GQN
Submersible sewage and drainage pumps.
- 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.
Description
Technical Specifications
Flow
6 / 48
mc / h
Head
1.4 / 16.3
m
Power
0.9 / 1.5
kW
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 emptying tanks
- Extraction of water from ponds, streams or pits and for rainwater collection
Operating conditions
- Maximum liquid temperature: 35 °C
- pH value: 6-11.
- Immersion depth: 5 m max
- Minimum immersion depth: 275 mm.
- Continuous duty (with submerged motor).
Features
- 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 adjustment 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 long standstill periods.
- Chamber with food/pharmaceutical machinery oil
- G 2 vertical, upward delivery port for installation in small pits, without the need for an elbow on the pump.
- Impeller with epoxy cataphoresis treatment for a greater protection against the rust.
- Shaft in chrome-nickel stainless steel.
- Channels impeller (two-passage). Construction is particularly suitable for liquids containing solids up to 50 mm grain size.
- Pump casing with epoxy cataphoresis treatment joined to the external paint for a greater protection against the rust.
Additional information
| Brands | Calpeda |
|---|---|
| Category Top Level | Building Services |
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- Suction capability up to 1 mm from the bottom.
Motor cooled by the pumped water passing between the motor jacket and the external jacket. - Double shaft seal with oil chamber.
- The pump is fitted with a suction non-return valve which, during operation, allows to manually move the pump to several points in the room and draw water up to 1 mm avoiding that the pump loses its priming.
GQV, GQS
Submersible sewage and drainage pumps.
- Single-impeller submersible pumps, with free-flow (vortex) impeller.
- GQS: with vertical threaded delivery port G 1 1/2″ or G 2″.
- GQV: with horizontal G 2” or G 2”1/2 threaded delivery port and with DN 50 or DN 65 flanged delivery port.
- Double mechanical shaft seal with interposed oil chamber, to protect against dry-running.
NM, NMD
Close-coupled, centrifugal pumps with screwed connections; electric motor with extended shaft directly connected to the pump.
NM: single-impeller
NMD: with two back-to-back impellers (with axial thrust balancing).
Connections: threaded ports ISO 228/1 (BS 2779).
NM, NMD: version with pump casing and lantern bracket in cast iron.
BNM, BNMD: version with pump casing and lantern bracket in bronze.
The pumps are supplied fully painted.
End-suction centrifugal pumps EN 733 2- and 4- pole Product Description
Single-stage end-suction centrifugal pumps, with bearing bracket.
- The electropumps N, B-N, N4, B-N4 series comply with the European Regulation no. 547/2012 in force starting from 01.01.2013.
- Nominal duty points and main dimensions in accordance with EN 733.
- Back Pull-Out construction, for simple and quick dismantling and reassembly.
- N, N4: version with pump casing and lanter bracket in cast iron.
- B-N, B-N4: version with pump casing and lanter bracket in bronze (the pumps are supplied fully painted).
- Rated speed of rotation (50 Hz): N = 2900 rpm.; N4 = 1450 rpm.
Shaft sealing
- Standardized mechanical seal in accordance with ISO 3069.
- Stuffing box seal (on request).
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