2-step de- and aeration valve for sewage water pump discharge pipes. Due to a free suspended floater and dispense with lever, joints and pivot the valve is insensitive against solid and sedimentation.

2-way gas discharge valve for automatically exhausting of liquid filled components of installations, so as high points of discharge pipes, boiler, filter tanks etc.

Self controlled combinated ball type non return and deaeration valve to exhaust air and gas from pipes and vessels under vacuum or pressure (max. 2 bar) conditions by means of a vacuum pump.