CLZ pump

I-d. Self-priming Centrifugal CLZ Pump

Qmax to 100m3/h, Hmax to 100m, self-priming device in pump casing

SKU: Built-in self-priming device, Compact structure, Inline flange connection type, Easy installation/service. Categories: , , ,

The SILI CLZ pump is a single stage, single suction, vertical centrifugal marine pump, especially with built-in self-priming device. (No need for extra water ring or air ejector vacuum pump). CLZ pump is suitable liquid for fire-fighting pump, bilge pump, ballast pump, G/S (general service pump), and also cooling pump. With its built-in self-priming device, CLZ pump is very suitable for the emergency condition purpose, there is no need extra self-priming pump, etc water ring vacuum pump or air ejector pump, so it save space and make easy operation and maintenance. CLZ pump spare parts can be also available in our sides.


CLZ vertical self-priming centrifugal marine pump Feather:

a. High quality mechanical seals, carbon/ceramics/stainless steel material.

b. Bronze pump casing&body, impellers and stainless steel shaft as standard for sea water.

c. Mounting system: shaft supported by radial and thrust ball bearings either grease or self-lubricated.

e. Flanges are usually in Chinese GB standard, however other standard flanges in EN(DIN), ANSI, and JIS and so on, can be also provided.

f. Coupled to 2 pole quality IEC motor configurations, with high level class and insulation, in both 50Hz or 60Hz, suitable for marine purpose.

d. Self-priming Principle, The pump casing is provided with liquid storage chamber insides, which is connected with pump casing through return port and circulation port. When pump starting, the storage liquid will be tossed up along with the air, and the air will be discharged outsides pump. The pump self-suction head is about 4 to 5 meter, it takes about 2 to 3 minutes.

Refer to pump and its spare parts details from the CLZ pump catalogue, and contact us more information for CLZ pump specification, manual, installation dimension and so on.


The CLZ pump, in spacer coupling type and monoblock(direct) type design. The pumps are available in sizes ranging from 25 mm to 125 mm on the suction flange. The suction flange is bigger than the discharge flange in 2 poles motor pump.

The CLZ pump is a single stage, single suction self-priming centrifugal pump with stainless steel shaft, mechanical shaft seals and closed impeller. The pump is a so-called “in-line” type, i.e. suction and pressure branches are mounted on the centre line.

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CLZ pump Technical details:

–Motor: 2 pole quality IEC motor configurations, with high level class(class F or higher) and insulation(insulation IP44 or higher), in both 50Hz or 60Hz, Y-H series, suitable for marine purpose, Starting in direct type(small power) or Star-delta type.

–Material: pump casing/cover: bronze(sea water) or cast iron(fresh water), pump impeller: bronze, shaft and key, stainless steel

–Shaft seal: mechanical seal, material: SIC(silicon carbide),hard alloy and ceramics, double face mechanical seal for big power pump.

–Coupling: flexible coupling type, material in carbon steel

–Bearing: motor side, two enclosed antifriction bearing, lubricated by grease; pump side, upper antifriction bearing, lower thrust bearing, lubricated by oil or grease.

–Priming: with a built-in self-priming device, priming pump casing and cover. Suction head 3 to 4 meter.

–Accessory: motor terminal box, lifting hooks, grease nipple, oil cup, air vent plug, drain plug, gauge connection plug, built-in self-priming device and so on.

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Standard pump supply range: pump, coupling, motor, pedestal and standard accessories.

Optional supply: accessories: vacuum and pressure gauge, opposite flange, starter, valves, nuts and bolts and so on, suggested min spare parts: 1 pcs of impeller, 1 pcs of shaft, 2 pcs of mechanical seal, 2 sets of bearing, 6 pcs of O-ring

Certificate of classification society available: ABS, BV, and CCS

Standard packing: plywooden case.

Production time: usually in 25 to 35 days for bronze pump, 20 to 25 days for cast iron pump.

Warranty time: one year after shipment.

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Case reference: it is updated in case blog.
Please click the following link for relative case.

1. 2017.3-2 pcs of CLZ self-priming pump to a Mexico client

Usage or application: This pump can be use for fire-fighting, bilge and so on.
Please click the relative category in right of the production picture for more information

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Kindly send your specific inquiry, we will reply you in one working day.
Please contact us through:
a. directly send us an e-mail , sales@silipump.com(suggested).
b. contact us throught the online Skype or Online message(just working time in working day).
c. leave a message on the web.

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