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Moen Kitchen tap 87787 water pressure is extremely low

The water pressure is extremely low following installation. I have removed the lines and checked for any blockages. I have used both compressed air and water from a hose (at a relatively high pressure) to test the various parts. The part which appears to have the problem is under the faucet. There appears to be a valve that does not allow much water through. Is this a common problem? Or has something become lodged in the valve? Any ideas??

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Yes it is very common more so on hot side, the water stops or shutoffs can become plugged with hard water deposits and calcium build up. Shut off main water, unscrew supply lines from shut offs under sink to see if this is indeed the problem.

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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Have grundfos jp4 with controller. it will start up in the night when no taps turned on,? and to me it appears to have less pressure when using the hose? is there a pressure adjustment


No pressure adjustment.
Air bubbles in line will decrease pressure... air vent at highest point can help solve problem.
http://waterheatertimer.org/Repair-water-heater-valve.html#air

Possible leak problem on Hot line somewhere, and/or pressure problem.
Turn off all taps and check before and after result on water meter.
If toilet is running it draws cold water... but if you have bad single-handle faucet cartridge, it can draw hot into the line.
Following links have troubleshoot resources:
http://waterheatertimer.org/Low-water-pressure.html
http://waterheatertimer.org/Crossover.html

Oct 21, 2017 | Grundfos Plumbing

1 Answer

Low water pressure at sink following reinstallation


if low pressure is only on the dishwasher and not sink.check both hoses going to dishwasher for clogs,rubber washer out of line or debris .if low pressure is only at sink ..you could also remove faucet filter ring at tip for sediment or debris .or lastly check valve under sink cabinet that feeds both sink and dishwasher

Dec 15, 2007 | Kenmore 24 in. 17032 Built-in Dishwasher

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No Water Coming Out of The Water Dispensor on G E Refrigerator ?


If you are not getting water thru the door dispenser , first thing to check is if you are getting water to the water valve behind the refrigerator . This is the part in the back of the refrig , that the wall water line connects to .
If your ice maker is making normal size cubes , then you ARE getting water TO the water valve .
However , there are 2 coils on the water valve ( G E ) of which 1 is for the ice maker , and , the other , is for the water dispenser .

1 ) Remove the kick plate from the bottom front of the refrig . On some models , the kick plate " snaps " on , and other models , it is held on by a small screw on each side on the top portion of the kick plate .
Once the kick plate is removed , follow the plastic water line from the bottom of the freezer door , about 6 " , to a small coupling . This coupling , has a " ring " on both ends , one of which has to be pushed in as you pull the tubing from the coupler . Once this is accomplished , put a towel under the end of both ends of the tubing , to keep the floor dry .
2 ) Activate the water dispenser arm . If water comes out in a good stream , from the tubing which goes under the refrig , the water line inside the freezer door is frozen . You can either turn the freezer temp warmer for several days for the line to un-thaw or use compressed air ( I have heard using computer cleaner air bottles with the small tube works ) to the water line going up form the bottom of the freezer door to blow out the frozen ice .
Once the ice thaws , G E has a dispenser heater , part # WR49X10173 which comes with installation instructions , to keep this from happening again . If NO water comes out of either hose , then either the water tank inside the bottom of the refrig is frozen ( which would require several days of warmer temperature settings ) OR the refrig could have a bad coil on the water valve , which would require replacing the complete water valve .
I have only come across maybe 1 tank which was frozen , and the rest have been either the line in the door was frozen OR the water valve needed replaced .

Please note....if using compressed air in the door water line , DO NOT USE EXTREME HIGH PRESSURE , as this could burst the line in the door , causing the complete door to have to be replaced . Just the water line inside the door , is not replaceable .

on Apr 10, 2010 | Refrigerators

3 Answers

How can i unblock a clogged a/c drain line for a1994 jeep


Compressed air, use lower pressure. U can carefully use a wire, don't poke too hard or far tho. The drain line should come off. It will make it easier to clean if it does.

Jun 05, 2014 | 1994 Jeep Grand Cherokee

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Low water pressure in two out of three sinks


Have you removed screens and aerators to make sure they aren't the cause?

May 26, 2014 | Tiffin Motorhomes 2011 Allegro Bus 40 QXP

1 Answer

Low water pressure in one area of house


Copy following link:
http://waterheatertimer.org/Low-hot-water-pressure.html
If one area of house is affected, then clog is usually at elbow or connection point.
Remove water shut-offs, and use compressed air to see if clog can be jostled loose.

Apr 28, 2013 | Water Heaters

1 Answer

Heater is very poor


Has the vehicle been run with anti-freeze its whole life? If not, then flush heater matrix.

With vehicle in cold state, disconnect heater matrix feed and return pipes from within engin bay. Turn the vehicle's internal temperature setting to hot. If the vehicle is fitted with climate control, then do this with the ignition in the 'on' position.

Take a garden hose and with low pressure first, try flushing the matrix. If the water pressure is not enough to flow through matrix at low to medium pressure, then a blockage is almost a certainty. If water does not flow at first, then try using a high pressure air-line to force air and any blockage material through the matrix and out of the exit pipe. You can also reverse the flow to blow or flush any dirt out of the other end.

Once all is clean and free flowing, reconnect and fill entire system with a 50-50 anti freeze-water solution.

If blockage cannot be resolved, then replace heater matrix.

If no blockage is present then continue to check heater control switches and wires.

Oct 29, 2012 | 2000 Lincoln Navigator

1 Answer

Extreme hard start when warm. Keeps coming up


Have the cat checked,sounds like a restriction in the exhaust,or the return line to the tank is restricted,remove the fuel cap,and blow air back to the tank with compressed air,threw the return line,where the pressure regulator bypasses the fuel back to the fuel tank.

May 04, 2010 | GMC K3500 Cars & Trucks

1 Answer

Cold air with low fan but warm air with high fan


If there was a blockage,the low pressure pipe would freeze up after awhile.Check that there is sufficient gas in the system and there are no leaks.The high pressure should be between 8-13 bar and low pressure shouldbe between 1.8-3 bar.

Aug 17, 2009 | 2006 Volkswagen Passat

1 Answer

Pilot light wont stay lit once heater shuts off/ light goes off randomly


Hi Watertec00,

I am not familiar with this heater but it sounds like it could be a blockage in the main gas line into the heater or perhaps a blockage to the pilot gas line and maybe starving for gas. Best bet first is to check the main gas line from the heater. Easiest way to do this is to remove it from the heater and blow it through with compressed air. Then try the heater again. If that doesn't fix the problem then you can try blowing compressed air down through the pilot line. Could be a little dirt creating a blockage there. Then try the heater again. If it still does the same thing then try removing the panels to expose the heater's piping. If you can remove the main pipe into the heater from the gas and blow compressed air through it it should clear any obstruction from both the main line and the pilot. If this doesn't work then I would think you have a more severe problem and will need to take it to your local Heater Repairer. Hope this helps.

Regards
Bryan

Dec 18, 2007 | Procom MN100HPA Heater

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