LK 924 Safety Group Many connection options Several pressure classes possible Compact Opening Pressure 0.3 MPa LK 924 / 925 SafteyGroup is a safety group for heating systems. The safety group contains manifold, manometer, safety valve and an air vent. 924 SafetyGroup has an automatic air vent with a float and 925 SafetyGroup has an automatic air vent with fibre discs. The manifold has two ½” connections for safety valve and for example an expansion vessel, one ⅜” connection for air vent.The manometer shall be mounted in one of the three ¼” connections, plug the other ¼” connections with supplied plugs. Depending on model the manifold has a female ¾” connection or a male 1” connection towards the heating system.The manometer, air vent with a float and one ½” connection on the manifold are provided with a PTFE seal.Safety valves in other pressure classes can be supplied upon request.