Boiler Feed Pump MD

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DG Type Perfect Performance High Pressure Boiler Feed Water Pump

Boiler Feed Pump Brief

This pump is horizontal sectional multistage centrifugal pump,due to high pressure and big flow ,widely application for boiler feed industrial,mining,water supply for high bulding,water circulation system,oil field ,etc

Because of different design,it can be divided into five type pumps:

1.D series pump:the medium temperature is not exceed 80°C, applicate to supply and discharge water for high buildings, resident,mine,fire fighting, pressure boosting and refrigeration water circulation for air conditioning, etc.

2.DG series boiler water feed pump:medium temperature is not exceed 160°C, applicate to transport hot water, such as water feed to bolier, municipal and industrial heating system.

3.DY multi-stage centrifugal oil pump: transport oil and oil product without solid at temp range -20—105°C, viscosity is less than 120.C.S.T

4.DF series stainless steel anti-corrosive multi-stage centrifugal pump: transport corrosive liquids without solid at -20—105 °C

5.DM series wearable mining multi-stage centrifugal pump: applicate to transport mining water with particles <1.5%,size<1mm, -20--105°C..

Boiler Feed Pump Parameter range:

Rated flowrate: 6-1000m3/h

Rated head: 40-2000m

Rotate speed: 3500r/min,2900r/min, 1750r/min,1450r/min

Cycle:50Hz/60Hz

Bearing Specification

Pump Model	D6-25	D12-25	D25-30	D25-50	D46-30	D46-50	D85-45	D85-67	D155-30	D155-67	D280-65	D450-60
Bearing specification	N306	N306	N307	N308	N307	N308	N309	N312	N312	N313	N320	N320
Bearing qty	2	2	2	2	2	2	2	2	2	2	2	2

Pump Model

D6-25

D12-25

D25-30

D25-50

D46-30

D46-50

D85-45

D85-67

D155-30

D155-67

D280-65

D450-60

Bearing specification

N306

N307

N308

N307

N308

N309

N312

N313

N320

Bearing qty

Boiler Feed Pump Structure Introduce

1.This series multi-stage pump have two bearings on begin and end shaft, flexible pin coupling coupled between pump and motor,.the rotating direction seen from the motor is clockwise

2.Horizontal suction and vertical discharge,but the DG pump are both vertical.Multi-stage pump 3.The bearing is lubricated by butter.

4.Shaft seal:Gland packing seal /mechnical seal

Q:I was vacuuming up water from my basement I assumed was from the rain, suddenly water started spraying out of a blue pump at the base of my furnace, don't know what the pump does or why its spraying but its making an awful mess.: Furnace Water Pump

Q:My dad wants to buy a salt water pump for a tiny pool.I'm not sure if it's pointless for the size that the pool is, but it is 12x12x3Is it too small of a pool or are there salt water pumps meant for tiny pools that I could look at?A link to any would be nice. :)Thanks!: salt okorder /

Q:I did change water pump before but not on wv beetle?: These waterpumps do tend to go bad early - fault of crappy plastic impeller. Make sure to get a pump with a METAL impeller when you change it. They are available online. Also do the timing belt at the same time - saves you labor because you have it apart already to do the pump. Also you need to check out 2 forums:

Q:What is the function of the backflow pipe of the fire pump?: Generally, it is used to test the fire pump. The procedure is to start the fire pump - turn on the return pipe - return the water to the pool. The purpose of the installation is to prevent damage to the pipe caused by the excessive pressure caused by the pump.

Q:All of a sudden I have no water coming to the house/anywhere from the pump/well outside. It's a newer well, good water quantity (Florida...no dry up problems), no sand in water. I'm new to this house and don't know much about the pump stuff. Is there something I should look at or switch on/off. The breaker is ok. Help, I need a shower! :) Oh, there were about 15 ants around some box, but it didn't look connected to the pump...it's a box to the pool filter thing.: If you are sure you have power to the unit, go to the pressure tank. There should be a pressure control switch with wires going in and out. It may have a reset switch that you can try to reset. You usually have to hold the switch for several seconds for the water pressure to build up past 20 pounds before you release the switch. You can tell if this is working by hearing water flow thru your pipes and/or watching the pressure gauge on the unit.

Q:can a failing water pump sound like rattling or popcorn until the motor begins to over heat? the sound is nearthe waterpump. it goes away once the temp starts to overheat.the temp will get near redline then go down to normal and then start creeping up again. thanks for any replies.: Yes it can! I am curious though if what you are hearing is a really bad water pump or spark knock due to excessive heat or possibly a blown head gasket. Remove the belt and shake the pulley on the water pump. If it moves or rattles at all, then it is probably bad. Seems strange that it hasn't tossed the belt off though if it were that bad. Worth looking though, testing is free, parts are not....

Q:can stress from to much weight cause the engine to get hot and cause your water pump to leak out the weep hole? and what else causes it to leak?: WELL THERES ALOTE OF THINGS BUT THE MOST LIKELY IS MILES ALOTE OF MILES THEN THEY WILL FALL APART I FOUND BEING I WORK ON CARS THAT ABOUT EVERY 50,000 MILES CHANGE THE WATER PUMP AND YOU HAVE NO PROBLEMS

Q:So, my husband and I bought a 1993 Chevrolet Corsica a couple of months ago. This weekend we took a trip that ended up being about 400 miles round trip. About 300 miles into our trip, the Check Engine light came on, but there was no noticable problem with the car, no overheating, no clanking or odd smells, the light went off about 2 minutes later. So we got it home, no problems whatsoever. My husband drove it to work this morning, and we were preparing to go to the store tonight in it, and we noticed a massive amount of radiator fluid under the car and the overflow bottle was empty. The leaking appears to be coming from the engine, and the antifreeze is running down one of the upper belts. Could this be a water pump problem? If so, what is the average cost to repair one (I know water pumps are relatively inexpensive, but we'll need to take it in to a shop). Does anyone have any idea? All replies will be greatly appreciated.: On any pump i have seen, there is a small hole in the back of it. Water/antifreeze will run or spew out of that hole when the engine is running. This is a safety precaution from the manufacturer. Don't know about installation in your vehicle, but it is relatively easy in mine. Everything should be right up front.

Q:I need to get my water pump replaced because it is cracked, a coolant flush and my belt is dry. I went to pep boys because my check engine light came on.They want to charge me 950 for the job. I am reluctant to pay that much. I drive an '06 Pontiac Torrent. I am suppose to take my car in today but I am not sure if I am being ripped off or not. Is 950 too much?: Pep Boys Water Pump

Q:1997 Caravelle 1900BR3.0L HO Volvo PentaSX Cobra OutdriveI have a small leak coming from my raw water pump, it is not a continuous stream just a drop every now and then. The best I can tell it is coming from between the shaft and water pump housing. Is there just a small o-ring there? How can this be fixed?We're going to the lake for Memorial Day Weekend. Will I be alright with the small drip for over the weekend? Then I'll fix it when I can get the parts.: Well I don't know what mavrick is smoking but obviously he hasn't got a clue about a raw water pump on a volvo. He probably is on a sail boat. Here it is. There is a non replaceable seal on the shaft in the back of the pump.You have a 12 year old boat. Its time it went bad. The only way to repair it is to replace the pump. If you could get a seal from Volvo ( I will look it up in a minute) You would have to press the shaft out of the pump and this would more than likely end badly . You would end up replacing it anyway. So replace the pump , If it is just a small drip and the engine is not running hot you can run it but there is no telling when it will all of the sudden just disintegrate.

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