Volute Centrifugal Pump LW Series

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General Description
The type LW pump is single-stage single-suction vertical volute centrifugal clear water pump. It is widely used to handling circulation water for power stations, mining drainage as well as water supply & drainage of municipal facilities and farmlands. It is provided for delivering clear water without solid particles or other liquid which is physically and chemically similar to clear water. The highest temperature of the liquid must below 50℃.

Performance range
Capacity  Q:  1.6~6.8m3/s
Head        H:  13.1~63m

Instruction of pump type
For example            LW44P Left-11JA
LW—Large scale vertical single-stage single-suction volute centrifugal   pump.
44— inlet diameter 44 inch.
P—the pump foundation plate is changed
Left—the rotation of impeller is clockwise looking from the motor to the pump.No indication when the rotation of impeller is counter clockwise.
22—the number obtained from the pump specific speed divided by 10.
I—Difference of impeller in construction, indicating Ⅰ, Ⅱ…… .
A—Outer diameter of impeller has bee changed. Indicating A, B, C…….

Structure
*The pump is vertically installed with the inlet vertical downward and the outlet horizontal extending.
*The pump and the motor are connected directly and mounted on one concrete foundation.
* The seal usually uses packing seal.
*The pump adopts rolling bearings.
*The impeller has construction of balancing rib.
* The axial force is carried by the motor.

The direction of rotation
The rotation of pump rotor is counter clockwise looking from the motor to the pump. Indicating “left” in pump type if you require the rotation of pump rotor is clockwise .Both rotation mode have same performance data.

Material of main parts  
Impeller: cast iron/ cast steel ZG310-570/stainless steel.
Sealing ring: Cast iron /abrasion-resistant cast iron/stainless steel.
Shaft: 45# carbon steel.

Parts range
Pump, Motor, Foundation plate and Mounting resistant cushion.

Remind
Please indicate the material of main parts in your inquiry or purchase contract. Any special requirement, please don’t hesitate to contact us.

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Q:What's the submersible pump?
Zhengzhou sea diving pump. Deep well submersible pump is a fountain, drinking water transportation, irrigation, hot springs, high-rise transport facilities, etc., deep well submersible pump excellent performance, so widely used in various fields.
Q:Does the water pump and the circulating pump belong to the centrifugal pump?
They're all centrifugal pumps!
Q:Why does the GB/T3216 specify the pump performance tolerance as positive and negative?
Tolerance coefficient is due in the manufacturing process, will, so each pump products are possible shapes and sizes do not conform to the pattern of the situation, and ensure the test results in the value (operating point) when compared, should be allowed to have a certain tolerance. It should be noted that these tolerances are only relevant to the actual pump and do not involve test conditions and measurement uncertainties. If the pump at a certain working point (the same lift) standard (Design) flow of 20m3/h, the actual flow of 22m3/h, indicating that the pump in the design process has unreasonable place, resulting in waste of power. Deviations from the manufacturing process usually have no positive deviation.A pump is a machine that transports liquids or pumps liquids. It will be the prime mover of the mechanical energy or other external energy transfer to the liquid, the liquid energy increase, mainly used to transport liquids including water, oil, alkali liquid, emulsion, suspension emulsion and liquid metal, but also transport liquid, gas mixtures and liquids containing suspended solids. Pump performance of technical parameters are flow, suction, lift, shaft power, water power, efficiency, etc.; according to the different principles of work can be divided into volume pumps, vane pumps and other types. Displacement pump is to use its studio volume changes to transfer energy; vane pump is to use the rotating blade and water interaction to transfer energy, there are centrifugal pumps, axial flow pumps and mixed flow pumps and other types.
Q:What is the difference between self-priming and non self suction?
The self-priming condition of the centrifugal pump is that a small water tank is attached to the pump body. Don't use water every time you start. No suction, no water tank. And the use of volumetric Self-priming pumps, such as car cleaning, high-pressure pumps are in this category.
Q:Why can domestic pumps sometimes pump water and sometimes not?
This fully automatic self-priming pump, if there is no water, there are 4,A. The air in the pump cavity is exhausted. The solution is to unscrew the copper screw on the pump body,Two. Water pipe leakage solution, check the joints and piping to ensure reliable sealingThree. At the end of the valve or three does not open or there is a serious blockage, solutions to check the bottom valve goods three psychic activity,Four. Leakage of seal in pump, adjust or replace the sealWhat's more, you feel that there is a leak in your water inlet. Check the three pass on the water inlet of the water pump. Think of this fully automatic pump. The switch for your tap water can be kept open all the time
Q:Fire pump control cabinet installation distance, ground height should be how much?
30MC is fine. There are no definite rulesSome drawings of the introduction is explained, because the drainage of the water pump in the case of clogging, may be submerged into the water pump control cabinet, causing some unnecessary trouble
Q:How to introduce water pump?
First, to explain the basic parameters, such as pump flow, head, motor power, efficiency, outlet diameter, single-stage pump or multi-stage pump, fixed pump or submersible pump, water pump or sewage pump, deep well pump, self suction pump etc..
Q:Electrical design into!!! Is the water pump lamp waterproof?
No specific requirements are available
Q:What motor with Grundfos pumps
Is a good question, bigualu regular with the Danish brand and a German brand is willard. The motor hasn't been disassembled yet. You can help me look around.
Q:Diving pump voltage
This is the reason why the line is too long and the power consumption is too large

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