Magic Plastics 2" U Smart-Check Check Valve (0823-20MC) filterparts The Raypak thermostat knob is

The Raypak thermostat knob is designed for compatible R185

Filter cartridge for compatible spa and pool applications using the 12001 reference

Designed for compatible 105A

A spa control system helps coordinate several major spa functions from a single control platform

Magic Plastics 2" U Smart-Check Check Valve (0823-20MC) filterparts The Raypak thermostat knob isA check valve helps maintain one way flow in a compatible plumbing system, and this Magic Plastics Smart Check version is a 2 inch union style model using the 0823 20MC reference. Union style check valves are useful because they help make later service and replacement easier while still preserving dependable directional flow control. This part has practical value because the 2 inch union Smart Check format supports a service friendly plumbing layout