Process pumps CPT

Summary

Product Identification

Sulzer CPT ANSI Process Pumps are designed for process applications. Manufacturing processes are ISO 9001:2000 approved.

Operating Limits

• Shaft deflection: .002”
• Bearing life: Exceeds all ANSI requirements.
• Flanges: Class 150 RF Standard, optional Class 300 RF, meeting ASME/ANSI Standards.
• Polymer Composite baseplate guaranteed surface flatness: 0.015” or 0.005” end-to-end.
• PIP baseplate raised mounting pads machined to 0.002 in/ft surface flatness.
• Heat treatment for A-890 Grade 3A: Solution annealed by heating to and holding at 1950°F minimum for a prescribed time, followed by a rapid water quench.

Feed Water

• Handles solids and fibrous materials.

Mechanical / Hydraulic

General Features

• Centerline discharge
• Back pull-out design allows maintenance of the rotating assembly without disturbing piping.
• Provides self-venting for air elimination.
• Equalizes distribution of pipe stress through integral feet.
• Heavywalled casing.
• Computer generated hydraulics.
• Corrosion allowance for extended wear.
• Large diameter shaft.
• Solid shaft or hook sleeve design available.
• Semi-open impeller with back pump-out vanes for control of stuffing box pressure and axial thrust.
• Investment casting guarantees smooth surfaces.
• Low Flow (CPT-LF) option: Specifically designed to eliminate hydraulic and mechanical issues normally experienced at low flow/high head conditions, utilizing a radial vane impeller and concentric casing design.
• Teflon® impeller o-ring.
• Precision cast parts utilizing the latest casting techniques.

Bearing Unit

• Heavy-duty bearing unit designed for long life and tough applications, built for high load applications (e.g., operation at reduced flows, pumping high specific gravity liquids, overhung belt drives).
• Inboard cylindrical roller bearings for maximum radial load carrying capabilities.
• Angular contact thrust bearing (duplex design) locked into position, carries radial and axial loads extending service life.
• Inpro VBX/labyrinth bearing isolators provide inboard and outboard bearing protection, isolating bearings from environmental contamination, with multi-port for proper drainage (Bronze standard, non-metallic available).
• Splash lubrication directs oil to bearings for efficient cooling and improved lubrication.
• Large capacity oil sump with extra-large, multiple oil return slots for improved oil circulation and cooling.
• Oversized sight glass located on each side of the bearing unit.
• Rigid bearing housing support foot with fully machined mounting surfaces assures improved mounting stability and accurate alignment.
• Optional magnetic oil drain plugs, bearing unit cooling, and constant level oiler available.
• Grease lubrication available as an option.
• Impeller clearance adjustment: Quick and accurate adjustments without the use of a feeler gauge or removal of the pump; assures concentricity and bearing alignment throughout the impeller’s adjustable range; no snap ring required to hold bearing.

Shaft Sealing

• A variety of rear covers/stuffing box designs are available to meet process requirements.
• Options include: Packing, Mechanical seal (Large bore, Taper bore with cast-in ribs for flow enhancement), Dynamic seal.
• Dynamic seal uses an expeller to move liquid back into the volute casing and away from the stuffing box when the pump is running. When the pump stops, liquid flows back into the stuffing box, forcing closed an elastomeric static seal to prevent leakage. No outside flush required.

Flanges

• Meet ASME/ANSI Standards.
• Class 150 RF Standard, optional Class 300 RF.

Hydraulic Performance

• Hydraulic coverage charts illustrate best efficiency point and capacity ranges for 3600 rpm and 1800 rpm.
• Approximate capacity range (from graph axes):
  • 3600 rpm: 16 to 850 USgpm
  • 1800 rpm: 16 to 7000 USgpm
• Approximate head H (from graph axes):
  • 3600 rpm: 30 to 2500 ft
  • 1800 rpm: 32 to 330 ft
• See the official PDF for exact tabulated values and specific pump curves.

Dimensions

• CPT pump dimensions and CPT base dimensions are provided in tables.
• Pump sizes are denoted by Group and Pump Size (e.g., 1.5x1x6, 3x1.5x6, 8x6x13, 10x8x17).
• Base dimensions include Base, Max Motor Frame, and various dimensional parameters (HA, HB, HE, HF, ØHH, HL, HG max, HD max).
• Note that CPT 11-3 is not part of ANSI specification and may have different dimensions.
• See the official PDF for exact tabulated values.

Baseplate Options

• Sulzer produces rigid baseplate designs that resist distortion, minimizing pump/motor misalignment. They require minimal maintenance and are corrosion resistant for severe environments.
• Standard baseplate (Style 1): Formed steel, meets ANSI specifications for pump/motor mounting. Features a single grout hole and epoxy paint. Optional stainless steel catch basin or all stainless steel construction is available.
• Non-metallic baseplate: Polymer Composite design with a standard guaranteed surface flatness of 0.015” or 0.005” end-to-end, carbon or SS inserts, leveling holes, and machined riser blocks.
• Drip-lip baseplate (Style 3): Features welded end caps and optional center I-Beam support, including a sloped drainage channel to a welded drain connection. Options include motor adjustment bolts, additional grout vent holes, and all stainless steel construction.
• PIP baseplate: Designed to current PIP requirements, standard with a grout hole, raised mounting pads machined to 0.002 in/ft surface flatness, motor alignment bolts, additional welded supports, sloped full drain rim, lifting lugs, and continuous welded steel construction. Options include leveling screws, stilt and spring mounting, and all stainless steel construction.

Materials of Construction

• Standard wet-end components are cast in duplex stainless steel (ASTM A-890 Grade 3A) unless specified otherwise.
• A full range of materials is available, from Ductile Iron and Duplex stainless steel to 654 SMO™.
• ASTM A-890 Grade 3A (Duplex Cast Steel):
  • This ferritic-austenitic duplex cast steel has high molybdenum and nitrogen content.
  • Offers corrosion resistance superior to conventional cast 316SS (CF-8M) and equal to or better than 317SS (CG-8M).
  • Provides excellent abrasion resistance (230 BHN) that, when used in mildly abrasive services, may last 30% to 40% longer than 316SS.
  • Features clearly superior mechanical properties over austenitic alloys and is comparable to most duplex alloys including CD4-MCu and SS2205.
  • Readily weldable provided a matching weld filler is used.
• Pitting Resistance Equivalence (PRE = Cr% + 3.3 Mo% + 16 x N%):*
  • A890-3A: 35.6
  • A743 CF-8M: 27.5
  • CD4MCu: 35.30
  • AISI329: 34.08
  • A743 CN-7M: 30.0
  • A743 CG-8M: 35.10
• Mechanical and chemical properties for various materials (e.g., Cast iron, CD6MN, 2205, 5A, CD4MCuN, Ductile iron, 329SS, 316SS, 317SS, Alloy 20, 654 SMO*) are detailed in tables. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror