GQR

Summary

Product identification

The GQR series consists of single-impeller submersible drainage pumps with an open impeller. The product is patented.

• GQR: Features a vertical threaded delivery port (G 1 1/2).
• GQR 10 32: Features a horizontal flanged and threaded delivery port (DN 32, PN 6 - G 1 1/2).

Operating limits

• Liquid temperature: up to 35° C
• Maximum immersion depth: 5 m
• Minimum immersion depth: 205 mm
• Duty: Continuous (with submerged motor)
• Kinematic viscosity: max 20 mm²/sec
• Density: 1000 kg/m³

Feed water

• Suitable for clean water containing solids up to 10 mm grain size.
• Suction strainer allows passage of solids up to 10 mm.

Electrical

• Motor type: 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
• Standards: Constructed in accordance with EN 60034-1; EN 60335-1, EN 60335-2-41

GQR (Three-phase)

• Voltages: 230 V ± 10%; 400 V ± 10%
• Cable: H07RN-F, 4G1 mm², length 10 m, without plug

GQRM (Single-phase)

• Voltage: 230 V ± 10%
• Features: With float switch and thermal protector, incorporated capacitor
• Cable: H07RN-F, 3G1 mm², length 10 m, with plug CEI-UNEL 47166

Other features on request

• Other voltages
• Frequency 60 Hz (as per 60 Hz data sheet)
• Other mechanical seal
• Cable length 20 m
• Vertical magnetic float switch
• Motor suitable for operation with frequency converter
• Three-phase pumps with incorporated float switch

Mechanical / hydraulic

Construction

• Double mechanical shaft seal with interposed oil chamber, to protect against dry-running.
• Chamber with oil for food/pharmaceutical machinery.
• Pump casing with epoxy cataphoresis treatment joined to external paint for greater rust protection.
• Impeller with epoxy cataphoresis treatment for greater rust protection.
• Relief valve fitted for air release around the impeller, granting proper pump priming.
• Handle in polypropylene, with frame in stainless steel.
• Shaft in chrome-nickel stainless steel.
• Easy inspection of the capacitor area.
• Easy adjustment of the float switch to set start/stop pump levels.

Delivery Port

• GQR: G 1 1/2 vertical, upward delivery port for installation in small pits.
• GQR 10 32: Maximum flexibility of connection including Flange DN 32 PN 6 EN 1092-2 for duck foot coupling SA-G2”; G1 1/2 ISO 228.

Materials

• Pump casing: Cast iron GJL 200 EN 1561
• Impeller: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Strainer: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Motor jacket: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Jacket cover: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Casing cover: Polypropylene (with frame in AISI 304)
• Handle: Polypropylene (with frame in AISI 304)
• Shaft: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Mechanical seal:
  • Upper: Ceramic alumina/Carbon/NBR
  • Lower: (Material not specified in extract)
• Seal lubrication oil: Oil for food/pharmaceutical machinery

Performance, Dimensions, and Weights

See the official PDF for exact tabulated values.

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

Official datasheet (PDF)

Lenntech datasheet mirror