Double Impeller Centrifugal Pump

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Double Impeller Centrifugal Pump

The SCM2 series are with two back to backimpellers, It is used for high head values, but if hard to reach with single impeller centrifugal pump.Suitable for civil and industrial uses to pump clean water and chemically non-aggresived liquid.Particularly be used for increasing for supply pressure, feeding boilers and loading extremely. These pump should be installed in a covered area, protected against the weather.

Pump body:Cast Iron

Impeller: Double brasss impeller

Motor:Closed, Externally ventilated

Insulation class:B(Class F if required)

Protection class: IP54/IP55

Duty:Continuously rated

Mechanical seal:Φ16, Φ18,Φ25 silicon carbide/graphite

Shaft:Stainless steel AISI 420

The normal power standard is 220v,50HZ,single phase

Three phase 220v/380v, 50HZ, 220V/460V, 60HZ

Single phase 230V, 240V, 127V,110V,115V/ 60HZ

Models are avaliable on request.

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Q:Physics behind this PVC Water Pump?
It isn't practical to give a detailed description here. This is a positive displacement pump. The pump chamber is sealed so that as the piston is moved up the volume within the chamber increases. Water is pushed into this chamber by the outside air pressure. If the pump is located too far above the water source then the air pressure is not sufficient and you will produce a vacuum inside but the water still will not flow. When the pump is pushed down the water flows out. Now the one way valves are critical. We don't want the water to flow back the way it came and we don't want the water that we have already pumped to flow back into the pump. So a one way valve on the inlet will permit water to flow into the pump but not out of it. And a one way valve on the outlet will permit water to flow OUT of the pump but not into it. So with each stroke you a) reduce the pressure in the pump. b) water is forced from the inlet, past its one way valve and then into the pump. c) the pump is pushed down increasing the pressure in the pump. d) water flows out of the pump through the other one way valve and on to the output.
Q:1991 Honda Accord needs water pump. Hard to fix?
It is a pretty big deal. Essentially, the timing belt has to be replaced because the pump is driven by the timing belt. It would be crazy to put the old belt back on unless there is less than ten thousand miles on the belt. For the same reason it is common practice to replace the water pump when replacing the belt. If you are going to do it yourself get a hefty impact wrench - 450 ft-lbs minimum - even if you have to rent it. Loosening the crank bolt by hand is a Herculean task and my 500 ft-lb impact struggles. Always use non-silicate antifreeze in your Honda. Silicates can cause the water pump seal to fail early. If in doubt, get the proper stuff from the dealer. I believe it is premixed, but in case my old mind is playing tricks always dilute antifreeze with purified water.
Q:Labour involved in replacing a water pump?
About 1/2 hour to replace battery and cable end. Water pump about 2 hours if everything comes apart easy. Being 23 years old it could take much longer because of rusted or corroded bolts.
There are pressure switches that have a low water cut out on them.If the pressure drops too low the switch will turn the pump off.This however my not be a 100% cure.If you used just enough water to turn the pump on and then shut the flow of water off and the pump was not pumping water for the reasons you stated it would continue to run and not build up enough pressure to turn it off.If you wanted to do some sort of timer you could contact an electrician and ask about a timer that could be acctivated when the pump comes on. I am not aware of any thing on the market made for this but a good electrician would know where to get the right components to do this.
Q:1973 Charger water pump belt?
Well without seeing the problem I would say you either didn't put everything back or like the other guy answered you loosen usually the bolts to the alternator or power steering pump and use a pry bar to tighten everything up.
Q:what tools do i need to remove the fan on my BMW and get to the water pump?
You need to get the large nut lose. It holds the fan/fan clutch to the water pump shaft. After you get that off it's all down hill from there.A large adjustable wrench will work on the nut but you will need to keep pump from turning to loosen it. I think it may be left hand thread. It is not on real tight. The book will help on this one.
Q:Having problems removing water pump on 1996 3800 series ii motor someone please give me correct instructions ?
to get the water pump out you need to remove the water pump pulley first it has four 10 mm bolts (I have seem them with 8 mm bolt with a large shoulder on them too ) you can break the bolts loose one of 2 ways 1) put a long screwdriver between the two of the bolt to hold the pulley in place while u break one loose then spin the pulley around rinse and repeat once there all loose u can turn them out by hand and pull off the pulley some time u have to give the pully a little tap to come off you shouldn't need to take off the motor mount unless u plan on chaging the serpintine belt ? be sure once you get the pump off you clean the block side of the surface really good with a scraper make sure u get all the old gasket off the block side so it will seal right when u install the new pump I also recommend a tube of ultra black rtv sealant and only black I have used blue silicone before on many occasion and it has failed me I only use black rtv plus it makes it a lot easier if you have to replace the pump in the future as it come off a little easyier hope this helps a little good luck may the car gods be with you also I would recommend doing a back flush with warm or hot water and using the old school green antifreeze either full or 50/50 mix Dexcool orange has a very well know issue of eating gaskets and putting engine into a vapor lock very costly to fix
Q:How to identify the motor series of pumps
With 3000 of the rated speed divided by motor, motor poles after rounding.The number of poles is two times the number of poles.
Q:where is the water pump on 97 ?
Q:When using a frequency converter to adjust the pump, what is the relationship between the change of the speed and the efficiency of the pump?
The wind pumps such load is usually called square torque load, which is in a certain range of speed and torque is roughly proportional to the square of the speed of N, TL=kn^2, power and speed is proportional to the cube, the energy-saving effect is obvious.

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