CFM series with shaft seal
The CFM series in block design with ANSI/ASME B73.1 inlet and outlet flanges guarantees a strong and robust construction.
Material combinations
The pumps are developed based on many years of experience withabrasivemedia. The great flexibility in robust material combinations makes Affetti pumps the obvious choice when high demands are required. Typical examples of material combinations:
- Fiberglass FRP-VES vinyl ester resin: Standard applications
- Fiberglass FRP-VEA vinyl ester resin: Applications withabrasivemedia
- Fiberglass FRP-VEC vinyl ester resin: Applications withbleaching agents
- Fiberglass FRP-VEF vinyl ester resin: Applications with fluorides
- Fiberglass FRP-EPX epoxy resin: Applications with strong chemicals and solvents
RTM molding
The fiberglass components in CFG and CFM pumps are producedusing RESIN TRANSFER MOULDING with fiberglass reinforced vinyl ester.
Accessories
• Drain hole
• Service drain pan
• Pressurized tank for thermo siphon system
• Self-priming tank
• Dry run protection
Technical design and advantages
- Pump casing in solid FRP with large thickness ensures optimal mechanical strength and chemical resistance.
- Semi-open self-balancing impeller; with metal core for extra strength.
- Shaft sleeve in FRP or PE-UHMW for media unaffected shaft.
- Standard high-end mechanical shaft seal
- Balanced shaft in 42CrMo4 carbon steel (special alloys on request), oversized to absorb torque and radial forces.
- Motor adapter in corrosion-resistant cast iron. Designed so that heat from the pump is not transferred to the motor.
- Baseplate in electro-welded S235JR-EN1025 carbon steel coated with epoxy primer and polyurethane primer.
Durable scooters
Durable impellers
A fastening system consisting of an impeller nut with a lock nut ensures that the impeller never comes loose, for example, during start-up reverse.
Shaft bushing separated from impeller
The shaft bushing (C) is separated from the impeller (B), allowing for replacement without changing the impeller, thereby reducing spare part costs. The rubber ring (B) helps keep the bushing in place.
Mechanical Shaft Seals
Elastomer bellows seals
Mechanical shaft seals for mildly aggressive, clean, and non-heat-sensitive 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 media 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).
Seals with spring retainer in metal
Mechanical shaft seal for moderately aggressive, clean, and non-extremely hot media. Static ring in Al2O3 and rotating ring in carbon-graphite, spring retainer in SS316, O-rings in EPDM or FPM, and gaskets in PTFE. Available as an external type (B8E) and double mechanical type (B8EDF).
Seals with Rubber O-rings
Mechanical shaft seal for moderately aggressive, clean, and non-extremely hot fluids. Static and rotating rings in two different combinations (SiC-SiC, carbon-graphite-SiC), spring and holder 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 CFM from Lobe
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