Home / Heating / Pyrox / Thermocouple Pyrox Mercury Cut Out 403 Thermocouple Pyrox Mercury Cut Out 403 Thermocouple to Suit most old model Pyrox heaters 304 models. Product ID: 1073A Categories: Heating, Pyrox Tag: 1073A Description Additional information Description Thermocouple to Suit most old model Pyrox heaters 304 models. Additional information PID 1073A Related products Thermocouple Braemar D45D55 600mm Igniter Sensor Assy 800MM 15379 Thermocouple Pyrox Mirco Switch 9mm Nut 580m R600 Knob Control 49s Burwood Heaters