CFV-N SERIES
The Vitrum series is designed for pumping aggressive and abrasive media. All media-wetted parts are made of glass fiber reinforced material to withstand wear and high temperatures between -45°C and +120°C.The vertically mounted centrifugal pumps are easy to handle (low weight), strong, and compact. Large thickness ensures maximum strength and long life.
Material Combinations
The CFV-N series is built with materials selected based on years of experience in pumping aggressive and abrasive media. The flexibility in material selection is a hallmark of Affetti pumps and ensures a high level of quality. The pump shaft is connected to the motor with a flexible coupling with internal ball bearings and is guided by PTFE CG and Al2O3 bushings. (Alternatively, SIC/SIC on request)
- Glass fiber resin FRP-VES vinyl ester resin: Standard applications
- Glass fiber resin FRP-VEA vinyl ester resin: Abrasive applications
- Glass fiber resin FRP-VEC vinyl ester resin: Applications with bleaches
- Glass fiber resin FRP-VEF vinyl ester resin: Applications with fluorides
- Fiberglass resin FRP-EPX epoxy resin: Applications with strong chemicals
Accessories
- Additional motor cover against water
- Filter on suction side
- Extension tube on suction side
RTM Molding
The glass fiber components for CFV-N pumps are produced by RTM (RESIN TRANSFER MOULDING) usingvinyl ester, reinforced with long glass fibers.
Technical Construction
- FRP pump casing with substantial thickness to ensure maximum mechanical strength.
- Partially open impeller with balancing vanes on the back, reinforced with a metal core.
- Static guide bushing in PTFE CG (SiC on request).
- Rotating guide bushing in Al2O3 (SiC on request).
- Discharge pipe in thermoplastic.
- Column made of fiber-reinforced thermoplastic material.
- Balanced shaft in SS316 stainless steel or 42CrMo4 carbon steel coated with a thermoplastic material. Axial adjustment system for tolerance adjustment to maintain maximum efficiency.
- Extra thick mounting plate in PP, reinforced with steel.
- Integrating flange in cast iron with bearings and elastic coupling. Separates the motor from the rest of the pump.
- Elastic coupling to absorb axial inaccuracies. Enables motor servicing without moving the pump.
- Steel bracket with two ball bearings that guide the shaft.
- Three-phase asynchronous electric motor according to IEC (NEMA on request).
Mechanical Shaft Seals
Elastomer bellows seals
Mechanical shaft seals for slightly aggressive, clean, and non-particularly hot fluids. Static and rotating rings in SiC, springs and holder in SS316 not in contact with the fluid, elastomers in EPDM or FPM. Available as external type (B6E-B6EC), internal (B6I - B6IC - B6IH), or double mechanical type (B6EDF - B6EDFC).
PTFE bellows seals
Mechanical shaft seals for highly aggressive fluids and high temperatures. Static and rotating rings in three different material combinations (SiC-SiC, SiC-Al2O3, Al2O3-PTFE-C), PTFE bellows, springs and holder in SS316 (non-media contacting). Available as external type (JRS - JRS1 - JRA) or double mechanical type (JR2S - JR2S1 - JT2P - JR2A).
Sealing with O-ring in elastomer
Mechanical shaft seal for moderately aggressive, clean, and non-extremely hot media. Static and rotating rings in two different combinations (SiC-SiC, Carbon-graphite-SiC), spring and retainer in Hastelloy C276, O-ring in EPDM or FPM. Available as an internal type (UMG-UMS) or double mechanical type (UM2G-UM2S).
Find out more about Chemical Pumps and CFV-N from Lobe
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