Portable Self-priming Single Suction Centrifugal Pump

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Structure and operating principles of Portable Self-priming Single Suction Centrifugal Pump


Diesel engine driven self-priming pump is composed of diesel engine, coupling, pump body, impeller, rear cover, mechanicalseal, pump spindle, bearing block, imported pump, gas-liquid separator tube, water valve and drain connection. The structure of the pump is shown in the following figure.

Principle of operation: The pump body with fluid reservoir inside and the working chamber of the pump, being connected with each other through the reflowingvalve on the upper side and circulation valve beneath it, form the axial-flow outer recirculation system of the pump. When the pump stops working, it already has a volume of liquid reserve inside its fluid reservoir, when the pump runs, the liquid inside is ejected upward with the air flow under the function of impeller, then it reflows into the working cavity through the gas-liquid separator tube, at the same time, the gas is exhausted out of the pump, which makes the pump vacuumed inside so as to get self-priming realized.


Preparations of Portable Self-priming Single Suction Centrifugal Pump


  • Check the fasteners of the joint parts, such as the pump seat, the coupling and the bearing carrier, and make sure that they would not loosen. If any of them get loose, you should fasten them.

  • Check the connecting pipes and make sure that there is no gas leakage.

  • Switch on the water valve on the top of the pump, add a volume of water,which is no less than 2/3 of the pump volume. Then switch off the water valve. The next time you start the pump, you never need to do water-injection anymore.

  • Get the power line of the storage battery routed to the power source , when the diesel engine is power-on, press down the starting button of the meter panel,  give it a test run to see if it rotates clockwise (counterclockwise rotation is prohibited). 

  • Starting up: Add antifreezingsolution to the water tank of the diesel engine, and fill the fuel tank with diesel oil,then add some lubricating oil (labeled 10w-40)to the engine. Route the power line of the starter to the storage battery and pay attention to the positive and negative poles.

Working Conditions of Portable Self-priming Single Suction Centrifugal Pump


  • Altitude: ≤2500m

  • Ambient temperature: -25-55℃

  • Relative air humidity:9-95%

  • seismicintensity:7

  • Flow Range: 50-70(L/S)

  • Head Range: 5-70m


FAQ of Portable Self-priming Single Suction Centrifugal Pump

  • How can I get trained on CNBM products?

    Yes, we provide training courses in our factory (products, general and specific pump technology, hydraulics, and practical applications). Please consult your sales manager or get in touch with our headquarters for more information.

  • Are your pumps cheaper than those of your competitors?

    CNBM aims to give its customers the highest standards of quality and service and delivery times, all at a reasonable price.

  • Do you have self-priming pumps?

    Yes, our product portfolio also includes two ranges of self-priming pumps: self-priming electric pumps and self-priming side channel pumps.

  • Is it really necessary to fit a bleed valve for the boxes?

    It is always best to have a bleed valve as the gas produced by the fermenting sewage is potentially hazardous.

Portable Self-priming Single Suction Centrifugal Pump

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Suzuki Dt8 Outboard
Q:How many HP of water pump is needed to pump water from ground level to a height of 50 feet?
It depends on your type of pump. Pumps delivering over 200 feet from bore well are usually multi-stage turbine type.
Q:99 Cavalier overheating - is it the water pump?
If it is not your water pump then it sounds like a faulty thermostat. It is allowing some water to get by but not enough to keep it at a good operating temperature. It shows to be hotter than it actually is. It is just an idea, no sense in spending alot of money for something you dont really need.
Q:When you change the timing belt do you also have to change the water pump?
It relies upon on the vehicle, in diverse fashions, like maximum mitsubishis, you could desire to take the timing belt off to alter the water pump. So then that is an included operation and there is not any extra suitable value linked with the exertions to do the timing belt, it merely makes it a handy, value saving time to do it. there is not any rule approximately changing water pumps and timing belts at the same time. If that is not an included operation there is not any element to do them on a similar time. The timing belt is physically powerful preventative upkeep yet there is not any might desire to alter the water pump previously that is showing signs and indicators, and there are a brilliant style of them, that that is going to die.
Q:Standard water pump vs heavy duty?
The intense flow in simple terms strikes greater water in line with revolution the a manufacturing facility pump. Heavy accountability must be the comparable because of the fact the hi-flow, whilst the electrical powered pump would not use the fan belt to coach the pump, this is have been given a small electric powered motor to try this. See if there is any distinction between hi-flow heavy accountability, get one in all those.
Q:would this water pump work?
You did not say where you live and or what kind of canal it is. If this is an irrigation canal and they catch you pumping water out of it , you will be in for a great big surprise when the law shows up at your door with a very expensive ticket or fine. These canals are checked regularly for things like this and they do not put up with people stealing their water. Strongly suggest that you find out who owns the canal and contact them before you start pumping water from it. It could save you literally hundreds of dollars if not more in fines and fees.
Q:Toyota 2006 Sienna, Timing Belt, Water Pump, Drive Belt & Trans Pan Gasket replacement?
Yes, I agree with the others and follow the 90,000 mile rule and have never had a major problem with the 5 Toyotas we have bought from brand new and the longest we have ever kept was 1993 Toyota Camry LE with 211,000 miles that we gave away when my wife and her sisters all insisted on SUVs and she upgraded to 2005 Toyota Highlander 6 cylinder AWD. FYI in addition to timing belt package and water pump, I also have my mechanic replace the thermostat and both fan belts. Finding a good mechanic who has the skills and know-how and works on all kinds of Japanese vehicles is the 1st Major Step. Mine worked a long time ago at the local Toyota dealer and I have seen/witnessed him 1st hand tear down and put back engines transmissions and though his rate slowly creeps up, I stayed with him with 20 years and see him for advice whenever I noticed anything unusual. FYI on timing belt replacements, I put together a list of parts for my mechanic to confirm these are the genuine Toyota parts I need, then there are 2 Toyota dealers in Texas: Toyota of Dallas and Toyota of Richardson TX that sell about 30% discount off of MSRP plus UPS fee and anything I miss or overlooked I let the service station get from the dealer. Regarding the transmission, I simply drain the ATF every 30,000 miles and refill with genuine Toyota ATF fluid and once when I was busy my mechanic did it for $30 plus the Toyota ATF Fluid. Hope the Above info Helps!
Q:what do you need to do to remove water pump?
I believe if you are looking at the motor the water pump will be to your left on top of the motor and to the front. Drain the radiator. There is a big smooth pulley that turns the water pump loosen the 4 10mm bolts, remove the belt the remove the bolts. Under the pulley there will be 5 or 6 8mm bolts remove those, make sure a drain pan is under the pump because there will be some residual coolant in the motor. Scrape the old gasket off of the engine block then reverse the procedures to install the new pump. Make sure you torque the pump to the proper specs so that the pump housing does not distort. You can pick up a Chiltons manual for that car a local parts store that can walk you through this in greater detail with pictures. Good Luck
Q:Water pump cost??????????
Q:Water pump 99 ranger?
Why not call your mechanic for an estimate? He's (or she's) already familiar with your vehicle. Also, they may determine that it's something other than you water pump.

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