Flowserve
Flowserve Corporation is one of the world’s largest industrial and environmental machinery manufacturers. It has a rich history of developing sustainable technologies that started 230 years ago with the founding company Simpson & Thompson.
In 1997, Flowserve emerged as a result of the merger of two large motion and control manufacturers, Durco International and BW/IP. At present, Flowserve holds the most comprehensive portfolio of pumps, valves, and other fluid control products and has several big brands under its umbrella, including TKL, SIHI, Durco, and more.
THOMPSONS KELLY AND LEWIS (TKL)
Manufacturer of centrifugal pumps and steel castings. The brand was founded as Thompson & Co. in 1875 until it merged with Kelly & Lewis to form Thompsons, Kelly & Lewis (TKL) in 1987.TKL later became a subsidiary of Flowserve Corporation in 2004.
TKL offers comprehensive technology and advanced products that have been honed for over a century. Its proven designs give companies the most efficient solutions to their pumping needs. In addition to its innovations, TKL continues to produce replacement designs from the 1980s and 1990s, enabling simple changeouts of these heritage pumps without pipe modifications.
Centrifugal Pump - TKL EC Series
TKL’s EC Series is designed to handle large flow and high head conditions in mines and water transfer applications. The EC centrifugal pumps have a multistage, horizontally split-case configuration, making inspection and maintenance fast and easy.
Additionally, accessing the common wear parts wouldn’t require removing the motor or the suction and discharge connections. Their design allows for a lower net positive head required and lower axial thrust. The EC pumps can also be mounted horizontally or vertically, giving more installation flexibility.
Features & Benefits
- Horizontal split-case design allows easy access to internal parts
- Pump rotor can be removed without disturbing the motor or alignment
- Horizontal or vertical mounting provisions to suit application piping requirements
- Reduced friction wear with shaft sleeves between the stages and in the stuffing boxes
- Stuffing Boxes graphite impregnated packing allows leakage adjustment for long life
Available Options
Each EC pump can be customised according to your specific fluid transfer needs.
- Spare parts
- Base/mounting plates
- Sizes from 200mm to 600mm
Key Specifications
- Flows to 39,000 LPM or 2340 m3/h
- Heads to 650 m
- Pressures to 88 bar
- Temperatures from -30°C to 150°C
Principle of Operation
Fluid enters the suction line and falls on the impeller eye and is “centrifuged” (hence the name) to the impeller periphery, with assistance from the impeller vanes.
As the impeller rotates, it imparts kinetic energy onto the liquid surrounding it due to friction. The liquid moves towards the outer periphery of the impeller; its kinetic energy is then changed to pressure. The impeller has vanes separated by channels through which the liquid flows. Each channel has an increasing flow path area. As the flow path area expands, the liquid’s velocity decreases and the pressure increases.
For the EC pump with a multistage configuration, the process repeats as it goes through each stage until it reaches the discharge port.
Applications
Industries
- Mining
- Chemical Processing
- Water Resources
- General Industries
- Water Treatment
- Renewable Fuel
- Production
- Drilling
- Flood Control
- Irrigation
Fluids Handled
- Heavy Oil
- Oil Sands and Shale
- Molten Salt Offsites
- Water
- Wastewater
- Flood Water
- Pulpy Liquids
- Gas
- Chemicals
Centrifugal Pump - TKL MVE Industrial Process
Features & Benefits
- Single volute, symmetrical casing with integral suction and discharge for increased reliability
- Mechanically balanced, mixed-flow, enclosed impeller extends seal and bearing life
- Rigid overhung, stiff shaft design in stainless steel
- Cast Iron casing and cover with large openings give access to gland and stuffing box
- Two heavy-duty, grease-lubricated ball bearings carry all radial and thrust loads
- Back pull-out design simplifies maintenance without disturbing piping
Available Options
- Top discharge option
- Material options: bronze, zinc-free bronze, austenitic cast iron and spheroidal/nodular irons
- Shaft sleeve
- Wear rings
- Vertical design option
- Close-coupled or immediate shaft-driven option
- Special high-speed version
- Spare parts
- Sizes from 200 mm to 400 mm
- Base/mounting plate
Key Specifications
- Flows to: 45,000 LPM ot 2700 m3/h
- Heads to: 15 m
- Press. to: 7 bar
- Temp: to 100°C
Principle of Operation
Fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery, with assistance from the impeller vanes.
As the impeller rotates, it imparts kinetic energy onto the liquid surrounding it due to friction. The liquid moves towards the outer periphery of the impeller; its kinetic energy is then changed to pressure. The impeller has vanes separated by channels through which the liquid flows. Each channel has an increasing flow path area. As the flow path area expands, the liquid’s velocity decreases and the pressure increases.
Due to the unique shape of the volute casing, the liquid undergoes further velocity decrease and pressure increase. The liquid is then discharged through the discharge port.
Applications
Industries
- Pulp & Paper
- Mining
- Steel & Primary Metals
- Food & Beverage
- Corn Wet Milling &
- Ethanol
- Agriculture & Irrigation
- Municipal
- Dewatering and Drainage Needs
- Pollution Control
Fluids Handled
- Basic (Organic & Inorganic)
- Water
- Wastewater
- Flood Water
- Pulpy Liquids
Terra Titan Slurry Pumps
Terra-Titan serves as the vertical version of the Titan Slurry Series. The range included powerful centrifugal sump pumps with a cantilever shaft designed to perform under extreme conditions in various industries.
The Terra-Titan slurry pumps are economical, durable, and have a proven record of moving fluids with fine or coarse solids. Additionally, they can handle neutral and acidic mixtures with ease. Terra-Titan is also known for operating under high-flow and dry-run conditions without failures.
Features & Benefits
- Rigid one-piece suspended, oversized cantilever shaft minimises vibration
- No submerged bearings or seals leading to safe run-dry conditions
- Double-suction, hydraulically balanced open impeller prevents air-lock and solid suspension
- Simple and fast external impeller adjustment
- Renewable terrapene shaft sleeve eliminates shaft wear
- Greased-for-life, heavy-duty, self-aligning roller bearings
Available Options
- Material options: Terraprene, hard iron
- Fluoropolymer coating option
- Bottom suction pipe available
- Multiple drive options
- Available bottom suction tailpipe
- Sizes from 40 mm to 125 mm
- Sump depths from 700 mm to 1800 mm
- Spare parts
Key Specifications
- Flows to 250 m3/h
- Heads to 45 m
- Pressures to 5 bar
- Temperatures to 100°C
Principle of Operation
The Terra Titan vertical slurry pump is a centrifugal pump. It transports fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. This type of rotational energy typically comes from an engine or electric motor. Fluids enter the rapidly rotating impeller along its axis and are cast out through centrifugal force along its circumference through the impeller’s vane tips. This action by the impeller increases the fluid’s velocity and pressure and also directs it toward the pump outlet. The pump casing is designed to constrict fluid from the pump inlet, direct it into the impeller, then slow and control the fluid before discharge.
Applications
Industries
- Pulp production and processing
- Mining and mineral processing
- Steel and primary metals processing
- Carbon pulp transfer
- Food processing
Fluids Handled
- Fly ash
- Mill scale
- Liquid effluent
- Wastewater
- Sugar mill waste
Titan Slurry Pumps
TKL Titan Slurry is a horizontal, single-stage, end-suction pump that uses an overhung impeller style, which demonstrates Flowserve’s engineering expertise in hydraulic design.
The heavy-duty Titan Slurry pump can handle high concentrations of abrasive solids in suspension without breaking. Its unique dual case design allows the use of hard metal or elastomeric liner for more application flexibility. Additionally, this centrifugal pump can be bolted in place of a similar dual-casing slurry pump with little to no site modification.
Features & Benefits
- Dual casing with innovative liner system maximises pump life
- Fully interchangeable elastomeric or hard metal liner for flexibility
- Closed vane impeller with adjustable face clearance and excellent wearability
- Threaded shaft design replaces troublesome impeller nut used in most pumps
- The removable stuffing box offers numerous shaft sealing options without modification
- Bearing cartridge with back-to-back taper roller bearings efficiently carries axial and belt loads
Available Options
- Direct coupled option
- Material options
- Impeller options: open-type, mill-grade
- Gland packing and sealing options
- Optional expeller seal
- Spare parts
- Base/mounting plates
- Sizes from 50mm to 350mm
Key Specifications
- Flows to 60,000 Liters per minute or 3,600 m3/h
- Heads to 90 m
- Pressures to 40 bar
- Temperatures to 110°C
Principle of Operation
Fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery, with assistance from the impeller vanes.
As the impeller rotates, it imparts kinetic energy onto the liquid surrounding it due to friction. The liquid moves towards the outer periphery of the impeller; its kinetic energy is then changed to pressure. The impeller has vanes separated by channels through which the liquid flows. Each channel has an increasing flow path area. As the flow path area expands, the liquid’s velocity decreases and the pressure increases.
Due to the unique shape of the volute casing, the liquid undergoes a further velocity decrease and pressure increase. The liquid is then discharged through the discharge port.
Applications
Industries
- Pulp & Paper
- Mining, Milling and Quarry
- Steel & Primary Metals
- Cement
- Floatation
- Dredging
- Alumina Production
- Dewatering
- Sugar Processing
Fluids Handled
- Water
- Conventional Steam
- Wastewater
- Pulpy Liquids
- Slurries/Abrasive slurries
- Sand and Gravel
DURCO CHEMICAL PROCESS PUMPS
Duriron Company (also known as Durco) started business in 1912 as an industrial components manufacturer. It became known for its technologies, setting the standard in handling extremely corrosive materials. During the First World War, Durco was the go-to of explosives manufacturers, where its “denitrating towers” became highly in demand for the safe handling of nitric and sulfuric acids. In World War II, the company devoted its efforts to supplying pumps and valves to produce atomic bombs.
Eighty-five years later, Durco acquired the California-based pump manufacturer BW/IP International, and the merger gave birth to the Flowserve Corporation in July 1997. At present, Durco serves as a brand under Flowserve, maintaining its expertise in designing and manufacturing chemical process pumps and valves.
Chemical Pump - Durco Mark 3 ASME ANSI
Flowserve’s Durco Mark 3 Pump centrifugal pumps are highly regarded as an industry workhorse for their reliability in transferring chemicals. These sealed pumps incorporate advanced technologies responsible for their outstanding hydraulic performance and minimised total cost of ownership.
The Mark 3 ASME pumps are fully compliant with ASME (ANSI) B73.1 design criteria, CE marked, and conform to applicable directives such as ATEX.
Features & Benefits
- Reverse vane impeller preserves original performance throughout the pump’s life
- SealSentry seal chambers with flow modifiers extend seal life
- External micrometre allows impeller clearance adjustment in seconds
- Large shaft and bearing components reduce shaft deflection and extend bearing life
- Back pullout design for faster servicing without removing the casing, piping, or motor
- Designed with four precision-machined, metal-to-metal fits for improved reliability
Available Options
- Sealing options: dynamically/mechanically sealed
- Sealless mag drive option
- Power frames
- Seal chamber options
- Shaft and sleeve options
- Optional impeller designs: low flow, recessed, front vane – open impeller
- Others: mounting, pump guard, coupling guard, shaft guard, baseplate
- 30 pump sizes
- Spare parts
Key Specifications
- Flows to 1700 m3/h
- Heads to 300 m
- Pressures to 27 bar
- Temperature range from -73°C to 370°C
- Discharge sizes from 25 to 200 mm
Applications
- Acid transfer
- Caustic and chlor-alkali
- Man-made fibres
- Polymers
- Slurry processing
- Solvents
- Volatile organic compounds
- Waste processing
Industrial Chemical Pumps
Fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery, with assistance from the impeller vanes.
As the impeller rotates, it imparts kinetic energy onto the liquid surrounding it due to friction. The liquid moves towards the outer periphery of the impeller; its kinetic energy is then changed to pressure. The impeller has vanes separated by channels through which the liquid flows. Each channel has an increasing flow path area. As the flow path area expands, the liquid’s velocity decreases and the pressure increases.
Due to the unique shape of the volute casing, the liquid undergoes a further velocity decrease and pressure increase. The liquid is then discharged through the discharge port.
DURCO MARK 3 L-FLO PUMPS
Engineered to ASME (ANSI) B73.1 standards, the Durco Mark 3 Lo-Flo delivers superior reliability in low-flow, high-head applications. Featuring Flowserve’s patented radial vane impeller and concentric casing, it minimises radial loads and shaft vibration—extending bearing and seal life.
- Flows to 50 m3/h
- Heads to 300 m
- Pressures to 31 bar
- Temperatures from -75°C to 370°C
DURCO MARK 3 SEALMATIC PUMPS
No mechanical seal required. Durco Mark 3 Sealmatic pump’s dynamic sealing repeller expels fluid from the seal chamber, making it ideal for tough sealing applications—without external flush or contamination risk. ASME (ANSI) B73.1 compliant.
- Flows to 1,680 m3/h
- Heads to 230 m
- Pressures to 31 bar
- Temperatures from -75°C to 370°C
DURCO MARK 3 UNITISED SELF-PRIMING PUMPS
The Durco Mark 3 Unitised self-priming pump primes without external pressure and is designed to lift liquids from below ground. Installed at ground level, it offers easier, more cost-effective installation and maintenance than submersible pumps.
- Flows to 320 m3/h
- Heads to 120 m
- Pressures to 20 bar
- Temperatures to 370°C
- Static suction lift to 6 m
DURCO MARK 3 RECESSED IMPELLER PUMPS
Combining ANSI-standard design with vortex flow, the Durco Mark 3 Recessed Impeller Pump easily handles solids and fibrous slurries. Thick-wall wet-end components extend pump and seal life.
- Flows to 455 m3/h
- Heads to 120 m
- Pressures to 20 bar
- Temperatures from -75°C to 370°C
Chemical Pump - Durco Mark 3 ISO
The Durco Mark 3 ISO pump is renowned for its cutting-edge design, performance, efficiency, and dependability while handling the most demanding applications. It also complies with ISO 2858, ISO 15783, and ISO 5199 design standards.
The Durco Mark 3 ISO’s tough construction provides users with considerable operational and maintenance-enhancing advantages that lower the total cost of ownership for pumps.
Features & Benefits
- SealSentry seal chambers with flow modifiers significantly extend seal life
- External micrometre impeller adjustment mechanism simplifies maintenance
- High performance and reliability achieved by using energy-efficient hydraulics
- Modular design and high interchangeability provide maximum flexibility
- Back pullout design for faster servicing without removing the piping, casing, or motor
- Precision cast reverse vane impeller preserves initial pump performance
Designed for Demanding Applications
High-pressure components, a generous corrosion allowance and a wide range of materials of construction are just some of the features and options that ensure Durco Mark 3 ISO pumps perform reliably under demanding conditions.
Mechanically Sealed Models
Durco Mark 3 ISO mechanically sealed pumps are the standard bearer for ISO chemical process pumps. They are recognized worldwide for their ability to tackle the most demanding applications with exceptional performance, efficiency and reliability.
Sealless Magnetic Drive Models
Durco Mark 3 ISO MAG sealless magnetic drive pumps provide dependable, leak-free performance in all types of applications. They are particularly well-suited for applications involving toxic, explosive and valuable liquids.
Available Options
- ATEX, Food-grade, Drinking water, CUTR configurations available
- Sealless mag drive configuration available
- Wide range of construction materials
- Impeller options: reverse vane, open impeller, closed impeller
- Impeller material options
- Centerline-mounted casing available
- Drain, gauge, recirculation connections are available
- Size Range: 20 mm to 200 mm
- Spare parts
Key Specifications
- Flows to 1,400 m³/h (6,160 US gpm)
- Heads to 220 m (720 ft)
- Pressures to 25 bar (365 psi)
Long Coupled
- Flows to 1400 m3/h
- Heads to 220 m
- Pressures to 25 bar
Close Coupled
- Flows to 570 m3/h
- Heads to 100 m
- Pressures to 25 bar
Self-Primer
- Flows to 100 m3/h
- Heads to 100 m
- Pressures to 25 bar
Vertical Sump
- Flows to 1400 m3/h
- Heads to 250 m
- Pressures to 25 bar
Recessed Impeller
- Flows to 750 m3/h
- Heads to 100 m
- Pressures to 25 bar
Principle of Operation
In Durco Mark 3 ISO centrifugal pumps, fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery. As the impeller rotates, it imparts kinetic energy onto the fluid. The impeller vanes have channels with an increasing flow path area. As the flow path area expands, the passing fluid’s velocity decreases and the pressure increases. The fluid then falls to the volute. Due to the unique shape of the volute casing, the fluid undergoes a further velocity decrease and pressure increase. This causes the liquid to be discharged through the discharge port.
Applications
- Acid transfer
- Brine
- Chemical processing
- Corrosive services
- Food and beverage processing
- Hydrocarbon processing
- Petrochemical processing
- Pharmaceuticals
- Polymers
- Pulp and paper
- Seawater
- Slurries
- Solvents
- Steel and primary metals
- Water and wastewater treatment
Chemical Pump - Durco Mark 3 High-Capacity
The all new Durco Mark 3 Group 4 pump offers increased capacity with proven Durco performance and reliability along with ASME B73.1 design features.
Offering flow rates to 3,861 m3/h (17,000 US gpm) — well beyond ASME size limits — the Durco Mark 3 Group 4 pump is ideal for high-flow, high-head applications in the chemical processing and general industries.
Features & Benefits
- Reverse vane impeller is the only impeller design that offers repeatable pump performance throughout the life of the pump. Open impellers available.
- Durco SealSentry seal chambers feature flow modifiers that extend seal life by providing optimal seal chamber environments.
- Standard sealed bearing housing with labyrinth bearing isolators to keep lubricant in and contaminants out.
- Two-piece power end design with self-contained bearing housing reduces maintenance costs and facilitates predictive maintenance.
- Heavy-duty radial and thrust bearings are selected for long life and reliability.
- External micrometre impeller adjustment accurately sets impeller clearance in 20 seconds, simplifying maintenance.
- Rugged shaft and bearing design extends seal life, bearing life and reduces shaft
Lower Repair and Replacement Costs
Abrasive wear is on the machinable rear cover, rather than the more expensive casing. Furthermore, there are no costly sideplates, which can provide leak paths.
Prolonged Seal and Bearing Life
Balance holes maintain low, predictable seal chamber pressure and thrust loads.
Proven Power End
Durco ANSI 3A reliability the Mark 3 power end incorporates all the proven reliability-, maintenance- and performance-enhancing features of the Durco ANSI 3A power end. These mitigate the risk of mechanical failure under even the harshest operating conditions.
Reliability-Enhancing Constructions
Precision machined, metal-to-metal, interconnecting faces at the casing, seal chamber, adapter and bearing housing provide reliable sealing and optimum concentricity.
Available Options
- 13 Sizes on two bearing frame platforms
- ATEX, Food-grade, Drinking water, CUTR configurations available
- Sealless mag drive configuration available
- Wide range of construction materials
- Impeller options: reverse vane, open impeller, closed impeller
- Impeller material options
- Centerline mounted casing available
- Drain, gauge, recirculation connections available
- Size Range: 20 mm to 200 mm
- Spare parts
Key Specifications
- Flows to , LPB or 3861 m3/h
- Heads to 125 m (410 ft)
- Discharge pressures to 19 bar (275 psi)
- Temperatures from -73°C to 204°C (-100°F to 400°F); ductile iron: -29°C to 204°C (-20°F to 400°F)
Principle of Operation
In Durco Mark 3 Group 4 High-Capcity centrifugal pumps, fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery. As the impeller rotates, it imparts kinetic energy onto the fluid. The impeller vanes have channels with an increasing flow path area. As the flow path area expands, the passing fluid’s velocity decreases and the pressure increases. The fluid then falls to the volute. Due to the unique shape of the volute casing, the fluid undergoes a further velocity decrease and pressure increase. This causes the liquid to be discharged through the discharge port.
Applications
- Bulk tank transfer
- Chemical transfer
- Wastewater scrubber
- Cooling tower feed
- Ethanol processing
- Light chemical slurries
- Corn wet milling
- Reverse osmosis plants
- Evaporator feed
Chemical Pump - Durco PolyChem GRP Non-Metallic
Durco PolyChem GRP pump is an end suction, single-stage, centrifugal pump made in accordance with ASME B73.1 regulations. The pump is created using Glass Reinforced Phenolic (GRP), which is known for its economical price, long life, and superior corrosion resistance.
The pump is created using Glass Reinforced Phenolic (GRP), which is known for its economical price, long life, and superior corrosion resistance. A GRP pump is often preferred over expensive high-alloy metal pumps for handling extremely corrosive materials such as acid, chlorine, and saltwater.
Features & Benefits
- Made of composite material for cost-effective corrosion resistance, non-galling, non-sparking and non-conductive attributes
- Tapered polygon impeller drive for exceptional torque-carrying ability and strength
- Semi-open impeller for consistent high efficiencies
- External micrometre impeller adjustment allows for quick and accurate impeller setting
- Fully gusseted centerline discharge casing with integrally moulded flanges for optimal nozzle-loading capabilities
- Uses Mark 3™ power end design, which conforms to ASME B73.1 design standards, and is engineered to maximise performance and reliability
Low-Cost, Long-Term Solution To Corrosive Services
With corrosion resistance superior to many more expensive, highly alloyed metals and with costs closer to that of ductile iron, the PolyChem GRP has proven to be the low-cost, long-term solution in acidic and chloride-rich applications.
ASME B73.5M
Made of premium Derakane® vinyl ester resin reinforced with randomly oriented glass fibers, the GRP pump is designed to ASME B73.5M standards for chemical process pumps.
Compression Molded
GRP wet-end components are compression molded at high temperatures and pressures to evenly distribute reinforcing fibers. This results in Smooth hydraulic passages; High efficiencies; Lower operating costs; High structural strength.
Available Options
- Sealing options
- Open impeller option
- Baseplates
- ClearGuard and
- DurcoShield pump guards
- Spare parts
- 16 standard pump sizes
- Horizontal, end-suction and vertical, non-metallic configurations
Key Specifications
- Flows to 2050 m3/h (9000 gpm)
- Heads to 150 m (500 ft)
- Pressures to 17 bar (250 psi)
Self-priming — horizontal, end suction, top discharge
- Flows to 115 m3/h
- Heads to 115 m
VGRP — vertical, non-metallic sump
- Flows to 565 m3/h
- Heads to 110 m
- Pressures to 17 bar
Principle of Operation
In Durco PolyChem centrifugal pumps, fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery. As the impeller rotates, it imparts kinetic energy onto the fluid. The impeller vanes have channels with an increasing flow path area. As the flow path area expands, the passing fluid’s velocity decreases and the pressure increases. The fluid then falls to the volute. Due to the unique shape of the volute casing, the fluid undergoes a further velocity decrease and pressure increase. This causes the liquid to be discharged through the discharge port.
Applications
- Pulp & Paper
- Mining
- Steel & Primary Metals
- Corn Wet Milling & Ethanol
- Other Industries
- Organic & Inorganic
- Chemicals
- Specialty Chemicals
- Biofuels
- Petrochemicals
- Water Management
- Wastewater
- Conventional Steam
- Combined Cycle
- Biomass & MSW
Chemical Pump - Durco PolyChem S-Series Non-Metallic
The PolyChem S-Series chemical process pumps are powerful workhorses suitable for handling highly corrosive fluids. These non-metallic centrifugal pumps are lined with a flexible fluoropolymer, resulting in superior temperature tolerance and corrosion resistance.
The S Series is designed according to the dimensional standards of ASME B73.1, ISO 2858/5199, and JIS drilling, making it adaptable to many different applications.
Features & Benefits
- Rugged cast iron metal armour that conforms to ASTM A395 and offers durability not found in conventional plastic pumps
- Enclosed impeller provides balanced hydraulic loads and extends bearing life
- Self-flushing, self-venting, self-draining Advanced FM SealSentry™ Design Technology
- Seal chamber with flow modifiers redirect solids and slurry away from the seal
- External micrometre impeller adjustment allows for quick and accurate impeller setting
- Silicon carbide shaft sleeve mitigates corrosion and wear
Sealing Options
PolyChem S-Series pumps offer the advantage of innovative and readily available seal selections. Shown here are standard and recommended seal arrangements.
Advanced FM SEALSENTRY
Design Technology Only Flowserve offers a non-metallic pump with the advantages of an oversized seal chamber with flow modifiers.
Fluoropolymer PFA Lined
Wet End is globally preferred for its superior corrosion resistance and temperature allowance.
Available Options
- Sealing options
- Open impeller option
- Baseplates
- ClearGuard and DurcoShield pump guards
- Spare parts
- 10 pump sizes
Key Specifications
- Flows to 7000 LPM or 420 m3/h
- Heads to 145 m
- Pressures to 17 bar
Principle of Operation
In Durco PolyChem centrifugal pumps, fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery. As the impeller rotates, it imparts kinetic energy onto the fluid. The impeller vanes have channels with an increasing flow path area. As the flow path area expands, the passing fluid’s velocity decreases and the pressure increases. The fluid then falls to the volute. Due to the unique shape of the volute casing, the fluid undergoes a further velocity decrease and pressure increase. This causes the liquid to be discharged through the discharge port.
Applications
- Steel & Primary Metals
- Organic & Inorganic chemicals
- Specialty chemicals
- Biofuels
- Pharmaceutical
- Petrochemicals
- Water Management
- Wastewater
Chemical Pump - Durco Guardian Magnetic Drive
Durco Guardian horizontal magnetic drive pumps offer simple, reliable, and leak-free performance in demanding transfer applications and emission-free services.
This chemical pump complies with ASME (ANSI) B73.1-2001 dimensional standards, ASME (ANSI) B73.3-2003 sealless pump standards and HI 5.1-5.6 1992 standards. Guardian pumps use similar casing and reverse vane impeller as Durco Mark 3 ASME (ANSI) standard pumps, making it easy to convert from sealed to sealless configurations.
Features & Benefits
- Reverse vane impeller ensures constant bearing lubrication and lowest average NPSHR
- Hastelloy ® C-276 Containment Shell with excellent corrosion resistance
- Samarium Cobalt Rare Earth Magnets eliminate slippage
- Rugged silicon carbide bushings and journals ensure longer service life
- High-temperature capabilities of up to 290 C
- Optimised lubrication flow paths for maximized cooling of bushings and journals
High-temperature Design
The Guardian is capable of handling service temperatures to 290°C (550°F). Stationary silicon carbide bushings are cartridge mounted using tolerance rings to compensate for thermal expansion. O-rings protect tolerance rings from corrosion. Cartridges are pre-assembled at the factory and slip-fit into the bearing holder.
Materials of Construction
The Guardian is available in a wide range of materials to suit application needs. The accompanying chart lists the most common materials of construction.
Superior Cooling
Features a highly engineered internal lubrication path designed to deliver superior cooling and efficient pump performance. By introducing the coolest possible fluid to the bushings and journals, the Guardian achieves optimum lubrication, cooling and performance.
Available Options
- External flush plan
- Instrumentation options
- Material options
- Close-coupled and self-priming configurations
- Labyrinth oil seals
- Pump power monitor
- Spare parts
Key Specifications
- Flows to 375 m3/h
- Heads to 215 m
- Pressures to 24 bar
Principle of Operation
In Durco Guardian mag drive pumps, fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery. As the impeller rotates, it imparts kinetic energy onto the fluid. The impeller vanes have channels with an increasing flow path area. As the flow path area expands, the passing fluid’s velocity decreases and the pressure increases. The fluid then falls to the volute. Due to the unique shape of the volute casing, the fluid undergoes a further velocity decrease and pressure increase. This causes the liquid to be discharged through the discharge port.
Applications
- Acid transfer
- Aquariums
- Chlor-alkali
- Corrosive services
- Difficult-to-seal liquids
- Flammable liquids
- Organic chemicals
- Polymers
- Solvents
- Toxic services
- Ultrapure liquids
- Valuable liquids
- Water treatment