7 SPLIT CASE PUMPS Split Case zTwo sets of bearings to support shaft zAllows Access to both seals without moving motor or disturbing piping zUp to 1,500 HP Horizontal Split Case Vertical Split Case VERTICAL TURBINES Vertical Lineshaft Turbine Designed to Lift Liquid from Sump / Tank Motor and Impeller are separated Impellers “Push” better than “Pull”


    This manual covers the installation, operation and maintenance of Patterson Pump horizontal split case pumps. The pump is a centrifugal, single stage, double suction type. When properly installed and when given reasonable care and maintenance, centrifugal pumps should …


    MULTISTAGE SPLIT CASE PUMPS Horizontal Pump Features A. Split Case Design simplifies disassembly. The suction and discharge piping or alignment is not disturbed. Simply remove the upper casing for service or inspection. Cast lifting lugs are provided. Computer-machined major components with 360 degree registered fits assure concentric fit.

  • Centrifugal Pump Piping Design Layout

    The clearance between any structure / steel work and the pump discharge line shall be 0.75m minimum. For small pumps upto 18 KW, clearance between pumps should be 0.9m minimum. A space of 2 – 2.5 m should be provided for working aisle. A typical arrangement of pumps is illustrated in …

  • Centrifugal Pumps: Basic Concepts of Operation ...

    split casingimplies two or more parts are fastened together. When the casing parts are divided by horizontal plane, the casing is described as horizontally split or axially split casing. When the split is in a vertical plane perpendicular to the rotation axis, the casing is described as vertically split or radially split casing.


    DOUBLE SUCTION HORIZONTAL SPLIT CASE PUMP HSA Series Pumps feature heavy-duty, long lasting quality for a variety of water circulation applications. Proven performance and longevity, balanced double-entry impeller design, and modular componenets are just a few of the HSA Pumps’ attributes. WWW.HYDROFLOPUMPS.COM

  • End-Suction pump vs Horizontal Split Case - Fire ...

    Horizontal Split Case pump A centrifugal pump characterized by a housing that is split parallel to the shaft. usually of "Impeller Between Bearing" type in which the impeller is mounted on a shaft with the bearings at both ends. Horizontal split case pumps are available as separately coupled single stage or …

  • Consulting - Specifying Engineer | NFPA 20: Fire pump design

    Nov 21, 2019· Fire p ump p ressures . The total head of a fire pump is the energy imparted to the liquid as it passes through the pump, usually expressed in psi. For fire pumps such as horizontal split-case and vertical in-line centrifugal pumps that are required to operate under net positive suction head, the total head of a fire pump is calculated by adding the suction head (city pressure) to the ...

  • Resource Library Cover | Peerless Pump

    Select an asset type, market, or product group below to explore our available resources.

  • Hydraulic Considerations in Pumping System Design

    • Treated effluent pumps Horizontal Split Case Characteristics • Wide flow range • Heads to ~500 ft. for single stage, higher for two-stage • High efficiency (85-95%) • Ease of maintenance • Flat curve Horizontal Vertical • Horizontal motor • Vertical motor • Single or two stage • Dual diesel / electric drive Configurations ...

  • HORIZONTAL Split-Case Type PDN-PD | Gruppo Aturia – English

    HORIZONTAL Split-Case Type PDN-PD. FM Approved horizontal split-case type centrifugal fire pumps are relatively simple to operate and repair. These pumps have a two-part casing divided in a horizontal plane through the shaft center line. They are well suited to fire protection service where a water supply is obtainable under a positive head.

  • Horizontal Split Case Pump | Re-circulating Water System ...

    Horizontal Split Case pumps are used in handling water with slight impurities, petroleum refineries, conditioning and refrigeration system etc. ... Endless hard but smart work has helped us gain this position. Today we are known for our quality and excellence. We are now looking for some enthusiastic and talented candidates for our company.

  • Centrifugal pump - Wikipedia

    Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. They are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller ...

  • Pros & Cons of Horizontal Split-Case Pumps | Pumps & Systems

    It all comes down to design. Between-the-bearings: Split-case pumps are what is referred to as a “between-the-bearings” pump. This means that split-case pumps mount the impeller on a shaft that is supported by bearings on both sides of the impeller.

  • Back to Basics Pump Sizing - AIChE

    In a positive-displacement (PD) pump, a discrete amount of fluid is trapped, forced through the pump, and discharged. A gear pump is an example of a PD pump (Figure 2). This pumping principle produces a pulsating flow, rather than a smooth flow. Its output flow tends to vary little with respect to the pressure at the pump outlet, because the moving

  • how does a horizontal split case pump work

    A horizontal split case pump is a unique type of centrifugal pump whose casing is divided into two distinct chambers, which is different from inline or end suction pumps that are assembled with the suction nozzle, discharge nozzle, and casing in one chamber.

  • Split Case Pumps - Horizontally Mounted

    The pump casing shall be of extra heavy cast iron, with minimum tensile strength of 30,000 psi. High pressure cases shall be ductile iron with minimum tensile strength of 60,000 psi, split parallel to the shaft. Bearing housing supports, suction and discharge fl anges shall be cast, bored and machined integrally with the lower casing half.

  • How Horizontal Multistage Centrifugal Pump Works

    How Horizontal Multistage Centrifugal Pump Works. Multistage Centrifugal Pump. All centrifugal pumps work by creating a centrifugal force. This force moves the liquid through the pump and increases the liquid’s pressure. In applications where large increases in pressure are needed multi-stage centrifugal pumps are often used.

  • Horizontal Split Case Pumps - National Pump Supply

    PARTS LIST CP-515C-PL SERIES HSC3 PUMPS MECHANICAL SEAL OVER SHAFT PARTS LIST CP-515A-PL MECHANICAL SEAL OVER SHAFT SERIES HSC3 PUMPS 4 2-001-0 Casing 1 Cast Iron 52-116-916-501 52-116-917-501 52-116-917-511 2-071-1 Jacking Screw 2 Steel CP-617-017-548 2-123-5 Casing Gasket-Suct. 1 Vellumoid 52-117-348-005 52-117-415-005

  • Pipeline Transportation Pumps - Flowserve

    vertical canned and horizontal single- and multistage split case pumps. In tar sands mining, Flowserve high-pressure, hard metal slurry pumps feed a mixture of air, water and bitumen down a pipeline from the sand extraction plant at the mine to the base plant for further extraction and refining. From there, axially split

  • Series SC-II Horizontal Split Case Pumps - Federal Pump

    Single Stage Split Case Pumps 7A.0 Furnish and install as outlined in the plans and described in these specifications Federal Pump Series SC-II Horizontal Split Case single stage double suction centrifugal pump designed to deliver the scheduled flow rate (GPM) at the scheduled total dynamic head (TDH) in …

  • Fluid Engineering Pvt. Ltd - World of Pumps

    7. Workshop 2: Pump - Hydraulic Principles & Performance Characteristics – solving a set of ten multiple choice questions. ... Two stage split case pumps are available ... internal and external cross-overs for capacities up to 1200m: 3 / hr and heads up to 400m. Single stage double volute split case pumps are offered both in horizontal and ...


    Double Suction Single Impeller: In general, a horizontal split case pump is identified as, and referred to, this type of construction with bulging suction chambers on both sides of the pump casing and in-line Suction and Discharge nozzles. The pumps are primarily designed to handle large flow rates for low to high head applications.

  • Choosing the Right Fire Pump | Steven Brown & Associates

    Oct 29, 2015· Horizontal Split Case . Horizontal Split Case (HSC) pumps are given their name due to the “split”” design of the casing, where the casing cover can be lifted off of the pump to expose the internal components. These components include the impeller, bearings, pump shaft, and so on.

  • Introduction to Pumping Stations for Water Supply Systems

    the centrifugal horizontal or vertical split case pump designed for water-works service. If the pump station and intake structure are to be located within a surface or underground reservoir, vertical turbine pumps with the column extending down into the reservoir or its suction well will be a logical choice.

  • Centrifugal Pumps: Basic Concepts of Operation ...

    Working Mechanism of a Centrifugal Pump A centrifugal pump is one of the simplest pieces of equipment in any process ... casing parts are divided by horizontal plane, the casing is described as ... split case pump. Centrifugal Pumps: Basics Concepts of Operation, Maintenance, and …

  • Centrifiugal Pumps Overview - mi-wea.org

    Axial Split Case (Horizontal) Radial Split Case (Vertical) Axial Split Case ... a pump to do a specified amount of work. BHP = Q x H x Sp.Gr 3960 x Efficiency. 24 Centrifugal pump Curves- Characteristics Continued….. • Efficiencies –Efficiency of a pump can be calculated by:

  • Horizontal Split Case Pumps and Their Applications ...

    Apr 03, 2018· A horizontal split case pump is a unique type of centrifugal pump whose casing is divided into two distinct chambers, which is different from inline or end suction pumps that are assembled with the suction nozzle, discharge nozzle, and casing in one chamber.

  • Maintenance Guidelines – Centrifugal Pump Fits and ...

    Horizontal axial split case 1. Stationary parts fit case metal to metal to 0.004" (0.01mm) clearance.. 2. Measure and inspect case fits for wear and corrosion. Repair by building up and re-machining. 3. All other repairs same as vertical radial split case pumps except, case rings to …

  • Practical Considerations in Pump Suction Arrangements

    Figure 6 is a plan view of a horizontal split case pump with several suction arrangement poor practices. They are: (1) A short-radius 90º elbow in the horizontal plane; (2) followed by a sudden contraction to accommodate the pump’s nozzle size; (3) both located less than 5D from the suction nozzle. In contrast,

  • 4600 Horizontal Split Case Pumps | Armstrong Fluid Technology

    The Armstrong 4600 horizontal split-case (HSC) double suction pumps are base mounted and engineered to substantially reduce cost over rival designs across installation, operation, and lifetime maintenance. High-efficiency NEMA-premium motors ensure low energy consumption and cost.