Goulds Pumps 3410 User manual

Installation, Operation,
and Maintenance Manual
Model 3410

Table of Contents
Model 3410 Installation, Operation, and Maintenance Manual 1
Table of Contents
Introduction and Safety .......................................................................................................... 4
Introduction ............................................................................................................................. 4
Safety ...................................................................................................................................... 5
Safety terminology and symbols ............................................................................................. 5
Environmental safety .............................................................................................................. 6
User safety .............................................................................................................................. 6
Precautions before work ....................................................................................................... 7
Precautions during work ....................................................................................................... 7
Safety regulations for Ex-approved products in potentially explosive atmospheres ................ 8
Product approval standards .................................................................................................. 10
Product warranty ................................................................................................................... 11
Transportation and Storage ................................................................................................. 12
Inspect the delivery ............................................................................................................... 12
Inspect the package ........................................................................................................... 12
Inspect the unit ................................................................................................................... 12
Transportation guidelines ...................................................................................................... 12
Pump handling ................................................................................................................... 12
Lifting methods ................................................................................................................... 12
Storage guidelines ................................................................................................................ 15
Pump storage requirements ............................................................................................... 15
Product Description .............................................................................................................. 16
General description ............................................................................................................... 16
Nameplate information .......................................................................................................... 20
Installation ............................................................................................................................. 22
Preinstallation ....................................................................................................................... 22
Pump location guidelines .................................................................................................... 22
Foundation requirements ................................................................................................... 23
Set the baseplate .................................................................................................................. 23
Pump-to-driver alignment ...................................................................................................... 24
Alignment checks ............................................................................................................... 24
Align the pump using a straight edge .................................................................................. 25
Align the pump using a dial indicator .................................................................................. 26
Grout the baseplate .............................................................................................................. 27
Piping checklists ................................................................................................................... 28
General piping checklist ..................................................................................................... 28
Suction piping checklist ...................................................................................................... 29
Suction-piping valve considerations ................................................................................... 32
Discharge piping considerations ......................................................................................... 33
Pressure gauges ................................................................................................................ 33
Pump doweling ..................................................................................................................... 33
Commissioning, Startup, Operation, and Shutdown ......................................................... 34
Preparation for startup .......................................................................................................... 34
Pump priming ........................................................................................................................ 35
Fill the system ....................................................................................................................... 35
Start the pump ...................................................................................................................... 36
Operational checklist ............................................................................................................. 36
Check the rotation - Frame Mounted ..................................................................................... 37
Couple the pump and driver .................................................................................................. 38
Bearing lubrication ................................................................................................................ 38

Table of Contents
Model 3410 Installation, Operation, and Maintenance Manual2
Lubricate the bearings with grease ..................................................................................... 38
Lubricate the bearings with oil (optional) ............................................................................ 38
Bar adjustment ................................................................................................................... 39
Seal the shaft with a packed stuffing box .............................................................................. 39
Mechanical seal options ........................................................................................................ 41
Connection of sealing liquid for a packed stuffing box .......................................................... 45
Connection of cooling water piping ....................................................................................... 45
Mechanical seal flushing and cooling .................................................................................... 46
Connection of drain piping .................................................................................................... 46
Pump priming ........................................................................................................................ 46
Start the pump ...................................................................................................................... 47
Pump operation precautions ................................................................................................. 47
Inspect the packed box after startup ..................................................................................... 48
Inspect the mechanical seal after startup .............................................................................. 48
Shut down the pump ............................................................................................................. 49
Make the final alignment of the pump and driver ................................................................... 50
Maintenance ........................................................................................................................... 51
Maintenance schedule .......................................................................................................... 51
Flood-damaged pumps ......................................................................................................... 52
Bearing maintenance ............................................................................................................ 52
Regrease the grease-lubricated bearings .......................................................................... 52
Lubricate the oil-lubricated bearings ................................................................................... 54
Bearing temperatures ......................................................................................................... 55
Bearing conditions .............................................................................................................. 55
Emergency ball bearing replacement ................................................................................. 55
Coupling lubrication ............................................................................................................ 55
Shaft-seal maintenance ........................................................................................................ 56
Packed stuffing box maintenance ....................................................................................... 56
Mechanical seal maintenance ............................................................................................ 56
Disassembly ......................................................................................................................... 57
Disassembly precautions ................................................................................................... 57
Drain the pump ................................................................................................................... 57
Remove the coupling guard ................................................................................................ 57
Remove the rotating element ............................................................................................. 60
Remove the bearings ......................................................................................................... 61
Remove the seals ............................................................................................................... 62
Remove the shaft sleeve .................................................................................................... 62
Remove the impeller ........................................................................................................... 62
Preassembly inspections ...................................................................................................... 63
Replace impeller wear rings ............................................................................................... 64
Radial clearances ............................................................................................................... 65
Reassembly .......................................................................................................................... 66
Install the impeller ............................................................................................................... 66
Assemble the rotating element ........................................................................................... 67
Install the bearings ............................................................................................................. 67
Install the rotating element ................................................................................................. 67
Assemble the casing .......................................................................................................... 67
Complete the assembly ...................................................................................................... 68
Bolt Torque Values - 3410 IOM .......................................................................................... 68
Spare parts ........................................................................................................................... 68
Troubleshooting .................................................................................................................... 70
Troubleshooting .................................................................................................................... 70
Parts Listings and Cross-Sectionals ................................................................................... 74
Drawings ............................................................................................................................... 74

Table of Contents
Model 3410 Installation, Operation, and Maintenance Manual 3
Parts list ................................................................................................................................ 75

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual4
Introduction and Safety
Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
• Installation
• Operation
• Maintenance
CAUTION:
Failure to observe the instructions contained in this manual could result in personal injury and
property damage, and may void the warranty. Read this manual carefully before installing and
using the product.
NOTICE:
Save this manual for future reference and keep it readily available.
Requesting other information
Special versions can be supplied with supplementary instruction leaflets. See the sales
contract for any modifications or special version characteristics. For instructions, situations, or
events that are not considered in this manual or in the sales documents, please contact the
nearest ITT representative.
Always specify the exact product type and identification code when requesting technical
information or spare parts.

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual 5
Safety
WARNING:
• The operator must be aware of the pumpage and take appropriate safety precautions to
prevent physical injury.
• Risk of serious injury or death. If any pressure-containing device is over-pressurized, it can
explode, rupture, or discharge its contents. It is critical to take all necessary measures to
avoid over-pressurization.
• Risk of death, serious personal injury, and property damage. Installing, operating, or
maintaining the unit using any method not prescribed in this manual is prohibited.
Prohibited methods include any modification to the equipment or use of parts not provided
by ITT. If there is any uncertainty regarding the appropriate use of the equipment, please
contact an ITT representative before proceeding.
• Risk of injury and/or property damage. Operating a pump in an inappropriate application
can cause over pressurization, overheating, and/or unstable operation. Do not change the
service application without the approval of an authorized ITT representative.
• Running a pump without safety devices exposes operators to risk of serious personal
injury or death. Never operate a unit unless appropriate safety devices (guards, etc.) are
properly installed. See specific information about safety devices in other sections of this
manual.
• Risk of death, serious personal injury, and property damage. Heat and pressure buildup
can cause explosion, rupture, and discharge of pumpage. Never operate the pump with
suction and/or discharge valves closed.
• Never operate the pump with the suction valve closed.
• Precautions must be taken to prevent physical injury. The pump may handle hazardous
and/or toxic fluids. Proper personal protective equipment should be worn. Pumpage must
be handled and disposed of in conformance with applicable environmental regulations.
Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and
regulations carefully before handling the product. They are published to help prevent these
hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
Hazard levels
Hazard level Indication
DANGER: A hazardous situation which, if not avoided, will
result in death or serious injury
WARNING: A hazardous situation which, if not avoided, could result in death or serious injury
CAUTION: A hazardous situation which, if not avoided, could result in minor or moderate injury

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual6
Hazard level Indication
NOTICE: • A potential situation which, if not avoided,
could result in undesirable conditions
• A practice not related to personal injury
Hazard categories Hazard categories can either fall under hazard levels or let specific symbols replace the
ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the ordinary hazard
levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
• Arc flash hazard
The Ex symbol
The Ex symbol indicates safety regulations for Ex-approved products when used in
atmospheres that are potentially explosive or flammable.
Environmental safety
The work area Always keep the pump station clean to avoid and/or discover emissions.
Recycling guidelines
Always recycle according to these guidelines:
1. If the unit or parts are accepted by an authorized recycling company, then follow local
recycling laws and regulations.
2. If the unit or parts are not accepted by an authorized recycling company, then return them
to the nearest ITT representative.
Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
• Dispose appropriately of all waste.
• Handle and dispose of the pumped fluid in compliance with applicable environmental
regulations.
• Clean up all spills in accordance with safety and environmental procedures.
• Report all environmental emissions to the appropriate authorities.
Reference for electrical installation
For electrical installation requirements, consult your local electric utility.
User safety
General safety rules
These safety rules apply:

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual 7
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash hazards.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
Safety equipment Use safety equipment according to the company regulations. Use this safety equipment within
the work area:
• Helmet
• Safety goggles, preferably with side shields
• Protective shoes
• Protective gloves
• Gas mask
• Hearing protection
• First-aid kit
• Safety devices
Electrical connections
Electrical connections must be made by certified electricians in compliance with all internation-
al, national, state, and local regulations. For more information about requirements, see sections
dealing specifically with electrical connections.
Precautions before work
Observe these safety precautions before you work with the product or are in connection with
the product:
• Provide a suitable barrier around the work area, for example, a guard rail.
• Make sure that all safety guards are in place and secure.
• Make sure that the equipment is properly insulated when it operates at extreme
temperatures.
• Allow all system and pump components to cool before you handle them.
• Make sure that you have a clear path of retreat.
• Make sure that the product cannot roll or fall over and injure people or damage property.
• Make sure that the lifting equipment is in good condition.
• Use a lifting harness, a safety line, and a breathing device as required.
• Make sure that the product is thoroughly clean.
• Make sure that there are no poisonous gases within the work area.
• Make sure that you have quick access to a first-aid kit.
• Disconnect and lock out power before servicing.
• Check the explosion risk before you weld or use electric hand tools.
Precautions during work
Observe these safety precautions when you work with the product or are in connection with the
product:
• Never work alone.
• Always wear protective clothing and hand protection.
• Stay clear of suspended loads.
• Always lift the product by its lifting device.
• Beware of the risk of a sudden start if the product is used with an automatic level control.
• Beware of the starting jerk, which can be powerful.
• Rinse the components in water after you disassemble the pump.

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual8
• Do not exceed the maximum working pressure of the pump.
• Do not open any vent or drain valve or remove any plugs while the system is pressurized.
Make sure that the pump is isolated from the system and that pressure is relieved before
you disassemble the pump, remove plugs, or disconnect piping.
• Never operate a pump without a properly installed coupling guard.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
• Never heat the condition monitor to temperatures in excess of 300°F (149°C).
• Never expose the condition monitor to open flames.
• Do not use the condition monitor in atmospheres containing acetic acid.
• Always wear protective gloves. The pump and condition monitor can be hot.
Wash the skin and eyes
1. Follow these procedures for chemicals or hazardous fluids that have come into contact with
your eyes or your skin:
Condition Action
Chemicals or hazardous
fluids in eyes 1. Hold your eyelids apart forcibly with your fingers.
2. Rinse the eyes with eyewash or running water for at least 15 minutes.
3. Seek medical attention.
Chemicals or hazardous
fluids on skin 1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. Seek medical attention, if necessary.
Safety regulations for Ex-approved products in potentially
explosive atmospheres
Description of ATEX
The ATEX directives are a specification enforced in Europe for electrical and non-electrical
equipment. ATEX deals with the control of potentially explosive atmospheres and the
standards of equipment and protective systems used within these atmospheres. The relevance
of the ATEX requirements is not limited to Europe. You can apply these guidelines to
equipment installed in any potentially explosive atmosphere.
Guidelines for compliance
Compliance is only fulfilled when the pump is operated within its intended use, for example
within its intended hydraulic range. The conditions of the service must not be changed without
approval of an authorized ITT representative. When installing or maintaining explosion-proof
pumps, follow these guidelines:
• Always install ATEX-approved equipment in compliance with the directive and applicable
standards (IEC/EN 60079–14).
• Do not install explosion proof products in locations that are classified as hazardous in the
national electric code, ANSI/NFPA 70–2005.
WARNING:
Risk of serious personal injury. Applying heat to impellers, propellers, or their retaining devices
can cause trapped liquid to rapidly expand and result in a violent explosion. This manual clearly
identifies accepted methods for disassembling units. These methods must be adhered to.
Never apply heat to aid in their removal unless explicitly stated in this manual.
If there are any questions regarding these requirements, the intended use, or if the equipment
requires modification, contact an ITT representative before you proceed.
Personnel requirements
ITT disclaims all responsibility for work done by untrained and unauthorized personnel.

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual 9
These are the personnel requirements for Ex-approved products in potentially explosive
atmospheres:
• All work on the product must be carried out by certified electricians and ITT-authorized
mechanics. Special rules apply to installations in explosive atmospheres.
• All users must know about the risks of electric current and the chemical and physical
characteristics of the gas and/or vapor present in hazardous areas.
• Any maintenance for Ex-approved products must conform to international and national
standards (for example IEC/EN 60079-17).
Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in
potentially explosive atmospheres:
• Only use the product in accordance with the approved motor data stated on the
nameplates.
• The Ex-approved product must never run dry during normal operation. Dry running during
service and inspection is only permitted outside the classified area.
• Never start a pump without the proper priming.
• Before you start working with the product, make sure that the product and the control panel
are isolated from the power supply and the control circuit, so they cannot be energized.
• Do not open the product while it is energized or in an explosive gas atmosphere.
• Make sure that thermal contacts are connected to a protection circuit according to the
approval classification of the product.
• Intrinsically safe circuits are normally required for the automatic level-control system by the
level regulator if mounted in zone 0.
• The yield stress of fasteners must be in accordance with the approval drawing and the
product specification.
• Make sure that the equipment is properly maintained:
• Monitor the pump components and the end temperature of the liquid.
• Maintain proper bearing lubrication.
• Do not modify the equipment without approval from an authorized ITT representative.
• Only use parts that have been provided by an authorized ITT representative.
Equipment for monitoring
For additional safety, use condition-monitoring devices. Condition-monitoring devices include
but are not limited to these devices:
• Pressure gauges
• Flow meters
• Level indicators
• Motor load readings
• Temperature detectors
• Bearing monitors
• Leak detectors
• PumpSmart control system

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual10
Product approval standards
Regular standards
WARNING:
Use of equipment unsuitable for the environment can pose risks of ignition and/or explosion.
Ensure that the code classifications on the pump are compatible with the specific environment
in which the equipment is to be installed. If they are not compatible, do not operate the
equipment and contact an ITT representative before proceeding.
All standard products are approved according to CSA standards in Canada and UL standards
in USA. The drive unit degree of protection follows IP68. See the nameplate for maximum
submersion, according to standard IEC 60529.
All electrical ratings and performance of the motors comply with IEC 600341.
Explosion-proofing standards
All explosion-proof products for use in explosive atmospheres are designed in compliance with
one or more of the following approvals:
• EN, ATEX Directive 94/9/EC
• FM According to NEC
• Class 1 Div 1 Groups “C”, and “D”
• Class 2 Div 1 Groups “E”, “F”, and “G”
• Class 3 Div 1 Hazardous Locations
ATEX/IECEx:
• Group: IIC
• Category: Ex ia
• Temperature Class: T4 (for ambients up to 100ºC)
• ATEX Marking: Ex II 1 G
CSA certification Intrinsically safe for:
• Class I, Div. 1, Groups A, B, C, D
• Class II, Div. 1, Groups E, F, G
• Class III
• Certified to Canadian and US requirements

Introduction and Safety
Model 3410 Installation, Operation, and Maintenance Manual 11
Product warranty
Coverage ITT undertakes to remedy faults in products from ITT under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to an ITT representative within the warranty period.
• The product is used only under the conditions described in this manual.
• The monitoring equipment incorporated in the product is correctly connected and in use.
• All service and repair work is done by ITT-authorized personnel.
• Genuine ITT parts are used.
• Only Ex-approved spare parts and accessories authorized by ITT are used in Ex-approved
products.
Limitations The warranty does not cover faults caused by these situations:
• Deficient maintenance
• Improper installation
• Modifications or changes to the product and installation made without consulting ITT
• Incorrectly executed repair work
• Normal wear and tear
ITT assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Warranty claim ITT products are high-quality products with expected reliable operation and long life. However,
should the need arise for a warranty claim, then contact your ITT representative.

Transportation and Storage
Model 3410 Installation, Operation, and Maintenance Manual12
Transportation and Storage
Inspect the delivery
Inspect the package
1. Inspect the package for damaged or missing items upon delivery.
2. Note any damaged or missing items on the receipt and freight bill.
3. File a claim with the shipping company if anything is out of order.
If the product has been picked up at a distributor, make a claim directly to the distributor.
Inspect the unit
1. Remove packing materials from the product.
Dispose of all packing materials in accordance with local regulations.
2. Inspect the product to determine if any parts have been damaged or are missing.
3. If applicable, unfasten the product by removing any screws, bolts, or straps.
For your personal safety, be careful when you handle nails and straps.
4. Contact your sales representative if anything is out of order.
Transportation guidelines
Precautions
WARNING:
• Stay clear of suspended loads.
• Observe accident prevention regulations in force.
Pump handling
WARNING:
Dropping, rolling or tipping units, or applying other shock loads, can cause property damage
and personal injury. Ensure that the unit is properly supported and secure during lifting and
handling.
CAUTION:
Risk of injury or equipment damage from use of inadequate lifting devices. Ensure lifting
devices (such as chains, straps, forklifts, cranes, etc.) are rated to sufficient capacity.
Lifting methods
WARNING:
• All lifting must be done in compliance with all applicable regulations/standards.
• Safe lifting points are specifically identified in this manual. It is critical to lift the equipment
only at these points. Integral lifting eyes or eye bolts on pump and motor components are
intended for use in lifting the individual components only.
• Lifting and handling heavy equipment poses a crush hazard. Use caution during lifting and
handling and wear appropriate Personal Protective Equipment (PPE, such as steel-toed
shoes, gloves, etc.) at all times. Seek assistance if necessary.
• Do not attach sling ropes to shaft ends.
The unit must be unloaded and handled by lifting equally at four or more points on the
baseplate. The lugs on the upper half casing are designed for lifting the upper half of the casing
only.

Transportation and Storage
Model 3410 Installation, Operation, and Maintenance Manual 13
Pumps mounted horizontally
Pump mounting Lifting method
A bare pump Place a nylon sling, chain, or wire rope around both bearing housings.
A pump mounted on a base that
has lifting holes WARNING:
If the driver has been mounted on the
baseplate at the factory, then it is safe to
lift the entire assembly.
CAUTION:
Take care to size equipment for unbal-
anced loads that may exist if the driver is
not mounted on the base at the time of
lifting. The driver may or may not be
mounted at the factory.
Attach nylon slings, chains, or wire rope to ANSI/OSHA Standard S
hooks. Then attach the hooks in the holes provided in the four corners
of the base. Make sure that the points of the hooks do not touch the
bottom of the pump base. Size the equipment for the load so that the
lift angle is less than 45° from the vertical.
A pump mounted on a base
that does not have lifting holes Place one sling around the outboard bearing housing and place the another sling around the back-end of the driver as close to
the mounting feet as possible. Make certain that the sling will
not damage the housing cover or conduit boxes. Join the free
ends of the slings together and place over the lifting hook.
1. Nylon sling, chain, or wire rope
2. Do not lift the entire pump with these lugs
3. Choker hitch around the bearing frame
Figure 1: The proper lifting method for a horizontal bare pump

Transportation and Storage
Model 3410 Installation, Operation, and Maintenance Manual14
Figure 2: The proper lifting method for a horizontal pump on a base with lifting holes
Figure 3: The proper lifting method for a horizontal pump on a base without lifting holes
Pumps mounted vertically
Pump mounting Lifting method
Half pedestal Place a nylon sling chain or wire rope around both flanges. Use a latch
hook or standard shackle and end loops. Be sure the lifting equipment
is long enough to keep the lift angle less than 30° from the vertical.
Full pedestal Install eyebolts in the three holes provided at the top of the support
and tighten securely. Attach a chain or wire rope using a latch hook or
standard shackle and end loop. You must use shoulder eyebolts that
are manufactured per ANSI B18.15 and sized to fit the holes provided.
Be sure the lifting equipment is long enough to keep the lift angle less
than 30° from the vertical.
1. Nylon sling, chain, or wire rope
Figure 4: The proper lifting method for a vertical pump mounted on a half pedestal

Transportation and Storage
Model 3410 Installation, Operation, and Maintenance Manual 15
1. Nylon sling, chain, or wire rope
Figure 5: The proper lifting method for a vertical pump mounted on a full pedestal
Storage guidelines
Pump storage requirements
Storage requirements depend on the amount of time that you store the unit. The normal
packaging is designed only to protect the unit during shipping.
Length of time in storage Storage requirements
Upon receipt/short-term (less than six months) • Store in a covered and dry location.
• Store the unit free from dirt and vibrations.
Long-term (more than six months) • Store in a covered and dry location.
• Store the unit free from heat, dirt, and vibra-
tions.
• Rotate the shaft by hand several times at least
every three months.
Treat bearing and machined surfaces so that they are well preserved. Refer to drive unit and
coupling manufacturers for their long-term storage procedures.
You can purchase long-term storage treatment with the initial unit order or you can purchase it
and apply it after the units are already in the field. Contact your local ITT sales representative.

Product Description
Model 3410 Installation, Operation, and Maintenance Manual16
Product Description
General description
Product description
Goulds Model 3410 is a single-stage, double-suction pump with the following capabilities:
Measurement Maximum tolerance
Capacity 12,000 gpm (45,425 lpm)
Head 530 ft (161 m)
Pressure • Cast iron: 175 psig (1,200 kPa)
• Ductile iron or steel: 250 psig (1,725 kPa)
Temperature 350°F (177°C)
Pump sizes with an H designation are designed for a higher flow than the equivalent size
standard pump. External casing dimensions are the same, but the H pumps have wider casing
cutwaters and impellers.
The complete model line has four different shafts with only two bearing assemblies. Standard
constructions are all-iron, bronze fitted, 316SS fitted, and all 316SS. Other constructions are
available upon request.
Right-hand rotation is standard. Left-hand rotation is available as an option. The rotation can be
changed after installation without any additional parts.
Vertical applicationModel 3410 is available in a vertical configuration (3410V). This arrangement is ideal for
applications with limited space such as shipboard service. A rugged fabricated-steel frame
supports the pump and driver, providing a machined fit for positive alignment when using
standard P-base motors.
Figure 6: Vertical configuration
WARNING:
Leakage of pumped liquid can create an explosive environment. Make sure that the pumped
liquid is compatible with all pump materials it comes in contact with.

Product Description
Model 3410 Installation, Operation, and Maintenance Manual 17
1This casing uses a partial splitter.
Casing The casing is split horizontally. The upper and lower halves are held together with capscrews
and studs on the side of each stuffing box to aid in disassembly and reassembly. The casing is
supported by integrally cast feet. Separate bearing housings are attached directly to machined
fits in each end of the casing with capscrews.
Fourteen of the 27 casings are double volute as follows:
• 4x6-11
• 4x6-11H
• 6x8-11
• 8x10-21
• 8x10-12
• 8x10-14
• 8x10-17
• 8x10-17H
• 10x12-12
• 10x12-12H1
• 10x12-14
• 10x12-17
• 10x12-15
• 12x14-14
• 12x14-15
Flanged suction and discharge connections are located in the lower half of the casing and
conform to ANSI 16.1/16.5 class 125/150. The 125# flat-face flanges are standard with 250#
flat-face available as an option.
DIN flanges may also be provided on all sizes except the 6x8-22. The flanges are provided in
accordance with EN 1092-2. These flanges are smooth, flat faced and meet or exceed the
minimum thickness required by the PN rating. The flanges provided are PN16 on smaller sizes
and PN10 on the larger sizes.
The casings are standard with the following parts:
• Two jackscrews (except S group)
• Two lifting lugs
• Two tapered dowel pins for alignment
• One 0.030 in. (0.0762 cm) parting gasket
The upper-half casing has a vent connection, a priming connection, and two stuffing box seal
ring connections. The lower half has two drain connections.
Impeller • Enclosed, double suction
• Axial hydraulic balance
• Key driven
• Dynamically balanced, when the diameter to width ratio is less than six
Wear rings • Casing wear rings are supplied as standard to maintain proper running clearance and to
minimize leakage between the suction and discharge chambers in the casing. Each casing
ring is held in place by a single anti-rotation pin located in a milled slot at the horizontal
parting surface.

Product Description
Model 3410 Installation, Operation, and Maintenance Manual18
• Optional impeller wear rings are available on all pump sizes. The impeller wear rings are
held in position by axial setscrews. Field installation of impeller rings requires a
remachining of the impeller hubs.
• The casing rings remain the same for designs with or without impeller rings.
Shaft The shaft is a heavy-duty design that minimizes deflection and vibration. The shaft deflection is
a maximum of 0.002 in. (0.051 mm) at the stuffing box face under the worst operating
conditions. The shaft on M, L, and XL group pumps is completely dry with gasket seals
between the impeller hubs and shaft sleeves. The S group does not have a completely dry
shaft. The S group is standard with a 420 stainless steel shaft. The M, L, and XL sizes have an
ANSI 4140 steel shaft standard with an option for 316 stainless steel.
Shaft sleeves The M, L and XL group pumps have standard shaft sleeves. They are keyed to the shaft at the
impeller and held axially in place using threaded sleeve nuts. The S group pumps are standard
without shaft sleeves, but sleeves are available.
Stuffing box Non-asbestos stuffing box packing is standard. The stuffing box contains split lantern rings and
renewable stuffing box throat bushings. Tapped openings are provided for water sealing from
either the pump casing or an outside source. Bypass piping is optional. Two-piece, investment
cast, 316 stainless steel, non-quench glands are standard on all 3410 pumps.
Mechanical seals • Mechanical seals are available as an option on the Model 3410. Oversize stuffing box
bores are standard on pumps with factory-installed mechanical seals. This provides
greater flexibility and an improved operating environment.
• Pumps that are supplied with standard packed boxes can be converted to mechanical
seals in the field. This conversion requires either remachining of the stuffing box to
accommodate the mechanical seal or remachining of the gland to adapt to the existing
stuffing box. If the stuffing box bores are remachined, then all standard Model 3410
mechanical seals and the standard I.D. pilot glands can be used.
• Balanced seals require conversion to stepped sleeves. Most unbalanced mechanical seals
will fit in the standard packed box bores, but this requires remachining the I.D. pilot off the
glands. In this case, the glands must be centered on the shaft or the sleeve using a feeler
gauge.
• Pumps supplied with mechanical seals can also be converted to packed boxes in the field.
A cartridge conversion kit is available and includes a box of fittings plus sleeves to convert
oversize bores to standard packed-box bores.
Bearings • The Model 3410 is standard with double-row ball thrust bearings and a single-row deep
groove ball bearing at the coupling end. There are only two sizes of bearing housings and
bearings used on the Model 3410 product line. The S and M groups use identical bearings,
as do the L and XL groups. The thrust bearing is held in position with a tapered snap ring
and is locked in the thrust bearing housing to take any unbalanced axial thrust load. The
radial bearing is free to float axially in the bearing housing taking radial loads only.
• Grease lubrication is standard. Oil lubrication is optional and uses the same shaft,
bearings, and bearing housings. Bearing cooling is available with oil lubrication only and is
required for temperatures over 250°F (121°C). The bearing housings are completely
sealed by Inpro VBS bearing isolators.