Automatic pressure stations with MCE-P frequency converter for commercial buildings or agricultural irrigation. Automatic pressure station with 2 or 3 NKV pumps. NKV 10,15,20 S models have liquid contact parts made of AISI 304 stainless steel. NKV 32,45 models have pump body and upper flange in cataphorised cast iron, impellers, diffusers and pump casing in AISI 304 stainless steel. A variable speed motor, frequency converter MCE-P is installed on the pump and allows constant pressure adjustment. Each assembly is equipped with a protective distributor. The steel inlet and outlet piping is AISI 304 stainless steel. Version X, with water contact materials in AISI 316 stainless steel, is available on request. The assemblies are delivered assembled and are tested directly at the factory. D.CONNECT Box (installed in IP65 panel) is included in the package. The cloud service is manageable from internetofpumps.com or from the D.CONNECT App (for Android or iOS).