Centrifugal pump protection. Avoids low and reverse flow in centrifugal pump operation, eliminating maintenance problems due to NPSH, superheating and premature wear of housing, disks and bearings three basic models:
Series 2500
Model VRM-HPM for high pressure pumps.
Series 1700
Model NVM for low to medium pressure pumps.
Series 1700
Model VL and NVL for low pressure pumps.