See all products of Accessories Thermal disinfection by-pass cartridges Replacement main balancing cartridge Accessory temperature gauge (for thermostatic regulators 116 series) Replacement bypass cartridge for thermal disinfection Insulation jacket for 1161, 1162, 1163 and 1164 ThermoSetter™ Insulation jacket for 1164 ThermoSetter™ Check valve (fits 116 ThermoSetter™) Isolation full-port ball valve Low lead brass pipe nipples