-line chemical feederFor use with existing pool plumbing9lb. tablet capacityFor use with 3" slow dissolving chlorine tabletsDial control valve lets you control and adjust the rate of feedThreaded cover for safe and convenient access to add tabletsCorrosion resistant construction for long lasting lifeEnclosed systemNo special venting required1.5" female threadSimple and easy installationPressure gauge up to 50 PSIMax output: 32lb./hr