Split Case Pumps

  • LR Single Case Axially Split Pump
  • LNN Single Case Axially Split Pump
  • DVSH Single Case Axially Split Pump
  • LPN Single Case Axially Split Pumps
  • UZDL Single Case Axially Split Pump
  • HDX Single Case Radially Split Pump
LR Single Case Axially Split Pump
LNN Single Case Axially Split Pump
DVSH Single Case Axially Split Pump
LPN Single Case Axially Split Pumps
UZDL Single Case Axially Split Pump
HDX Single Case Radially Split Pump

LR

Axially Split Pumps

The LR family of pumps provides a broad range of hydraulic coverage and low total cost of ownership. With thousands of units installed over the years, these pumps provide reliable and efficient performance in applications ranging from water supply to circulation duties to petroleum distribution.

Industry Sectors

  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Other Industries
  • Petrochemicals
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Midstream Transportation
  • Downstream Processing
  • Conventional Steam

Operating Parameters

  • Flows to 2000 m3/h (8800 gpm)
  • Heads to 170 m (560 ft)
  • Pressures to 21 bar (300 psi)
  • Temperatures from -30°C (-20°F) to 150°C (300°F)

Features and Benefits

  • Split case design with lifting lugs simplifies maintenance by allowing access to the rotating element without disturbing the piping or driver
  • Low NPSH enclosed impellers provide high efficiency and optimum performance over a wide flow range
  • Most LR and LRV models feature double-suction impellers
  • The LLR incorporates back-to-back, single-suction impellers
  • Radial and thrust bearings are available with oil or grease lubrication
  • Designs include single row, deep groove ball bearings or duplex thrust ball bearings
  • Typical L10 bearing life is 100 000 hours
  • Heat-treated steel shaft limits deflection to 0.05 mm (0.002 in), prolonging seal life
  • Shaft sleeves are secured by external nuts and include O-rings to ensure reliable internal sealing
  • Mounting feet transmit pipe strain loads to the base and foundation, extending bearing life
  • Dowel bushing maintains concentricity between the bearing bracket and the casing
  • Multiple ease of maintenance features such as replaceable seal chamber

LNN

Axially Split Pumps

The LNN series of pumps is the outcome of many years of experience in the design and manufacture of axially split casing pumps. State-of-the-art pump design technology from Flowserve has resulted in superior pump designs which offer broad hydraulic coverage, quiet operation, low NPSH requirements, high operating efficiency and low total cost of ownership.

Industry Sectors

  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Other Industries
  • Petrochemicals
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Desalination
  • Midstream Transportation
  • Downstream Processing
  • Conventional Steam

Standards

  • Flowserve
  • ISO 13709 / API 610

Operating Parameters

  • Flows to 30,000 m3/h (132,000 gpm)
  • Heads to 300 m (985 ft)
  • Pressures to 40 bar (580 psi)
  • Temperatures from -30°C (-20°F) to 140°C (285°F)

Features and Benefits

  • Double volute design minimizes hydraulic radial forces in any condition down to the minimum flow, thereby reducing shaft deflection and increasing the service life of bearings, seals and wear rings
  • Separate 360° bearing housings provide superior bearing stability and shaft support while easing maintenance
  • Perfect shaft alignment is assured by a full register fit to the casing
  • Axially split casing with suction and discharge nozzles integrally cast in the lower casing half permits pump disassembly without disturbing the piping or driver
  • Upper casing half does not have to be removed to access bearings, packing, mechanical seals, sleeves or sleeve nuts
  • Nozzle flanges meet the dimensional requirements of ASME B16.1, B16.5 or ISO 7005 part 1 or 2
  • Flanges are available in sizes from Class 125 to Class 300 (ISO PN10 to PN63)

DVSH

Axially Split API Pumps

The DVSH is a between bearings, axially split, single stage pump designed for continuous service in heavy duty pipeline services. With over 100 distinct hydraulics, the DVSH provides unsurpassed coverage for high efficiency, reliable operation with thousands of units installed worldwide.

Industry Sectors

  • Mining
  • Other Industries
  • Basic (Organic & Inorganic)
  • Water
  • Water Management
  • Desalination
  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing
  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power (CSP)
  • Biomass and Municipal Solid Waste (MSW)

Standards

  • ISO 13709 / API 610
  • Hydraulic Institute

Operating Parameters

  • Flows to 12000 m3/h (52835 gpm)
  • Heads to 565 m (1854 ft)
  • Pressures to 150 bar (2175 psi)
  • Temperatures to 200°C (400°F)
  • Speeds to 6000 rpm

Features and Benefits

  • Double Volute, Axially Split Casing Design minimizes hydraulic radial forces in any condition down to the minimum flow
  • Suction and Discharge Nozzles are integrally cast in the lower casing half to permit pump disassembly without disturbing the piping
  • Near Centerline Mounting provides superior pump alignment and performance at elevated temperatures
  • Double Suction Impeller provides hydraulic axial balance and allows minimal NPSHr. ISO 21049/API 682 Seal Chambers ensure ample flow around the seal faces and accommodate numerous seal designs
  • Heavy-Duty Shaft Design ensures trouble-free operation below the first critical speed
  • Standard Renewable Casing and Impeller Wear Rings provide hydraulic stability and high operating efficiency

LPN

Axially Split API Pumps

The LPN is a between bearing, axially split, one-stage pump. With a double suction impeller and side-side nozzles, this medium-pressure pump is a natural solution for low NPSH applications, such as water and hydrocarbon transfer service.

Industry Sectors

  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing

Standards

  • ISO 13709 / API 610 BB1

Operating Parameters

  • Flows to 15000 m3/h (65000 gpm)
  • Heads to 250 m (820 ft)
  • Pressures to 50 bar (725 psi)
  • Temperatures -80°C (-110°F) to 204° (400°F)

Features and Benefits

  • High uptime made possible by double-suction impeller and double volute designs, which create optimal axial and radial thrust balance
  • Increased MTBR resulting from heavy-duty bearings and bearing lubrication system; multiple options available to suit application requirements
  • Superior performance at elevated temperatures with near-centerline mounting
  • Simplified maintenance enabled by the split-casing design, which permits the rotor, seals and bearings to be serviced without disturbing the piping
  • Emissions control with ISO 21049/API 682 seal chambers
  • Centerline
  • Nozzle loading capability beyond API 610, API 68

UZDL

Axially Split API Pumps

The UZDL is a between bearing, axially split, two-stage pump with a double suction, first-stage impeller. The UZDL is designed for water pipelines, transfer services, firefighting and high-pressure duties.

Industry Sectors

  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing

Standards

  • ISO 13709 / API 610 BB1

Operating Parameters

  • Flows to M3/H
  • Flows to 3000 m3/h (13209 gpm)
  • Heads to 685 m (2250 ft)
  • Pressures to 64 bar (910 psi)
  • Temperatures to 200°C (400°F)

Features and Benefits

  • Increased uptime made possible by double volute design that minimizes hydraulic radial loads, and virtually eliminates shaft deflection and vibration
  • Safety and environmental compliance with ISO 21049/API 682 seal chambers
  • Increased reliability provided by stiff shaft design, which ensures trouble-free operation below the first critical speed
  • Ease of maintenance due to suction and discharge nozzles that are integrally cast in lower casing half, permitting disassembly without disturbing piping
  • Centerline
  • Nozzle loading capability beyond API 610

HDX/HDX-TT

Between Bearing Radially Split One Stage

Industry Sectors

  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing
  • Concentrated Solar Power (CSP)

Standards

  • API 610 BB2

Operating Parameters

  • Flows to 4100 M3/H

Features and Benefits

  • Centerline
  • Nozzle loading capability beyond API 610
  • API 682 Seal Chamber

HED

The HED/HED-DS is a between bearing, radially split, two-stage, centerline mounted pump engineered for safe, reliable operation in heavy-duty process services and elevated temperatures.

Industry Sectors

  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing

Standards

  • ISO 13709 / API 610 BB2

Operating Parameters

  • Flows to 2000 m3/h (8800 gpm)
  • Heads to 650 m (2100 ft)
  • Pressures to 120 bar (1750 psi)
  • Temperatures to 450°C (842°F)

Features and Benefits

  • Extended reliability and life made possible by heavy-duty, single- or dual-volute casings with a staggered arrangement, which ensures radial balance
  • Application versatility provided by numerous options — including 50- or 60-cycle operation and top-top, side-top and side-side nozzle orientations — that permit the pump to be precisely configured for service and site requirements
  • Increased reliability provided by stiff shaft design, which ensures trouble-free operation below the first critical speed
  • Environmental regulatory compliance with ISO 21049/API 682 seal chambers
  • Centerline
  • Nozzle loading capability beyond API 610
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