HTO Pump Line

™

HTO 80 120 180 300HTO Pump – How It Came To Be

The HTO 80 was developed in the early 1990’s…

Developed to pump hot oil thru commercial food preparation equipment

Led to our patented design

HTO pump line has grown into the four models used today

HTO products serve in multiple markets today

Tempuflo™ is a registered trademark representing the HTO series of pumps.

HTO 80 120 180 300HTO Pump – Standard Construction

Ductile Iron construction

Carbon vs. Silicon Carbide mechanical seal (carbon/Ni-resist/Viton for applications <425°F)

Viton elastomers

Discharge port can be mounted in the vertical or horizontal position

NPT threaded ports on HTO 80 and HTO 120 (ANSI 150# flat flanges available)

ANSI 150# flat flanges on HTO 180 and HTO 300

Offered as a close coupled unit with standard NEMA “C-face” motors, PumPak®, or with a pedestal mounted bearing unit

HTO 80 120 180 300HTO Pump – Design Features

Patented design utilizes:

Close coupled for a compact and light weight design

Hollow carbon graphite isolator bushings

Hollow sleeve design

Air cooled by integral fan/clamp

No need for water cooling jacket or seal flush

Process temperatures up to 650°F

Design which prevents the process heat from leaving the system to save energy, space, and cost without using cooling water

HTO 80 120 180 300HTO Pump – How It Works

HEATHEAT

COOL

Finned seal housing.

Integral fan clamp blows across finned seal housing.

Seal oil temp.< 350°F.

Carbon graphite isolator bushings

Insulating air pocket.

Thin section minimizes heat transfer.

Viton o-ring to seal air pocket.

Close clearance throttles down fluid flow to seal chamber.

Process oil temp. < 650°F

HTC carbon fiber gaskets.

(3) 5/16” cap screws to minimize heat transfer.

HTO 80 120 180 300HTO Series – Seal Cooling Performance

HTO 80 120 180 300HTO Series – Quick Reference Chart

PUMP SIZE MOTOR * CAPACITY HEAD

HTO801.5” x 1.25” x 5.9”

NPT or FLANGE

56C

145TC80 GPM 127 FT

HTO1202” x 1.5” x 6”

NPT or FLANGE

145TC

184C200 GPM 135 FT

HTO1803” x 1.5” x 6.45”

FLANGE184TC 215TC

320 GPM 162 FT

HTO3003” x 2.5” x 7”

FLANGE184TC 215TC

500 GPM 190 FT

* PEDESTAL MOUNT ALSO AVAILABLE

HTO 80 120 180 300HTO Pump – Sales vs. Competition

Cost leader vs. competition

Compact size requires less space than competition

No cooling water needed, reduces auxiliary equipment, and opportunity for oil/water mixing

Close coupled-no shaft alignments-less hassle

No sleeve bearings to wear out

Impeller is closer to supporting bearing

Less heat transferred out of the system; less energy required to be replaced

HTO 80 120 180 300HTO Pump – Reliability – Longer MTBF

Lower temperatures in the seal cavity greatly improves mechanical seal life

HTO pumps lower seal cavity oil temperatures (<350°F)

Coking between faces accelerates seal wear and shortens seal life

Lower temperatures, less coking, longer seal life, longer MTBF

Longer MTBF, less maintenance costs

HTO pumps provide several thousands of hours service life between rebuilds.

HTO 80 120 180 300HTO Pump – Markets Served

Asphalt Chemical Electronics Food Heat Transfer Metals Mining Paper

Pharmaceuticals Plastics Recycling Renewable energy Rubber Wood

DRYERS - used to evaporate liquids from solids (mining, food, printing, paper).

EXCHANGERS - transfer of energy between fluids of differing temperatures (chemical, pharmaceutical, plastics, metals, polymers, melting).

LINE TRACING - hollow tube or jacket on outside of pipe to keep material inside warm (plastics, asphalt, food).

MIXERS - outside of mixer is heated with hot fluid keeping material viscous (chemical, food, pharmaceuticals).

Picture courtesy of Liquid Process Systems, Inc.

HTO 80 120 180 300HTO Pump – System Applications

HTO 80 120 180 300HTO Pump – System Applications

MOLDS – keeps plastic molds hot allowing material to flow evenly through mold cavities.

OVENS – used on hot oil moving through cooking/baking coils.

PRESSES – platens are heated for bonding (plywood, rubber, circuit boards).

ROLLS – Hot oil circulates through rolls that press and bond laminates.

TANKS / VESSELS – Hot oil circulates through jackets around holding tanks.

Picture courtesy of SBS Corporation

HTO 80 120 180 300HTO Pump – Markets Served

HTO markets to expand:

Asphalt plants – there are approximately 3600 asphalt plants in the United States and over 90% of our countries 2 million miles of roads are asphalt

Laminating processes – laminated countertop, floor coverings, furniture, and wood door manufacturers

Recycling – recycling processes ranging from oil to tires

Solar energy – heat transfer fluid moving heat thru the system

HTO 80 120 180 300HTO Series – Frequently Asked Questions

Q: How can I pump hot oil above 400°F and have a Viton fitted seal survive?A: The seal in the HTO pump runs in a cooled environment where the temperature

will be less than 350 degrees.Q: When the pump is stopped at temperature will the seal temperature

spike?A: Even though the seal is cooled by a fan attached to the shaft when the pump is

stopped the seal temperature will not spike. The seal cavity temperature will fall due to the low thermal conductivity isolation system. Controlled temperature ramp down is not required.

Q: Can the pump be mounted vertically?A: Yes but the seal cavity may need to be vented on cold startup to remove the air

trapped inside so that the seal does not run dry.Q: Where should the pump be installed in the system?A: The HTO pump should be installed downstream of the heating load and at a

low elevation point in the system where the flow leaving the pump will be pumped into the heater. Isolation valves for the pump are recommended.

HTO 80 120 180 300HTO Series – Frequently Asked Questions (cont.)

Q: Will the motor bearings be affected by the heat from the pump?A: The ball bearing will have a higher temperature than when installed onto a

conventional pump. In most cases the bearing temperature will not exceed 180°F

Q: On initial start-up will the seal run dry?A: No, but there will be air inside the seal cavity that will move out into the normal

process flow path over time. The best system fill technique is to bottom fill the system to remove the most air during the fill.

Q: Can the pump be insulated?A: Yes, but only the pump housing as the rest of the pump needs to have air

circulate over it for cooling.Q: Can the pump be mounted inside a closed cabinet?A: Yes, but the temperature inside the cabinet must not exceed the operating

temperature of the electric motor. Good practice is to ventilate the cabinet at the fan cover of the motor for inlet air and locate exhaust vents near the pump housing. Higher ambient temps will increase the seal temperature.

HTO 80 120 180 300HTO Series – Frequently Asked Questions (cont.)

Q: Can the HTO pump be used in applications where the process temperature varies?

A: Yes, the seal temperature will not vary as greatly as the process because of the isolation design.

Q: Is MTBF predictable?A: Every application is different including the quality of the oil. MTBF can be

monitored initially and then it should be repeatable assuming that the oil and other system parameters are consistent.

Q: How important is oil quality to the life of the pump seal?A: The quality of the oil is as important to the seal as dirt and contamination is to

a ball bearing. If the process is made to conform to the oil manufacturers recommendations seal life may approach several years of continuous use.

Q: Can the HTO pump be operated at 1750 RPM’s?A: Yes, while the speed at which the integral fan clamp is turning is slower, it still

moves enough air across the seal housing to remove an acceptable amount of heat. It is important to remember that due to the design of the pump the isolator bushings are the major factor in protecting the mechanical seal against the high process temperature.

Webinar Series Continues

• Coming in January 2012 is our second webinar featuring our Petroleum pump line.

• Specifically designed for use in the Petroleum industry.• Three different models within the line for use with Bio-

diesel, Fuel Oil, Diesel, Gasoline, Avgas, Kerosene, Jet A/8, Ethanol, and E85.

• Available in standard end suction and self-priming.• Check out the Petrolmaxx line under the “Products” tab

on our website, www.mppumps.com.

HTO 80 120 180 300HTO Series 80 – Exploded View