Utilizing the unique Blackmer® sliding vane design, these Heavy Duty Line positive displacement rotary pumps offer the best combined characteristics of sustained high level performance, energy efficiency, trouble-free operation and low maintenance cost.
The HXL pumps are constructed of ductile iron (ASTM 536) that will withstand sudden thermal shock and stress well beyond the capabilities of cast iron. All models are fitted with replaceable casing, liners and end discs that allow easy rebuilding of the pump, without removing the pump from the piping. Models are available in 6-, 8- and 10-in ANSI flanged port sizes with maximum rated capacities of 755, 1,228 and 2,220 gpm (171, 279, 504 m3/h) respectively. Standard elastomers include FKM O-rings. Optional bolt-on relief valves are designed to protect the pump from excessive pressure are available for all sizes.
Features and Benefits
Ductile-iron construction with bolt on, internal relief valve
Internal mechanical seals have reduced speeds, allowing for extended dry run without failure and continuous operation with non-lubricating liquids
Replaceable casing liners and end discs allow easy rebuilding of the pumping chamber to like-new condition without removing the pump from the piping
High volumetric efficiency and symmetrical bearing support means less required horsepower than other PD pumps, meaning a cost savings on both motor operation and electricity
Blackmer mechanical seal and ball bearing construction provide maximum reliability
Symmetrical bearing support assures even loading and wear for long life
Adjustable relief valve protects pump against excessive pressures
External ball bearings are isolated from pumpage by mechanical seals to maximize bearing life and minimize contamination risk
Advantages of sliding vane technology:
Unique sliding-vane pump design self-adjusts for wear to maintain flow rates
Excellent self-priming and dry-run capabilities
Sliding vane design provides sustained performance and trouble-free operation
Easy maintenance: vanes can be easily replaced without removing the pump from the piping system
