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GQN

GQN

Product catalog summary

Construction
Single-impeller submersible pumps with a two-passage channel impeller and a vertical threaded delivery port (G 2”). They feature a double mechanical shaft seal with an interposed oil chamber to protect against dry-running.

Applications
These pumps are suitable for domestic or industrial wastewater, dirty water with solids up to 50 mm grain size, and liquids compatible with the pump materials. They can be used for draining rooms, emptying tanks, extracting water from ponds, streams, or pits, and collecting rainwater.

Operating Conditions
The pumps operate with liquid temperatures up to 35°C, pH values between 6-11, a maximum immersion depth of 5 m, and a minimum immersion depth of 275 mm. They are designed for continuous duty with a submerged motor.

Motor Specifications
The pumps are equipped with a 2-pole induction motor, 50 Hz, with an approximate speed of 2900 rpm. The GQN model is available in three-phase 230 V ± 10% and 400 V ± 10%, while the GQNM model is single-phase 230 V ± 10% with a float switch and thermal protector. The motor includes an incorporated capacitor and is constructed with insulation class F and protection IP X8 for continuous immersion.

Materials
The pump casing is made of cast iron GJL 200 EN 1561, while the impeller, motor jacket, and jacket cover are made of chrome-nickel steel 1.4301 EN 10088 (AISI 304). The handle is polypropylene with a frame in AISI 304, and the shaft is also chrome-nickel steel. The mechanical seal is made of ceramic alumina/carbon/NBR, and the seal lubrication oil is suitable for food/pharmaceutical machinery.

Performance and Dimensions
The pumps have a rated motor power output with kinematic viscosity up to 20 mm²/sec and density ρ = 1000 kg/m³. They are available in various models with different dimensions and weights, suitable for specific applications.

Features
The pumps offer easy adjustment of the float switch, a handle in polypropylene with a stainless steel frame, and a shaft in chrome-nickel stainless steel. They have a double shaft seal with an oil chamber for additional protection against dry operation. The pump casing and impeller are treated with epoxy cataphoresis for rust protection. A relief valve ensures proper pump priming after long standstill periods.

Catalog excerpts

Submersible Sewage and Drainage Pumps calpeda Materials Construction Single-impeller submersible pumps, (with two-passage) with channels impeller with vertical threaded delivery port (G 2”). Double mechanical shaft seal with interposed oil chamber, to protect against dry-running. Applications For domestic or industrial waste water, dirty water with solids up to 50 mm grain size, for liquids which are compatible with the pump materials. For draining rooms or or emptying tanks. Extraction of water from ponds, streams or pits and for rainwater collection. Operating conditions Liquid temperature up to 35° C. pH value: 6-11. Maximum immersion depth: 5 m. Minimum immersion depth: 275 mm. Continuous duty (with submerged motor). Motor 2-pole induction motor, 50 Hz (n = 2900 rpm). GQN : three-phase 230 V ± 10%; three-phase 400 V ± 10%;. Cable: H07RN-F, 4G1 mm2, length 10 m, without plug. GQNM: single-phase 230 V ± 10%, with float switch and thermal protector. Incorporated capacitor. Cable: H07RN-F, 3G1 mm2, length 10 m, with plug CEI-UNEL 47166. Insulation class F. Protection IP X8 (for continuous immersion) Triple impregnation humidity-proof dry winding. Constructed in accordance with: EN 60034-1; EN 60335-1, EN 60335-2-41. Other features on request - Other voltages. - Frequency 60 Hz (as per 60 Hz data sheet). - Other mechanical seal. - Cable length 20 m. - Motor suitable for operation with frequency converter. - Three-phase pumps with incorporated float switch.

Open the catalog to page 1

Submersible Sewage and Drainage Pumps calpeda Performance n a 2900 rpm 3~ 230V 400V Pi Max. power input. P2 Rated motor power output. Density p = 1000 kg/m3. Kinematic viscosity v = max 20 mm2/sec. Dimensions and weights type 1) With cable length: 10 m

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Submersible Sewage and Drainage Pumps Installation examples

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Submersible Sewage and Drainage Pumps patenteD Cable length 10 m, pump single-phase with plug Handle in polypropylene, with frame in stainless steel. easy inspection of the capacitor area. easy adjustment of the float switch: to allow the adjustement of start/stop pump levels. Ring against accidental extraction of the cable. the double shaft seal with oil chamber separates the motor from the water and provides further protection against accidental operation when dry. Relief valve: the pump is fitted to a relief valve for air release around the impeller granting a proper pump priming also after...

Open the catalog to page 4