Commercial Pump

Specification Tools

Taco Flanges

• All casings available with Class 125 flanges or Class 250 flanges

Heavier Construction / Durability

Taco Casting = 76 lb B&G Casting = 64 lbTaco FI2510 B&G 2½ BB

Superior Wall ThicknessAll Taco volutes are cast to a thickness required for 250psi working

pressure

Taco FI2510 B&G 2½ BB

Additional Casing FeaturesALL models are

Flanged

Anti-rotational vane

Drain

Externally Flushed SealWe have the ability to externally flush our seal

Taco provides standard seal

flush tap

External Flush

• We have given the commercial sector the ability to adopt the best maintenance practices used in critical municipal applications.

Externally Flushed Seal

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

Tappings

All casings / volutes are tapped for gauge installation

Standard Gauge Tappings

Overhanging tangential discharge volutes are less desirable because they incur both bending & torsion stresses

Competition uses overhanging tangential discharge

All Taco FI volutes are centerline discharge

Centerline discharge evenly distributes the

piping loads to the base

Piping Load

Centerline DischargeCenterline geometry does not trap air

• Better suited to support inevitable piping loads associated with improper installation

Piping Load

Foot

Foot Mounted Volutes

• Taco foot mounted volutes with feet positioned directly below the pipe flange provide better support

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

Lost Foam ImpellersFoam impellers prior to casting

Dip foam in clay slurry…

Lost Foam Process

….and let dry

• 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

Lost Foam Impellers

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.”

• The difference…

Lost Foam Impellers

Lost Foam

Domestic Sand Cast

• The difference…

Lost Foam Impellers

Lost FoamOffshore Sand

Cast

Dry Shaft Design

Taco FI2510 bearing assembly with impeller and cut-away cover

• 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

Impeller

Slip-on Shaft Sleeve

Stationary Seat

Cover

Rotating Element

Dry Shaft Design

Pump Shaft

Seal Components

Slip-on Shaft Sleeve

Rotating Element

Stationary Seat

Sleeve O-Ring

Carbon rotating element (shiny black)

Forms seal against the stationary ceramic seat

mounted in cover

EPT O-ring inserted into shaft

sleeve

EPT bellows forms tight seal between

rotating element and bronze sleeve.

Dry Shaft Design

Retainer & spring are 316 SS

Bronze Sleeve

ASTM B584-932

SAE660

Stationary Seat

Pump Shaft

Dry Shaft Design

Cover

EPT Elastomer

Cup

Ceramic Seat

Dry Shaft Design

O-Ring creates seal against back of impeller

Pump shaft

Dry Shaft Design

Back of impeller is sealed against

shaft sleeve o-ring

Impeller Cover

Dry Shaft Design

EPT O-ring Impeller machined sealing surface

Impeller washer

Impeller bolt

Dowdy washer provides tight seal between impeller

washer & bolt

Impeller washer o-ring forms tight seal on smooth machined surface on front of impeller

Impeller washer

Dowdy Washer w/

EPT Elastomer

B&G Shaft SleevePermanently affixed shaft sleeve

makes maintenance difficult

• B&G utilizes glue

• Armstrong utilizes shrink fit

B&G 2½ BB Bearing Frame

• All pumps should have a drain pan per best practices

• Moisture buildup– Seal leaks – Chilled water pump sweating

• .1875 Thick Steel

Factory Installed Drain Pan

Superior Base

Taco FI2510 Base

B&G 2½ BB Base

Superior Base

Taco

FI2510 Base

B&G

2½ BB Base

Heavier Casting

Superior Bearing Frame

Taco FI2510 Casting

24.3 lbB&G 2½ BB Casting

12.5 lb

Larger shaft and larger maintenance free bearings

Superior Shaft

Taco FI2510 Shaft

13.1 lb

B&G 2½ BB Shaft

4.35 lb

Note: Sleeve could not be removed

• 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

Forsheda Seals

• Woods Dura-Flex Couplings standard

– 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

Pump Couplings

• Minimize the need to EVER service the pump

Taco Design Philosophy

– 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 PhilosophyWhat happens when you don’t use a minimum number of seals and bearings?

Requires more space

Increases storage costs

Requires owner to stock MORE replacement parts

Taco pumps require minimal replacement parts

These gaskets, seals & bearings cover the entire line of Taco pumps!!

Taco Parts Philosophy

• Majority of pump UNITS shipped are smaller inline pumps

Overview of Industry

• 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

Pump Maintenance Issues

• Taco’s entire product line addresses ALL of these points– i.e. 1600 & 00 offering vs. B&G Series 60

KS Seal

Outside Seal

Inside Seal

• TACO provides support for alternative layouts with Taco products

Defensive strategy for VSC