• Centrifugal Pumps

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    • Abstract: increasing demands on our centrifugal pumps. The XL also offers dynamic exclusion seals for the drive end of the pump. The optional labyrinth seals offer. additional value in dusty environments where contaminants tend to get into ... The Magnum Multistage (MMS) pumps are designed to operate in series ...

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Centrifugal Pumps
• Magnum I
• Magnachrome
• Magnum XL
• Magnum SHEAR
• Vertical
• Sandmaster
• Vortex
• Magnum XP
• Multistage
Introduction to Mission
MAGNUM Line of pumps.
For more than 40 years, a wide variety
of industries have trusted Mission
products for their fluid handling systems.
The Mission Magnum line of centrifugal
pumps offers a broad selection of
innovative centrifugal pumps for a
variety of routine, demanding, abrasive
and corrosive applications. These
pumps are designed for a wide range
of flow rates, from a few gallons to
hundreds of gallons per minute.
This catalog has been divided into five major sections:
Each section has been color coded for convenience.
The Mission MAGNUM Pumps 2-10
Pump Sizing Information 11-13
Bill Of Materials 14-18
Pump Performance Curves 19-36
Engineering Data 37-49
The pictures, photographs, charts, diagrams, drawings, written comments, and specifications contained herein are
not to be construed as giving rise to any warranty on the part of Mission, a product of National-Oilwell. Mission makes
no warranty, either express or implied, beyond that stipulated in the Mission Standard Terms and Conditions of Sale.
The MAGNUM Pumps
Features of the Leader
Each Mission MAGNUM pump produced and shipped will contain the finest materials,
engineering and craftsmanship available in the industry. Some of the basic features
of the MAGNUM line have been listed in the call-outs 1-18. Unique features and
benefits of the MAGNUM line are described in greater detail on these pages.
The MAGNUM Casing The MAGNUM Shaft
All of the pumps in the MAGNUM Line feature a casing The MAGNUM line pump shafts
that is and average of 37% thicker than conventional are much larger in diameter
pump casings, and up to 50% thicker for the larger, mud than conventional pump shafts
pumping models. for heavy-duty performance,
minimum deflection and
The concentric casing eliminates vibration, turbulence increased operating life of the
and cavitation which is caused by cut water in packing or seals.
conventional volute pumps. It also reduces the high
bearing load and shaft deflection present in other The shaft area under the packing has a renewable,
designs at near shutoff flows. hook type sleeve with one end free to expand with
temperature variation. This sleeve is easily replaced in
MAGNUM casings are pressure rated at 1.5 times the the field without shaft removal.
flange rating and are designed with a 1/8” erosion
allowance. The MAGNUM Heavy-Duty Bearings
Advanced front and rear bearing design reduces both
The MAGNUM Impeller radial and thrust loads.
The MAGNUM pump impeller is a highly efficient, open
vane impeller. The metal between the vanes is removed, The outboard bearing is a duplex set of angular contact
and partial shrouds are provided for bearings with high thrust load capabilities and zero end
maximum vane support. The back play. The bearing has 24 large balls, which are preloaded
vanes are the same curvature as the so that each set carries an equal load. The front or
front vanes. The entrance shape of inboard bearing is a single row roller bearing with
the vanes is more tangential to the high radial load capabilities.
circumference of the suction, which
reduces turbulence. The MAGNUM Stuffing Box
MAGNUM pumps feature an easy-access stuffing box.
The open-vane design eliminates This feature allows access into the casing and stuffing
re-circulation, which occurs in box chamber with the removal of just one bolt.
closed impellers. The deep stuffing box accommodates five standard rings
of packing and a Lantern Ring. The stuffing box has a
The reduction of the area affected by unbalanced forces tapped opening to the Lantern Ring for internal flushing
results in a much lower axial thrust and improved bearing if desired. Easy removal also allows convenient
life. The back pump-out vanes reduce the concentration replacement of the shaft sleeve.
of solids at the stuffing box and lower the pressure on
the stuffing box. The stuffing box is completely machined for
mechanical seal installation.
The impeller has a wider design and greater distance
from the tip of the vanes to the casing. Fluid leaving the
impeller is allowed to blend with re-circulating fluid,
which reduces abrasive wear of the casing. The high
scrubbing action of conventional pumps is eliminated.
The impeller is screwed onto the shaft and the threads These are just a few of the unique features
are sealed by an O-ring. The Hard Iron Magnum is also of the MAGNUM line of pumps. Your MISSION
equipped with an impeller anti-loosening device, which sales representative can answer any specific
prevents the impeller from loosening if the pump is run questions you may have about a particular
backwards during startup and inspection of motor direction.
MAGNUM model or application.
1 Thick, strong concentric casing provides higher 14 “Frictionless” bearing isolators
efficiencies over a wider operating range than available to extend bearing life
conventional volute designs. The concentric and improve pump efficiency.
design minimizes turbulence and abrasive wear.
15 Optional flanged bearing
2 Wide open-vane impeller creates lower axial housing available for
thrust for improved bearing life. hydraulic drive.
3 Casing gasket receded for protection. 16 Large supreme-duty shaft
reduces deflection for longer life of packing
4 Replaceable stuffing-box cover. and mechanical seals.
5 Optional stuffing-boxes available for single and 17 Easy to get to front access drain, when requested.
double mechanical seal applications and
configured for flush liners. 18 External adjustment of impeller clearance
extends pump performance life.
6 Full pipe diameter entrance for minimum
turbulence and maximum efficiency. 19 Impeller anti-loosening device to eliminate pump
damage in case of improper motor hook-up.
7 Smooth impeller eye for minimum
turbulence and higher efficiency.
8 Back vanes reduce collection of solids at 17
stuffing box and reduce box pressure.
9 Long-life no-adjustment mechanical seal
available for near zero leakage.
10 Replaceable shaft sleeve prevents shaft wear.
11 Single row roller bearings for increased
bearing life. 8
11a Roller Bearings are used for all models.
12 Duplex angular contact bearings eliminate shaft 4 6
end play and increases bearing and seal life.
13 Oil lubrication for bearings for pump speeds
in excess of 2400 rpm, upon request.
The Supreme-Duty Centrifugal Pump
The Mission MAGNUM I has been engineered for the toughest jobs in drilling, production,
well-servicing, and industrial applications.
The revolutionary design of the MAGNUM I provides supreme-duty performance in all types of fluid
pumping operations. Although it offers greater capacity and higher heads, the MAGNUM I remains
the competitive pump of choice for aggressive applications.
The MAGNUM I is more powerful, more durable, and easier to maintain than any conventional
pump in use today.
• Up to 50% more capacity from the 8 x 6 pump
• Optimum pressure at low operating speeds Common applications include:
• Thicker casing to extend life from wear and corrosion Barite, ferric oxide and mineral oil
• New impeller design to reduce loads and extend bearing life base drilling muds
• Larger, stronger shaft to reduce deflection Glass fibers
• Replaceable shaft sleeve in packing wear area Sugar processing
• Larger, long-life bearings Ash or coal conveyors
• Replaceable stuffing box cover Cement
• Smoother, non-turbulent flow throughout casing Mine de-watering
Lime slurries
Kaolin clay
Crystalline forms
Typical configurations:
3x2x13 6x5x14
See pages 19-31 for pump performance curves
4x3x13 8x6x11
See page 37 for dimensional data
5x4x14 8x6x14
6x5x11 10x8x14
The MAGNACHROME centrifugal pump is built to deliver superior fluid handling
performance in a variety of applications. It’s performance incorporates the power,
durability and ease of maintenance of the field proven MAGNUM I with a new high
strength material in critical component areas.
A chromium alloyed iron provides greater wear resistance and higher strength in the
casing, stuffing box, and impeller. This new alloy gives the casing a hardness of 600 HB, and the
impeller and stuffing box a hardness of 450 HB.
This process gives the critical components in the MAGNACHROME a more uniform structure; and a
30% carbide content versus hard iron with its soft graphite flakes. The components of the
MAGNACHROME have a wear resistance of more than 9 times that of cast iron and more than
6 times that of hard iron.
• High grade, heavy-walled, solid construction offering superior performance over lined
pumps and those using inserts
• One power fame fits all sizes
• Double row angular contact bearings to minimize axial thrust
• Double row inboard bearings to minimize effects of radial load
• Greater capacity and higher heads for extremely abrasive fluids.
Common applications include:
Barite, ferric oxide and mineral oil base drilling muds
Glass fibers
Sugar processing
Ash or coal conveyors
Mine de-watering
Lime slurries
Kaolin clay
Crystalline forms
Typical configurations:
Miller Abrasion Test
See pages 19-31 for flow rate data .02
See page 37 for dimensional data 0
-01 -30 -AY/-AZ
Cast Iron Hard Iron Magna-
The MAGNUM XL offers the strength and integrity of the Magnum with added features for the
most demanding environments.
The XL fluid end offers a replaceable hardened wear pad, impeller and stuffing box cover to
extend the life of the pump. Also featured in the XL fluid end is the impeller with an anti-loosening
device. This device prevents the impeller from loosening if the pump is accidentally run backwards.
The Magnum XL offers an inboard roller bearing for even higher radial load capabilities for today’s ever
increasing demands on our centrifugal pumps.
The XL also offers dynamic exclusion seals for the drive end of the pump. The optional labyrinth seals offer
additional value in dusty environments where contaminants tend to get into the power end’s lubrication fluid.
The exclusion seals have proven to extend the power end life of pumps up to 50% in dirty environments.
Common applications include:
Barite, ferric oxide and mineral oil base drilling muds
Glass fibers
Sugar processing
Ash or coal conveyors Cement
Mine de-watering Lime slurries
Kaolin clay Crystalline forms
Typical configurations:
3x2x13 6x5x14
4x3x13 8x6x11
5x4x14 8x6x14
6x5x11 10x8x14
See pages 19-31 for pump performance curves
See page 37 for dimensional data
The Magnum Shear pump offers an economical and compact method of shearing polymers into the fluid
stream. When properly sheared, polymers can pass through the shaker screen without having to use larger
screen sizes that could cause the loss of excess drilling mud. Shearing is accomplished with the addition of our
proprietary stuffing box and shear impeller to the standard Magnum 1 pump. There are no modifications to
existing piping required and the Magnum Shear pump is constructed of the same materials as the original
Magnum 1 pump series. To improve the use of your solids control expenditures use the Magnum Shear pump
to add polymers to your solids system.
Common applications include:
Polymer Additives
Particle Degradation
Typical configurations:
Contact your MISSION Representative
for pump performance curves
See page 37 for dimensional data
When floor space is at a premium and performance is critical,
the VERTICAL MAGNUM provides the solution. The VERTICAL
includes virtually all of the features of the MAGNUM I.
In addition, the versatile and unique design of the VERTICAL
can be utilized in diverse applications.
In a wet pit environment, the VERTICAL requires no
bearings or sealing device below the waterline. Use of a
vortex impeller allows the passage of any solid that can
enter the suction inlet and minimizes particle degradation.
Concentric casing design minimizes shaft cyclical
deflection and allows excellent slurry handling.
Common applications include:
Mud pumping - offshore/onshore
Solids Control
Leveling of rig platform (ballast)
Typical configurations:
See pages 19-31 for pump performance curves
See page 38 for dimensional data
The compact and adaptable SANDMASTER centrifugal pump includes virtually all of the
features of the MAGNUM I. In addition, the SANDMASTER is more compact in design and
can be adapted for hydraulic motor drive. This added feature makes the SANDMASTER ideal
for use in applications such as oilfield frac trucks as well as blending and pump charging
service. The SANDMASTER’s variable speed hydraulic drive make this an excellent pump
for water well drilling applications.
When space is at a premium and prime mover options are limited, the SANDMASTER is the pump of choice.
Common applications include:
Cement Charge Pump
Blender Other Mobile uses
Waterwell Drilling
Typical configurations:
3x2x13 6x5x14
4x3x13 8x6x11
5x4x14 8x6x14
6x5x11 10x8x14
See pages 19-31 for pump performance curves
See page 39 for dimensional data
The VORTEX centrifugal pump offers users the proven performance of the MAGNUM I adapted with
a concentric vortex casing. The VORTEX also features identically sized suction and discharge flanges,
and a high performance vortex designed impeller.
The vortex impeller produces a smooth hydraulic whirlpool
of fluid around the impeller creating a vacuum which allows
fluid to circulate without passing through the impeller. This
smooth action increases fluid velocity and produces pressure
without turbulence, greatly reducing particle degradation.
Solids smaller than the discharge flow easily, without clogging.
The VORTEX eliminates the eye of the impeller reducing the
possibility of vapor lock; making it an excellent selection for
high suction lift applications where net positive suction
head is low.
The unique design of the VORTEX lowers radial loads,
decreases shaft deflection and increases bearing life.
The VORTEX is designed to pump continuously, even without fluid
in its case, and can reprime, under positive suction feed, without vapor locking.
Common applications include:
See pages 32-34 for pump performance curves
Pulp and paper
See page 40 for dimensional data
Primary metals
Municipal sewage treatment
Chemical process industry
The MAGNUM XP is ideally suited for pumping high volumes of heavy slurries that
are abrasive, corrosive, or just plain tough to pump. The MAGNUM XP 14x12x22
and 12x10x23 can deliver flow rates from 3000 - 7500 gpm at 75 - 410 feet
of head at low speeds.
The compact overall dimensions of the MAGNUM XP make it an excellent choice for
high volume mobile and stationary applications where a small footprint is critical.
The MAGNUM XP is designed for continuous operation with minimal maintenance. The low stuffing
box pressure can increase seal life approximately 50%. The extra-heavy shaft is designed for minimum
deflection. This feature also extends seal life. A unique casing flow divider cuts the radial load in half,
doubling bearing life. The heavy duty bearings are permanently lubricated to minimize maintenance.
Common applications include:
Sand slurry
Fly ash
Bottom ash
Dredge tailings
Food processing
Paper pulp processing
Waste slurries
Fluid supercharging
Spent liquor
Nickel shot
Copper, bauxite, and quarry slurries
Lead and zinc ore and tailings
Typical configurations:
See page 35 for pump performance curves
See page 41 for dimensional data
The Magnum Multistage, the newest member of the Magnum family, was developed to
handle aggressive slurries containing up to 1/2˝ particle sizes in higher pressure applications.
These pumps may be installed either horizontally or vertically to allow for maximum
piping options. The Magnum Multistage (MMS) pumps are designed to operate in series
to deliver pressures up to 7,500 psi. This makes this pump a viable option as a riser boost
pump, mud prime mover, pipeline mining and saltwater injection.
The Magnum Multistage can be constructed from a wide range of materials to offer superior abrasion
and corrosion resistance. API D-1 and S-6 traceability can be offered for critical locations.
The Magnum Multistage is offered with a variety of sealing options. The seal requirement will depend
upon pumping suction and discharge pressures, ambient environment and corrosive/abrasive nature of
fluid pumped. Single, double and balanced seals are readily available to meet your demanding operating
conditions. Typical API flush plans may be used with all of these seal options.
The Magnum Multistage is designed to minimize and in some applications completely eliminate thrust
to the motor which greatly reduces motor expenditures. This feature also helps to extend shaft, shaft
bushing and mechanical seal life.
Common applications include:
Well Injection
Salt Water Disposal
Mud Booster Pump
Water Purification
Fly Ash
Typical configurations:
See page 36 for pump performance curves
See page 18 for dimensional data
Pump Sizing Information
Conversion Tables
GPM = .03 x Barrels per day Flow
Specific gravity = weight fluid in pounds/gal. Barrels/Hour Barrels/Day. GPM
8.34 4.2 100 3
S.GR. = Pounds/cu.ft. 10.5 250 7.5
32.4 21 500 15
31.5 750 22.5
PSI x 2.31 42 1000 30
Feet Head =
SP .GR. 63 1500 45
83 2000 60
Feet Head x SP GR.
. 125 3000 90
PSI = 208 5000 150
312 7500 225
420 10,000 300
Brake Horsepower Required=
Curved Horsepower x SP GR.
Head - for water, Sp. Gr. = 1.0
Pounds per Gallon =
.133 x pounds/cu.ft. Feet Psi Psi Feet
10 4.33 10 23.1
Metric Conversions: 20 8.66 20 46.2
25 10.8 25 57.8
GPM = .264 x liters/min.
30 13 30 69.3
GPM = 15.9 x liters/sec. 40 17.3 35 80.9
GPM = 4.4 x meters3/hr. 50 21.6 40 92.4
GPM = 264 x meters3/min. 75 32.48 45 104
Feet = 3.28 x meters 100 43.2 50 115.5
PSI = 14.2 x Kg/cm2 150 64.8 60 138.6
SP GR. = 1 x grams/cu. cm.
. 200 86.4 75 173.2
250 108 100 231
Determining horsepower for 300 130 125 288.7
350 151.6 150 346.5
pumping weighted fluids 400 172.8 175 404.2
450 195 200 462
The pump performance curves show horsepower for pumping
clear water with a specific gravity of 1 and a weight of 8.34
lb/gal. For fluids with a higher specific gravity than plain water,
correct the pump performance curves in the following manner:
1. Find the fluid weight in lb/gal.
2. Multiply horsepower shown on the curve
by fluid wight in lb/gal., then divide by 8.34.
Corrected HP = Curve Brake HP x Fluid Wt./Gallon
Selecting A Pump Size
Determining Horsepower Requirements
The proper pump size and horsepower for a pumping condition of the liquid being pumped, the process,
application can be determined by referring to performance and the location. The other is NPSH required
curves. Performance curves of some of the most popular (NPSHr), depends upon the pump design that
MAGNUM pump configurations can be found on pages is determined by the pump manufacturer and
19 - 31 of this catalog. A more complete publication of is reflected on the performance curves.
pump performance curves is available from your NOI
Mission representative. Locate the individual pump curves NPSH is the total suction head in feet of liquid
meeting the required GPM and head feet for each acting at the pump suction flange less the
application. More than one curve may be applicable. absolute vapor pressure (in feet) of the liquid
being pumped.
1. Select the impeller size.
Speeds of 1750 RPM and below. Read to the NPSH Available (NPSHa)
nearest 1/4 inch.
NPSHa is determined by four factors.
2. Select bearing frame.
Grease lubricated for pump speeds to 2400 1. Absolute pressure (in feet) on the
RPM or oil lubricated for pump speeds 2600 surface of the liquid being pumped.
to 3600 RPM. In most cases for our pumps, this is
the atmospheric pressure in an open
3. Calculate the required horsepower. mud tank. (see below)
A. Read horsepower from curve based on 2. Head in feet corresponding to the
water at operating point on impeller vapor pressure of the liquid at the
(selected as accurately as possible) then: temperature being pumped.
3. The difference in elevation between
Brake Horsepower Required = Hp curve X SP. the surface of the pumped liquid
GR. Fluid and the centerline of the pump.
4. Friction head lost as the liquid flow
B. Alternate method - Read efficiency at the from the tank to the pump.
operating point.
Atmospheric pressure - 68˚F @ sea level is
Brake Horsepower = (GPM) (Feet Head) (SP GR.)
. 14.696 psia = 33.96 feet absolute
(3960) (Efficiency)
4. Calculate your system NPSH available in feet.
The use of a centrifugal pump requires that ITEM #2 IS ALWAYS A NEGATIVE
consideration be given to the suction conditions ITEM #3 CAN BE EITHER POSITIVE
for all applications. One of these, NPSH OR NEGATIVE
Available (NPSHa) is dependent upon the ITEM #4 IS ALWAYS A NEGATIVE
Selecting A Pump Size
Determining Horsepower Requirements (cont’d)
NPSHa must always be a positive and can be Vapor pressure = vapor pressure fluid at
calculated by the following two equations. pumping temperature in feet of fluid.
SUCTION LIFT - liquid supply level is Vapor pressure of water for estimating:
below the centerline of the pump suction.
Temperature Vapor pressure feet of fluid
NPSHa = Ha - Hvpa - Hst- Hfs 80o F 1.2
120o F 3.9
FLOODED SUCTION - liquid supply is 140o F 6.8
above the centerline of the pump suction. 160o F 11.2
180o F 17.8
NPSHa = Ha - Hvpa + Hst - Hfs
5. Read NPSH required from curve.
• Ha = Absolute pressure (in feet of NPSHr requires no calculation since it is
liquid) on the surface of the determined by the pump manufacturer by an
liquid supply. (Barometric actual test of the pump. It is usually given in
Pressure from an open tank feet of water since most performance tests are
or pit; Absolute pressure conducted with water.
from a closed tank).
• Hvpa = Head in feet corresponding REMEMBER THAT NPSHa MUST ALWAYS
to the vapor pressure of the BE GREATER THAN NPSHr OR THE PUMP
liquid at the temperature MAY CAVITATE OR NOT PUMP AT ALL.
being pumped.
• Hst = Static height in feet that the If the NPSHa is less than NPSHr some of the
liquid supply level is above following can help solve this problem.
or below the pump centerline.
• Hfs = All suction line losses (in feet) 1. Raise the fluid level
including entrances losses and 2. Oversize the pump
friction losses through the 3. Use larger suction pipe to reduce velocity
piping, valves, fitting and etc. 4. Reduce pump speed and increase impeller
diameter to achieve same discharge head.
Elevation = distance from surface of liquid on
suction side to center line of pump in feet
(above+; below -)
Bill of Materials
See Publication CP001 for Part Numbers and Pricing
12B 6A 6 1 1B 1C 1A
13D 13E 12C 7 10C 10B 10F 10G 3A
7B 13C 13A 13 13B 12A 12 10A
7C 7A
14A 16C 16A
14 16 9 11 10E 10D 10 8 4

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