Commercial Pump Specification Tools

Taco Flanges All casings available with Class 125 flanges or Class 250 flanges

Heavier Construction / Durability Taco FI2510 B&G 2½ BB Taco Casting = 76 lb B&G Casting = 64 lb

Superior Wall Thickness All Taco volutes are cast to a thickness required for 250psi working pressure Taco FI2510 B&G 2½ BB

Additional Casing Features ALL models are Flanged Anti-rotational vane Drain

Externally Flushed Seal We have the ability to externally flush our seal Taco provides standard seal flush tap

Externally Flushed Seal External Flush We have given the commercial sector the ability to adopt the best maintenance practices used in critical municipal applications.

B&G does NOT provide standard seal flush taps. B&G Cover Untapped B&G does NOT provide standard seal flush taps. Cover NOT tapped. B&G 2½ BB Cover

All casings / volutes are tapped for gauges and flush lines Standard Tappings All casings / volutes are tapped for gauges and flush lines Tappings

Standard Gauge Tappings All casings / volutes are tapped for gauge installation

Centerline Discharge All Taco FI volutes are centerline discharge Centerline geometry does not trap air Piping Load Competition uses overhanging tangential discharge Centerline discharge evenly distributes the piping loads to the base Overhanging tangential discharge volutes are less desirable because they incur both bending & torsion stresses

Foot Mounted Volutes Piping Load Better suited to support inevitable piping loads associated with improper installation Taco foot mounted volutes with feet positioned directly below the pipe flange provide better support Foot

Lost Foam Impellers Tools are made of aluminum No tool wear when injecting foam Each piece is dimensionally identical

Foam impellers prior to casting Lost Foam Impellers Foam impellers prior to casting

Lost Foam Process Dip foam in clay slurry… ….and let dry

Lost Foam Impellers Lost foam is precision investment casting process Foam is vaporized and replaced by molten bronze

Lost Foam Impellers Advantages: Superior surface quality creating smoother passageways Higher efficiencies & hydraulic performance Repeatability No tooling wear

Sand Cast Impellers Competitors use a sand casting process Over time, sand packing abrades and degrades patterns “This is like making a copy of a copy of a copy indefinitely.”

Lost Foam Impellers The difference… Domestic Sand Cast Lost Foam

Lost Foam Impellers The difference… Offshore Sand Cast Lost Foam

Taco FI2510 bearing assembly with impeller and cut-away cover Dry Shaft Design Taco FI2510 bearing assembly with impeller and cut-away cover

Dry Shaft Design Benefits: More reliable by preventing shaft corrosion Easier to service Sleeve slides on with no additional tools required. Competition’s press/shrunk/glue-on sleeves difficult to replace

Dry Shaft Design Cover Impeller Stationary Seat Pump Shaft Slip-on Shaft Sleeve Rotating Element

Seal Components Sleeve O-Ring Slip-on Shaft Sleeve Rotating Element Stationary Seat

Dry Shaft Design EPT O-ring inserted into shaft sleeve EPT bellows forms tight seal between rotating element and bronze sleeve. Carbon rotating element (shiny black) Forms seal against the stationary ceramic seat mounted in cover Bronze Sleeve ASTM B584-932 SAE660 Retainer & spring are 316 SS

Dry Shaft Design Ceramic Seat EPT Elastomer Cup Stationary Seat Pump Shaft Cover

O-Ring creates seal against back of impeller Dry Shaft Design O-Ring creates seal against back of impeller Pump shaft

Back of impeller is sealed against shaft sleeve o-ring Dry Shaft Design Back of impeller is sealed against shaft sleeve o-ring Impeller Cover

Dry Shaft Design Impeller washer Impeller machined sealing surface Impeller washer EPT O-ring Impeller washer o-ring forms tight seal on smooth machined surface on front of impeller Dowdy Washer w/ EPT Elastomer Impeller bolt Dowdy washer provides tight seal between impeller washer & bolt

B&G Shaft Sleeve B&G 2½ BB Bearing Frame Permanently affixed shaft sleeve makes maintenance difficult B&G utilizes glue Armstrong utilizes shrink fit B&G 2½ BB Bearing Frame

Factory Installed Drain Pan All pumps should have a drain pan per best practices Moisture buildup Seal leaks Chilled water pump sweating .1875 Thick Steel

Superior Base Taco FI2510 Base B&G 2½ BB Base

Superior Base B&G 2½ BB Base Taco FI2510 Base

Superior Bearing Frame Heavier Casting Taco FI2510 Casting 24.3 lb B&G 2½ BB Casting 12.5 lb

Superior Shaft Larger shaft and larger maintenance free bearings Taco FI2510 Shaft 13.1 lb B&G 2½ BB Shaft 4.35 lb Note: Sleeve could not be removed

Forsheda Seals All bearing frames come standard with Forsheda seals Protects the bearings from external moisture and airborne contaminants. None of the competitors do this. Forsheda Seals

Pump Couplings Woods Dura-Flex Couplings standard Competitor Ideal for all applications Superior for variable speed applications Competitor Not desirable for all applications In variable speed applications, constant loading & unloading of coupling causes rubber insert to vibrate & wear, resulting in premature failure

Taco Design Philosophy Minimize the need to EVER service the pump Resulting in a minimum number of seals and bearings throughout the entire product line Owners spend significantly less maintenance dollars Owners use less storage space

B&G Philosophy What happens when you don’t use a minimum number of seals and bearings? Requires owner to stock MORE replacement parts Requires more space Increases storage costs

Taco pumps require minimal replacement parts Taco Parts Philosophy Taco pumps require minimal replacement parts These gaskets, seals & bearings cover the entire line of Taco pumps!!

Pump Maintenance Issues Overview of Industry Pump Maintenance Issues Majority of pump UNITS shipped are smaller inline pumps Overall, our industry does not offer the end user a robust, simple inline pump Majority of maintenance hours are spent on smaller pumps Majority of maintenance dollars are spent on larger pumps Most manufacturers want to maximize their profit opportunity on the installed base of their products (All pumps, small to large) They try to do this in 2 ways: Use a design that inherently requires service Use a part numbering system that implies you need a unique new part # (SKU) for each model of pump you own Taco’s entire product line addresses ALL of these points i.e. 1600 & 00 offering vs. B&G Series 60

KS Seal Inside Seal Outside Seal

Defensive strategy for VSC TACO provides support for alternative layouts with Taco products