Heimeier return Heimeier RTL Heimeier through, external thread R 2000 / 2 HEIMEIER return temperature limiter Lower part of valve: valve housing made of corrosion-resistant, dezincification-free gunmetal, nickel-plated. With stainless steel spindle and double O-ring seal. External O-ring can be replaced without draining the system. Perm. Operating temperature TB 120 Grd. C. Perm. Operating pressure PB 10 bar. Sensor element scale hood white RAL 9016. Expanded thermostat. Concealed upper and lower limits of the temperature range or blocking of a setting by stop clips. Over-stroke protection. Setpoint 1930 to 50 degrees C. Remark 1930 -5. Heimeier : Heimeier Type: RTL Connection: external thread R 2000 / 2 Version: Art . No. 9174-02.800