1. Blackmer Vane
vs.
Internal Gear

2. Blackmer Vane vs. Internal Gear
Advantages and disadvantages of each design
Key features and benefits of vane pumps
Key issues to be aware of
how to bring more value to your customer

3. Internal Gear Pump Advantages and Disadvantages*
only two moving parts
one stuffing box
operates in either direction
non-pulsating flow
ideal for viscous fluids
easy to maintain
Disadvantages
medium speed and pressure
bearing in pumpage
overhung load on shaft bearing
*NOTE: from Viking’s Web and Bulletin AD-12

4. Blackmer Vane Pump Advantages and Disadvantages*
thin fluids
sometimes preferred for solvents and gases
can run dry for short periods
develops good vacuum
one stuffing box (some models)
Disadvantages
not suitable for high viscosity
two stuffing boxes (some models)
not good with abrasives
*NOTE: from Viking’s Web and Bulletin AD-12

5. Internal Gear Pump Disadvantages
Overhung (cantilevered) Load
forces attempt to rotate drive shaft at the fulcrum - bearing
drive shaft and idler pin are at different center lines
gears because of forces and different centerlines of gears - do not “mesh”
results - heavy load on idler pin and bearing (note: this bearing is always in the pumpage)
*NOTE: from Viking’s Web and Bulletin AD-12

6. Internal Gear Pump Disadvantages
Bearing in Pumpage
ask if there is a pump problem, if the answer is no, then ask if there is “idler pin wear”
the heavy loads always create this problem and wear
this wear pattern on the pin will also mean that the pump has heavy wear in the head, casing, drive gear and idler gear …
basically the pump is “easy to maintain” because its disposable
*NOTE: from Viking’s Web and Bulletin AD-12

7. Addressing the Disadvantages of Internal Gear Pump
Cantilevered load can be corrected by symmetrical bearings ...
… the bearings can be removed from the the pumpage by adding seals …
the solution is a Blackmer!

8. Blackmer Vane Pump Advantages
Thin Fluids ...
Preferred for solvents …
Can run dry …
Develops good vacuum ...
Blackmer has a strong awareness and preference in applications with thin products:
solvents
fuel oils, diesels
gases - propane, butane, CO2
and with applications requiring priming, line stripping and dry running:
terminals
truck and Rail Road car unloading

9. Vane Pump Advantage Thin Fluids
Blackmer vane pumps are more efficient on thin fluids because the design incorporates
close tolerances ...
and symmetrical loads ...
for reliability and preference when handling thin fluids.

10. Vane Pump Advantage Thin Fluids
Additionally, Blackmer vane pumps are more efficient on thin fluids because the design incorporates
non-metallic vanes ...
actuated by the system pressure (movement initiated by push-rods and augmented by centrifugal force) …
the vanes adjust to maintain efficiency and the customers operational requirements over the life of the pump
for reliability and preference when handling thin fluids.

11. Blackmer Vs. VIKING Mechanical Efficiency Comparison at 28 SSU and 75 PSI
GPM

12. Viscous Fluid Handling Blackmer Vane Pump vs
Viscous Fluid Handling Blackmer Vane Pump vs. Internal Gear Pump Advantage or Disadvantage??
Lower peripheral
speeds (larger drive
rotor on gear) …
and surface shear
(one pump chamber in vane
vs. six in this presentation) …
allows the vane pump to
perform efficiently on
viscous fluids.
Additionally, Blackmer will maintain that efficiency! 2 4 1

13. Blackmer Vs. VIKING Mechanical Efficiency Comparison at 750 SSU and 100 PSI
GPM

14. Blackmer Vs. VIKING Mechanical Efficiency Comparison at 25,000 SSU and 100 PSI
GPM

15. Vane Pump Abrasive Handling?
Blackmer’s efficiency advantage can, without consideration, become a problem on abrasive fluids … the vanes want to adjust to do 100% … this can greatly accelerate wear.
A gear pump will wear in and transfer fluid at low efficiency … this allows it to be more tolerant with abrasives.
For success with a vane … care must be taken evaluating the abrasive hardness, fluid medium and a critical evaluation of pump RPM!

16. Questions and concerns when replacing a gear pump with a vane pump
A gear pump may be selected - oversize - in an attempt to prolong service life … a vane pump should be sized to provide the customers requirements (or +10%) … running a pump faster then it needs will accelerate wear.
A gear pump may use a variable speed drive to compensate for wear … a vane pump will compensate for wear, by design … variable speed is not required or recommended.

17. Matching the customers flow and life expectations with pump characteristics 25 GPM and 12 period life expectancy

18. Matching the customers flow and life expectations with pump characteristics over-sizing the gear pump to wear in

19. Matching the customers flow and life expectations with pump characteristics vane pump slower with 10% more flow

20. Matching the customers flow and life expectations with pump characteristics

21. Blackmer Vane Pump Additional Considerations
Relief Valve Performance
Mag-Drive Comparisons
Life Cycle Costs
Viking vs. Blackmer model comparison chart
Pump Options
*NOTE: from Viking’s Web and Bulletin AD-12

22. Relief Valves
Internal relief valves are recommended to protect the pump
Blackmer’s unique valve is designed for a “set pressure” relief and does not modulate
This allows for a more efficient motor selection

23. Blackmer vs. Viking Relief Valve’s Performance

24. Viking Mag-Drive Viking Support Bearing needed to …
maximize life at motor speed operation
extend seal life
Viking Mag-Drive
no external support bearing
minimal cantilevered control
gaskets used to shim and seal head to casing
Closer to General Purpose design not Heavy Duty
External Bearing
Head Seal

25. Blackmer Mag-coupled Vane Pump
Blackmer Advantages
Symmetrical Bearing Support
Eliminates Cantilevered Loads
Minimal Axial Loads
Efficient Operation from to 5000 cps
Consistent Performance
Dry Run capability

26. Life Cycle Costs Assumptions: capital costs is 10% of total ownership
Vane Pump vs. Gear
Capital Cost are equal
Vane pump is 24% more efficient (on average of 5 models at 3 viscosity's)
Average Energy Savings / pump = $900
Energy savings pays for the pump!

27. Blackmer vane pumps cross- referenced to
Viking internal gear pumps

28. Pump Options Thin Fluids Viscous Fluids
Blackmer “X” Series with non-metallic vanes
Viking with carbon bushings (non-metallic idler gear on 4195)
Viscous Fluids
Blackmer metal vanes - EC rotor on HXL
Viking EC drive rotor and steel rotor

29. Life Cycle Cost Advantage’s of Blackmer Vane Pumps
Reliability, Maintenance and Energy Advantages on:
thin fluids
the preferred technology for solvents and gases
applications requiring run dry capability
applications requiring good vacuum for lift, priming and line stripping
Energy advantage on:
viscous fluids
Blackmer can make your customer
more profitable!