DG series boiler feed water pump

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Model DG boiler feed water pump is a horizontal multi-stage centrifugal pump and suitable for transporting pure water (with the contained particles content less than 1% and graininess less than 0.1mm) and other liquids of both physical and chemical natures similar to those of pure water.

DG model middle and low pressure boiler feed water pump is applicable to transport medium with temperature of not higher than 105℃, and is mainly used for small boiler water supply or transporting medium similar to hot water.
Performance range of middle and low pressure type
Flow: 3.75~185m³/h, Motor power: 4.0~400kW
Head: 69~684m, Inlet diameter: 40~150mm

DG model hypo-high-pressure boiler feed water pump is applicable to transport medium with temperature of not higher than 160℃ , and is also applicable for small boiler water supply
or transporting medium similar to hot water.

Performance range of hypo-high-pressure boiler feed water pump
Flow: 15~300m³/h,Motor power: 75~1250kW
Head: 390~1050m,Inlet diameter: 65~200mm

Type DG high pressure boiler feed pumps are used for feeding high pressure boiler or pumping high pressure clean water.The temperature of pumped media is not more than 170 C.
Range of capacity:120-1100m³/h
range of total head:967 to 2500m

Q: Looking for a pro's advice here. My Corolla has developed a strange noise over the past few cold weeks (Highs of 10 degrees max, well below zero at night). The sound would best be described as a cricket-type rythmic chirp noticable during acceleration. I don't believe it's a belt because it comes and goes though it has steadily gotten louder. I vaguely remember this sound being related to a bad water pump I had a few years ago. Do you think this could be the same thing? Three years for a water pump? And do water pumps tend to go out more frequently in the cold weather? Thanks!!!: You can do a prelimary check on the water pump. The water pump on this vehicle is not internally driven so the pulley is exposed outside the timing cover. Grab hold of the pulley and try to push it back and forth. There should not be any noticeable play. If there is, the pump is bad. Could it go out in three years? Sure it can especially if the pump previously installed was remanufactured and not brand new. If still in doubt, remove the water pump belt and start the engine. If the noise is still there, then the pump is not the problem. I live on a tropical island, so I can't help with the weather question, but I believe if you use the right type of antifreeze in the right mix ratio there should be no additional wear on the pump in cold weather. The thermostat should keep the engine at normal operating temperature regardless of the outside temperature (except for while it's warming up initially). Good luck!!

Q: Car is ford taurus 98.The car had some problems including overheating as thermostat was bad so was was not working. i drove it 25 miles to garage (i had to stop once because too hot to let it cool), i brought it to Ford who replaced the thermostat. Now they tell me some bits of thermostat broke and they need to replace the waterpump and want $620 for it. The other repair were also extremely expensive and i want to bring it to another garage 1.3 miles away on flat road.-1- is it safe to drive 1.3 mile with no water pump or should iget it towed?-2- should i have to pay for the water pump or is it ford's fault if they did not remove the bits of broken thermostat before reconnecting new thermostat to hose ? Can i prove that the pump was working when i came in if i drove 25 miles with it ?Thanks for your help.: driving it 1.3 miles should be no problem, but why do they believe the water pump is bad? Do they have the water pump off the engine yet? It's not impossible for bits of the thermostat to break up and cause a problem, but it IS unlikely. Was the car maintained with the proper coolant otherwise? It is not unlike a garage to get you in for one repair and sell up to another that you do not need. Please answer the questions above... Thanks for responding!! The thermostat is made so that if the spring breaks (which it can),the pieces are captured around the center post and, generally, can't be sent thru the cooling system. When a pump goes bad, it is usually the bearings that go out and they can create a whirring noise and as they get worse, coolant will start to leak where the shaft comes out of the water pump. A simple way to tell if it is bad is to try to wiggle this shaft or look for coolant leaking out the area of the shaft (with the engine off, of course). To answer your original question tho, IF this is legitimate, then you should pay for the water pump. If the water pump is off already, did they take it off without your knowledge? If so, don't drive it. Get them to put the old one back on (free) and drive it down the road. If it's still on the engine, driving it the 1.3 miles shouldn't be any problem. Best of luck to you P.S. One of the responders above said to loosen the radiator cap because the water heats quicker under pressure. THIS IS NOT CORRECT. If the car were to overheat while the cap was off, you run the risk of losing all of your coolant.

Q: i took off the lower unit to fix the gears. im not sure ill be able to put it back on with out knowing how things work in there.so how exactly does the water get pumped. and what does it have to do with the gears, because even though the prop wasn't turning, the water was still pumping.thanks.: What make?model etc. that is the first step,then contact maker for details

Q: How can I be sure the water pump is the problem before spending $ on repairs. 97 civic overheating.?: You check the water pump by looking at it! Underneath the input shaft of the water-pump is a small weep-hole that leaks coolant if the bearings and seals are shot. If there's no leak in that location absolutely nothing is wrong with the water-pump regardless what you read above. Change the thermostat with a factory OEM unit. Remove the radiator cap when the motor is cold. If the radiator return valve on the bottom is brown and dirty the entire cooling system should be drained, flushed and cleaned. The heater core and radiator cross fins are probably plugged full because of years of not changing the coolant. Is the electric fan working? When the motor starts to overheat, wrap a gloved hand around the top radiator hose. If it's barely warm the thermostat is sticking closed. If it's hot the radiator and entire cooling system needs to be cleaned with Prestone Super Radiator Cleaner.

Q: i have little leak from water pump need to replace it in my mazda 6 2006 v6 3.0l. i have little over 120.000 miles on it. Any body know how much it may cost me?: I don't know why, but the water pump costs between $125 and $160. That seems a little high. It probably retails for $186. Under normal conditions, you just get things out of the way, unbolt the old pump, clean it up and put the new one in. The problem is the other stuff that gets in the way. I'm just estimating the job will take 5-8 hours. Just multiply times the labor rate in your area. Don't forget the anti-freeze when you're done.

Q: I getting some work done to my like replacing the timing cover gasket, oil pan gasket and the water pump gasket...the mechanic I talked to said I need to replace this as well; my thing is the water pump is fine..should I take his advice?: well, since they gotta take all that crap off to change the gasket, I would, it's cheap insurance..

Q: need step by step on how to change water pump: steps okorder /

Q: 1998 Toyota Camry 4-cyl.Engine starts and runs, but makes a horrible, random clunking sound that seems to come from the water pump area. Coolant was seeping from front cover, appeared to be from water pump area again. engine idles, but wont rev up at all.My guess is that a bearing let loose or a vane broke off the water pump and is bouncing around inside, triggering the knock sensor which pulls out all of the timing, not letting it rev. Sound right?If that is the problem, what all is involved in replacing the water pump? Its my roommate's car, but I told him I would fix it if possible to save some money. I'm a fairly competent mechanic, but I don't have the best setup here while I'm away at school, so any info on how involved this will be, how many hours of labor is listed for that, or anything to watch for from someone who has had a similar problem before would be greatly appreciated.: water pump is driven by timing belt. need to replace together. water pump may have threw belt off, explaining no acceleration. weekend job, use new pump, vs. reman. get set with belt and new tensioner.

Q: 94 f150,302. my pump is still leaking after doin the job twice. its a new pump, the first time i used the red silicone between pump and plate,both sides of gasket,and the housing on the block. leaked. then did it again with high tack gasket cement and still leaks. i cleaned all metal both times with brake clean before installing. same with thermostat housing,small leak. ive done 100s of pumps over the years,no problems, so please no rude remarks on mechanical ability. what could it be? it leaks up front of the motor above the crossmember where ya cant actually see the leak,its not a freeze plug. bolts are torqued. any ideas ? thanks: Die and tap the bolts and holes you might be getting false torque measurements. take a straight edge to your new pump, It could be fuggered right out of the box.

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