Blackmer, part of PSG, adds the NPH and XH Series Sliding Vane Pump models to its NP and X Series product families. Both the XH Series pumps, which are designed to handle a wide range of non-corrosive and non-abrasive industrial liquids and petroleum products, and the NPH Series pumps, which are suitable for handling viscous or shear-sensitive fluids, feature the same performance characteristics as the NP and X Series models and are available in 2”, 2.5”, 3” and 4” (51 mm, 64 mm, 76 mm and 102 mm) sizes.
NPH and XH Series pump users can choose between 90- and 180-degree porting, which gives the NPH and XH pumps a level of operational flexibility that gear pumps and other technologies do not possess, according to Blackmer.
Standard features on both the NPH and XH Series pumps include an internal relief valve that protects against excessive pressures; a smaller motor; high volumetric efficiency; symmetrical bearing support for extended life; high suction-lift capability that makes them suitable for pumping from underground tanks, bulk-plant service and aircraft refueling; self-priming and dry-run capability, and the sliding vane method of operation.
