GQG

Summary

Product Identification

Calpeda GQG and GQGM series submersible pumps with high power grinder.

• GQG: Three-phase models.
• GQGM: Single-phase models, includes float switch, thermal protection, and control box with starting capacitors.
• Patented design.

Operating Limits

• Liquid temperature: Up to 35° C
• Maximum immersion depth: 5 m
• Minimum immersion depth: 300 mm
• Duty: Continuous (with submerged motor)
• Solid passage: Ø 6 mm
• Kinematic viscosity: Max 20 mm²/sec
• Density: ρ = 1000 kg/m³

Feed Water

Suitable for pumping waste water containing long filamentous, paper, textile materials, and organics. Particularly suitable for domestic, residential, and industrial installations.

Electrical

• Motor: 2-pole induction motor, 50 Hz (n ≈ 2900 rpm)
• Insulation class: F
• Protection: IP X8 (for continuous immersion)
• Winding: Triple impregnation humidity-proof dry winding
• Cable: H07RN8-F, 4G1 mm² (4G1,5 mm² for GMGM 6-25), length 10 m
• Voltage Options:
  • GQG (three-phase): 230 V ± 10%; 400 V ± 10%
  • GQGM (single-phase): 230 V ± 10%

Performance Data: Detailed performance curves (H-Q) and electrical data (P1, P2, A, Capacitor values) for specific models (GQG/GQGM 6-18, 6-21, 6-25) are available in the official PDF datasheet.

Mechanical / Hydraulic

• Construction: Submersible pumps with high power grinder.
• Delivery Port: Horizontal flanged and threaded (DN 32 PN 6 - G 1 1/2).
• Shaft Seal: Double mechanical shaft seal with interposed oil chamber, protecting against dry-running. The oil chamber contains oil for food/pharmaceutical machinery.
• Connections:
  • Flange DN 32 PN 6 EN 1092-2
  • G 1 1/2 ISO 228
  • For duck foot coupling SA-G2
• Cutting System: Made of HRC 60 hardness AISI 440C stainless steel.
• Priming: Fitted with a relief valve for air release around the impeller, ensuring proper pump priming.

Materials:

• Pump casing, Impeller, Casing cover: Cast iron GJL 200 EN 1561
• Rotating cutting blade, Fixed cutting blade: Nickel-Molybdenum steel 1.4125 EN 10088 (AISI 440C)
• Motor jacket, Jacket cover: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Handle: Polypropylene (with frame in AISI 304)
• Shaft: Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
• Mechanical seal (upper): Ceramic alumina/Carbon/NBR
• Seal lubrication oil: Oil for food/pharmaceutical machinery
• Coatings: Pump casing, casing cover, and impeller feature epoxy cataphoresis treatment joined to external paint for enhanced rust protection.

Dimensions and Weights: Detailed dimensions and weights for GQG(M) 6-18, 6-21, and 6-25 models are provided in the official PDF datasheet.

Other Features on Request

• Other voltages
• Frequency 60 Hz
• Other mechanical seal
• Cable length 20 m
• Vertical magnetic float switch
• Three-phase pumps with incorporated float switch

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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 official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror