MTH Pumps - Find Your Application
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Application
|
Typical Pump Type |
Description |
Boiler
Feed Service
|
Small Boiler Feed Systems: T31 • T41 • T51 Series
Large Boiler Feed Systems: 100
• 200 Series
|
One of the traditional applications for regenerative
turbine pumps, boiler feed systems, remains one of our largest markets.
In a boiler feed system, the pump supplies water to the boiler as
the steam is used up in the process. Steam boilers operate under
pressure, so the pump must develop enough pressure to overcome the
boiler pressure as well as losses due to friction from piping and
check valves. Boilers come in all sizes; from small units supplying
steam for local drycleaners, to large systems making steam for processing
and building heating. MTH can provide feedwater pumps for boilers
ranging in size from 10KW to 800HP, and operating pressures up to
1000 psi.
Regenerative turbine pumps are desirable for on/off water supply,
as opposed to continuous feed make-up. A centrifugal pump used
in conjunction with a regulating valve is the typical arrangement
utilized when continuous operation is required.
|
Booster Service
|
|
Another early use for regenerative turbine pumps is
to boost the pressure of water. It may be used to lift or boost from
one elevation to a higher one, or to increase the normal system pressure
to higher pressure. Some common applications include water pressure
boosting for high rise buildings, wash down, and pressure cleaning
applications including commercial dish washers, parts washers, and
car washes.
Also Note: the stainless steel C Series centrifugals have also
been used as low pressure water boosters for small low-rise condominium
complexes where the high pressure of a turbine was not necessary.
|
car & truck washes
|
|
|
chemical processing
|
|
|
chillers
|
|
Another very popular application for regenerative turbines
is in what is commonly called the “Temperature Control Equipment” market.
This equipment is used to control the temperature of another primary
process or chamber depending on the end application. Generally, the
temperature controllers that are used to heat above ambient, are
called “heat exchangers”, while those that are used to
cool are called “chillers”. In many end applications,
controlling temperature within a degree or less is critical. One
of the primary methods for temperature control is to heat or cool
a fluid like water, DI water, glycol, or synthetic heat transfer
fluids like Galden or Flourinert, and then circulate them through
coils of tubing wrapped around the product or process chamber. This
is normally done with long lengths of tubing that (due to its small
diameter) has a high fluid friction resistance, and hence, requires
a relatively high head pump. MTH regenerative turbines are ideally
suited for these applications not only because of their high head,
low flow characteristics, but also because most of the manufacturers
of these pieces of equipment pack their enclosures VERY tightly,
and the compact single stage design of most of our products are advantageous
over much larger multistage centrifugal designs.
In fact, one of the most critical processes in the production
of computer integrated circuit chips is the deposition of various
conductive materials onto silicon wafers. This process is applied
in a sterile, vacuum environment that must be temperature controlled
to less than 1 degree variation. MTH T Series and X Series sealless
canned pumps are used by several major temperature controller manufacturers
to recirculate the temperature controlled fluid to those critical
process chambers. |
circulating
|
|
|
Condensate
Return
|
C41 • C51 • C61
Series |
Another related application for MTH regen’s,
is condensate return systems. At the end of a steam boiler loop,
as the steam gives off its heat, it condenses back to the liquid
state. The “condensate” is collected in a receiver
tank which contains either a float switch or level control, which
starts the pump at a high level and stops it at low level. The
condensate is normally pumped to either a de-aerator or a surge
tank. Recovery of condensate has value, because it is still hot,
and so it requires less energy for the boiler to return it to steam.
This provides energy savings. The picture here shows an MTH T41
Series pump on a custom produced stainless steel condensate return
tank.
MTH has partnered with a fabrication shop, and can now offer
custom made industrial condensate return packages to a customer’s
drawing. It should be noted that MTH also produces the suction
strainer shown here. It is available in either a standard or
offset style. The offset suction strainer is designed specifically
to make a T41 or T51 match the suction position of the equivalent
Burks pump. Replacement of existing Burks pumps in these applications
then becomes a simple matter for the end user. Please contact
the factory for more information and pricing on any of these
items.
|
Coolant Systems
|
|
Many coolant systems are designed
to pump cooling fluid through long runs of relatively narrow
tubing wrapped around a process chamber or a small tool tip.
This situation requires a pump with good high pressure characteristics
like the MTH regenerative turbines. |
cooling
|
|
|
DC (Direct
Current) 12Volt Washdown Pumps |
DC10 Series |
Our DC10 pump
which is specifically designed for truck mounted portable toilet
washdown duty. Other
voltages and HP can be made available on request. |
De-icing
Service
|
|
In another direct injection application, an MTH turbine
injects a deicing agent into a high volume, high pressure water line
for the deicing of aircraft. The turbine’s high head is necessary
to overcome the primary water line pressure, and the steep head-capacity
curve means that variations in the primary line’s pressure,
have relatively little effect on the volume of deicing agent injected,
and therefore provides a very consistent deicing mixture in this
critical application. |
DI
Water Handling
|
|
Another electronics industry related application is
in circuit board assembly wash down. After electronic components,
hard disks, or circuit boards are manufactured, they are washed down
with highly purified de-ionized water that has almost zero conductivity.
After the wash down, the fluid, which is now contaminated, is collected
and transferred to a storage tank. From here it is transferred by
another MTH pump at high pressure (150-250 PSI) through a reverse
osmosis membrane that removes the contaminated particles, and allows
clean fluid to pass through and be reused. Stainless steel construction
is required. Other RO (reverse osmosis) applications are also served
by MTH X41 Series sealless pumps for shipboard drinking water supplies.
An up and coming alternative to DI water wash down of circuitry
and other contamination sensitive computer components, is supercritical
carbon dioxide scrubbing. The carbon dioxide is pumped in a very
high pressure supercritical gaseous-fluidic state around 1500
PSI or greater system pressure. In this state, the CO2 is an
extremely effective and environmentally friendly cleaning solvent
that does not harm components. MTH is currently pioneering the
research to develop a pump to handle this high technology application.
|
EDM Machines
|
|
Another chiller application is for EDM or Electron
Discharge Machining. These machines remove material from a work piece
in a controlled manner by discharging thousands of electrical pulses
(like very small lightning strikes). The negatively charged work
piece is bombarded by the pulses and unwanted material is vaporized.
The continuous discharging “gun” or tool must be cooled
at the tip to prevent premature failure. To do this, a narrow water
passage is provided around the tip. This cooling application requires
low flow, normally 3 - 10 GPM depending upon the machine, and high
heads from 125 - 150 psi. The MTH T Series pumps fit this application
ideally. Similar cooling systems are also used to cool the tips of
plasma arc welders.
As mentioned previously, some manufacturers will buy their “Chillers” prepackaged
from any one of a number of companies, but in many cases they may build
their own cooling systems and should be approached as potential customers. |
Extractors
|
|
|
Filter
Back Flush
|
|
There are many different types of processes that use
filter material to maintain fluid cleanliness. To extend the life
of the more expensive filters, a back flushing system is sometimes
utilized to force the contaminates out of the filter material long
enough for it to be flushed away. One type of system used in the
remediation of certain types of groundwater contamination utilizes
a chamber that has a number of layers of stacked trays with small
holes in the bottom. The water cascades through the trays via the
small holes, leaving the contaminants behind. Heavy buildup of contaminants
eventually would clog the holes and shut the system down, so an automatic
back flush was developed using high pressure MTH regenerative turbine
pumps to force the contamination buildup out of the holes at 300
psi, thus cleaning the trays and keeping the system on line. Please
go to our standard products page to
begin sizing a pump to your particular application. |
Fire Suppression
|
|
Automatic fire suppression systems normally
utilize two pumps. One unit is the main fire pump which delivers
large volumes of water to the fire suppression system (sprinklers)
in case of fire. When there is no fire, a low flow, high head “Jockey
Pump” is used to overcome the normal system plumbing leakage
that bleeds down system pressure over time, and maintains a consistent
system pressure. When the system bleeds enough pressure to trigger
the jockey pump, it cycles on and re-pressurizes the system back
to its normal level. When a large enough pressure drop occurs that
the jockey pump cannot overcome it (such as a fire opening a sprinkler
head or a fire hose being turned on), the main high volume fire pump
starts and takes over the water supply duties. Utilizing the main
fire pump for the re-pressurizing function would be very expensive
and limit the life of the pump and motor due to the numerous starts & stops.
A variety of different MTH turbines are used as fire system jockey
pumps depending upon system size. |
Fire Systems
|
Fluid Handling
|
|
|
Fluid Transfer
|
|
|
Fuel Cells
|
T31 • T41 • T51 Series |
Fuel cells utilize an electrochemical process to convert
the chemical energy in natural gas or pure hydrogen to electricity
and heat. The process is non-polluting, low maintenance, and very
quiet in operation. Large capacity fuel cells are now available to
provide “clean” uninterrupted AC power for such critical
installations as hospitals, computers, or for areas subject to frequent
power grid fluctuations. These cells can operate in conjunction with,
or independent of a commercial power grid, and are mostly used in
place of fossil fuel powered generators. In one system, a fuel cell
manufacturer uses two MTH T Series pumps.
One is a circulation pump which continuously filters the water supply
and supplies the feed pump. The feed pump operates at 120 psi and
injects de-ionized water into the process to produce the hydrogen
necessary for the chemical to electrical energy conversion. The DI
water usually requires pumps of all stainless steel construction.
As fuel cell technology advances, and becomes viable for automotive
applications, a very large new market is evolving and MTH currently
provides pumps for a number of prototype fuel cell technologies.
Two of our new Engineered Products are poised for this market. The
ST21 is a 2,000 ~ 10,000 RPM DC brushless, variable speed sealless
canned turbine pump with a flow range up to 2GPM and heads up to
500 feet. This unit is designed specifically for DI water injection
for fuel cells, and features a closed-loop pressure transducer feedback
system to maintain tight control of system pressure. The sister product
is the SC31 which is based on the same motor and controller, but
features a centrifugal wet end and capacities up to 6GPM. |
Groundwater Remediation
|
|
Another lesser known application is in Groundwater
Remediation. One of the many processes in the remediation of certain
types of groundwater contamination utilizes a chamber that has a
number of layers of stacked trays with grids of small 3/32” holes.
The water permeates the small holes in the trays and leaves successively
more and more contaminates behind as it cascades down through the
remaining trays. The buildup of contaminants would eventually clog
the holes completely and shut the system down. To prevent this, a
regularly scheduled automatic back flush was developed using MTH
pumps to develop the high pressure (300psi) necessary to clean the
holes and trays periodically, and keep system efficiency up. |
Heat Exchangers
|
|
Another very popular application for regenerative turbines
is in what is commonly called the “Temperature Control Equipment” market.
This equipment is used to control the temperature of another primary
process or chamber depending on the end application. Generally, the
temperature controllers that are used to heat above ambient, are
called “heat exchangers”, while those that are used to
cool are called “chillers”. In many end applications,
controlling temperature within a degree or less is critical. One
of the primary methods for temperature control is to heat or cool
a fluid like water, DI water, glycol, or synthetic heat transfer
fluids like Galden or Flourinert, and then circulate them through
coils of tubing wrapped around the product or process chamber. This
is normally done with long lengths of tubing that (due to its small
diameter) has a high fluid friction resistance, and hence, requires
a relatively high head pump. MTH regenerative turbines are ideally
suited for these applications not only because of their high head,
low flow characteristics, but also because most of the manufacturers
of these pieces of equipment pack their enclosures VERY tightly,
and the compact single stage design of most of our products are advantageous
over much larger multistage centrifugal designs.
In fact, one of the most critical processes in the production
of computer integrated circuit chips is the deposition of various
conductive materials onto silicon wafers. This process is applied
in a sterile, vacuum environment that must be temperature controlled
to less than 1 degree variation. MTH T Series and X Series sealless
canned pumps are used by several major temperature controller manufacturers
to recirculate the temperature controlled fluid to those critical
process chambers. |
Hot Water Pumping
|
|
|
Hydrostatic Testing
|
|
MTH Pumps are often used for Hydrostatic Testing. They
will build and hold pressure at a specified test point for a certain
time period while the subject equipment is checked for leakage. Examples
include hydrostatic pressure testing of tanks, pumps, and various
high pressure system components and piping. |
Jockey
Service
|
|
Automatic fire pump systems normally
utilize two pumps. One is the main fire pump which delivers large
volumes of water to the fire standpipe system in case of fire.
The other is a low flow, high head jockey pump which keeps the
system pressurized during normal non-fire conditions. |
Laboratory Equipment
|
|
|
Laser Cooling
|
|
Many coolant systems are designed
to pump cooling fluid through long runs of relatively narrow tubing
wrapped around a process chamber or a small tool tip. This situation
requires a pump with good high pressure characteristics like the
MTH regenerative turbines. |
Low NPSH
|
|
|
Machine tool high pressure coolant |
T51 or M Series |
MTH pumps can be used to boost the standard cutting
fluid pressure of a machine tool to significantly higher ones (up
to 1,000 psi). By removing heat from the cutting tip and clearing
chips, high pressure coolant allows a much higher cutting rate (sfm),
increasing productivity and reducing costs. Examples include gun
drilling, boring, core drilling, high speed drilling, and the like |
Magnetic Drive
|
|
|
Medical Imaging
|
|
Another very popular application for regenerative turbines
is in what is commonly called the “Temperature Control Equipment” market.
This equipment is used to control the temperature of another primary
process or chamber depending on the end application. Generally, the
temperature controllers that are used to heat above ambient, are
called “heat exchangers”, while those that are used to
cool are called “chillers”. In many end applications,
controlling temperature within a degree or less is critical. One
of the primary methods for temperature control is to heat or cool
a fluid like water, DI water, glycol, or synthetic heat transfer
fluids like Galden or Flourinert, and then circulate them through
coils of tubing wrapped around the product or process chamber. This
is normally done with long lengths of tubing that (due to its small
diameter) has a high fluid friction resistance, and hence, requires
a relatively high head pump. MTH regenerative turbines are ideally
suited for these applications not only because of their high head,
low flow characteristics, but also because most of the manufacturers
of these pieces of equipment pack their enclosures VERY tightly,
and the compact single stage design of most of our products are advantageous
over much larger multistage centrifugal designs.
In fact, one of the most critical processes in the production
of computer integrated circuit chips is the deposition of various
conductive materials onto silicon wafers. This process is applied
in a sterile, vacuum environment that must be temperature controlled
to less than 1 degree variation. MTH T Series and X Series sealless
canned pumps are used by several major temperature controller manufacturers
to recirculate the temperature controlled fluid to those critical
process chambers. |
Metering
|
|
|
Misting
|
|
|
Mixing
|
|
|
Pressure
Injection
|
|
Pressure Injection is another general application where
the high pressure characteristic of the regenerative turbine pump
is ideal. One application uses a turbine to directly inject creosote
at 150 psi into wood poles and bridge planks to preserve the wood
and prevent insects from eating the wood. Another direct injection
application is the infusion of curing agents into concrete. High
pressure is necessary to drive the chemicals through spray nozzles
and into the concrete mixing chamber, while the low flow characteristic
of the regen’ turbine provides the necessary metering control.
These agents control the curing time of the concrete and must be
varied depending upon the travel time to the job, as well as environmental
conditions.
In a different type of pressure injection, chlorine is added
to a water treatment system by use of an ejector. In this
application, a relatively small amount of water (generally,
less than 30 GPM) is diverted from the main stream to our
pump, which boosts the pressure and drives the water through
an orifice. The high velocity at the ejector orifice creates
a vacuum, which then pulls chlorine into the system from
a reservoir, and mixes it into the main flow line. This method
of ejector chlorination is required because chlorine is too
aggressive to pump directly. There are many other chemicals
that require this method of injection, and regenerative turbines
are well suited to this where the primary ejector capacity
requirement is less than 150GPM. In another wastewater treatment
application, turbines are remotely activated to pump low
volume water samples from the process line or tank, through
a long length of tubing, and back to a laboratory environment
for analysis of system performance. The high tubing friction
resistance and low volume requirement makes a small regenerative
turbine perfect for the job.
|
Process
|
|
|
Refrigeration
|
HRC Series |
Refrigeration is a growing application for several
MTH products. MTH’s ability to handle low vapor pressure refrigerants
is a derivation of our extensive experience in the boiler feed and
condensate return market. High temperature water near its boiling
point can have a vapor pressure equal or less than that of an ammonia
refrigeration system. The sealless canned HRC Series centrifugal
units are commonly used for low differential pressure refrigerant
recirculation. Sealless canned multistage turbine SL52
turbine pumps are used in ammonia refrigeration systems as an “ammonia
transfer pump”. This eliminates the need for expensive tanks,
piping, compressors, and valving commonly used to increase the pressure
of ammonia in an “equalized pressure system”. The important
feature of our turbines in this application is that ammonia has very
poor lubricating properties and the York IT and the Viking positive
displacement pumps that have been used in the past for this application
have metal to metal contact that translates into very high wear rates.
MTH turbines have little to no metal to metal contact due to their
floating impeller design, and therefore have much superior service
life in an environmentally friendly, sealless design, suitable for
meeting EPA and OSHA requirements. Our sealless turbines as well
as our HRC Series sealless canned centrifugal
pumps feature a reverse circulation line which constantly vents
ammonia vapor buildup from the pump and motor during, and in between
operating cycles. The low NPSH requirement of both the HRC Series
and the SL50 Series make both of these units ideal for pumping low
vapor pressure fluids like ammonia, where low NPSH margin can cause
destructive cavitation. Both of these units offer totally leak free
operation necessary for governmental safety and environmental requirements.
The sealless canned ST31’s, ST41’s,
ST51’s, and X Series turbines
are also capable of safely handling ammonia and other toxic refrigerants
in smaller point of service refrigeration systems. Even for simple
water/glycol systems for refrigerated cases, MTH high pressure regenerative
turbines in either mechanical seal or sealless versions are perfect
for overcoming the friction resistance of long heat exchanger piping
runs. |
Reverse Osmosis
|
|
|
Seal
Flushing
|
|
MTH Pumps are used as Seal Water Pumps on larger pumping
units. Clean, cool water is pumped into the seal chambers of larger
process pumps at pressures exceeding that of the process. This keeps
their seals cool and free of contamination from the process fluid.
The flushing extends the life of large process pumps and their expensive
large diameter seals. This system also helps prevent contaminated
process fluid from escaping the seal chamber in the event of a minor
seal leak by providing a clean fluid barrier. |
Spraying
|
|
|
Temperature
Control
|
|
Another very popular application for regenerative turbines
is in what is commonly called the “Temperature Control Equipment” market.
This equipment is used to control the temperature of another primary
process or chamber depending on the end application. Generally, the
temperature controllers that are used to heat above ambient, are
called “heat exchangers”, while those that are used to
cool are called “chillers”. In many end applications,
controlling temperature within a degree or less is critical. One
of the primary methods for temperature control is to heat or cool
a fluid like water, DI water, glycol, or synthetic heat transfer
fluids like Galden or Flourinert, and then circulate them through
coils of tubing wrapped around the product or process chamber. This
is normally done with long lengths of tubing that (due to its small
diameter) has a high fluid friction resistance, and hence, requires
a relatively high head pump. MTH regenerative turbines are ideally
suited for these applications not only because of their high head,
low flow characteristics, but also because most of the manufacturers
of these pieces of equipment pack their enclosures VERY tightly,
and the compact single stage design of most of our products are advantageous
over much larger multistage centrifugal designs.
In fact, one of the most critical processes in the production
of computer integrated circuit chips is the deposition of
various conductive materials onto silicon wafers. This process
is applied in a sterile, vacuum environment that must be
temperature controlled to less than 1 degree variation. MTH
T Series and X Series sealless
canned pumps are used by several
major temperature controller manufacturers to recirculate
the temperature controlled fluid to those critical process
chambers.
|
Variable Frequency
|
X Series
ST21
SC31
|
Most MTH pump products are available with an optional
variable frequency controller and a pressure transducer in a completely
assembled and tested unit. A closed loop pressure transducer /
variable frequency drive combination can eliminate the need for
costly pressure relief valves and their associated plumbing problems,
while gaining the ability to maintain constant discharge pressure
by automatically varying pump motor speed. Signal inputs and outputs
are available on the drive for accommodating a variety of external
controls, alarm set point signals, and other programmed outputs. |
Wash
Down Service
|
|
There are many types of wash down applications. Generally,
most wash down services utilize high pressure sprays to clean parts
and work surfaces. Because of their pumping characteristics, regenerative
turbines are especially suited to those applications where these
high pressure, low flow sprays are used. |
Wastewater Service
|
|
Due to our capability to handle 20%+ entrained vapor,
the regenerative turbines can be used in Dissolved Air Floatation
or “DAF” applications. Air is injected or drawn into
the pump inlet along with the process fluid (usually water). The
turbine impeller is extremely adept at breaking the air up into very
small bubbles that when viewed in a tank, appear like “smoke” in
the water. This air/water mixture is pumped into the bottom of a
wastewater tank. The bubbles have a natural affinity for recombining
into larger bubbles and any solid materials in proximity will act
as a catalyst for this to occur. As a result, all of the solid waste
materials in proximity to the bubble mixture will attract the air
bubbles and naturally float to the surface where they can be skimmed
off and disposed of. DAF is used in a number of applications including
poultry, fish, and other food processing, as well as municipal wastewater
treatment systems. |
Water Pumping
|
|
|
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