Rainbow's 320 series of inline chlorinators are designed for permanent installation in the return line of pools and spas. No need to drill any holes. Comes with standard 2 in. slip PVC pipe fittings and adapter for 1-1/2 in. slip installation. Works on the pressure side of the pump and is to be used with slow dissolving Trichlor tabs and sticks or bromine tabs and sticks. Includes a heavy-duty 1/2 in. control valve and a replaceable 1/2 in. check valve. Unit comes with feed line installed in the bottom of chlorinator for normal use but is also drilled and tapped at the top of chlorinator if additional chlorine/bromine dispersion is required.
Rainbow 300 Offline
Rainbow's 300 series of offline chlorinators are designed for existing pools and spas or where permanent installation into the return line is impractical. Works on the pressure side of the pump and is to be used with slow dissolving Trichlor tabs and sticks or bromine tabs and sticks. Includes an easy to adjust control valve and check valve.
Rainbow's 320 series of inline chlorinators are designed for permanent installation in the return line of pools and spas. No need to drill any holes. Comes with standard 2 in. slip PVC pipe fittings and adapter for 1-1/2 in. slip installation. Works on the pressure side of the pump and is to be used with slow dissolving Trichlor tabs and sticks or bromine tabs and sticks. Includes a heavy-duty 1/2 in. control valve and a replaceable 1/2 in. check valve. Unit comes with feed line installed in the bottom of chlorinator for normal use but is also drilled and tapped at the top of chlorinator if additional chlorine/bromine dispersion is required. 
Rainbow's 300 series of offline chlorinators are designed for existing pools and spas or where permanent installation into the return line is impractical. Works on the pressure side of the pump and is to be used with slow dissolving Trichlor tabs and sticks or bromine tabs and sticks. Includes an easy to adjust control valve and check valve. 
