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S#574-505 vacuum breaker.single handle kitchen faucet. water stream slows when handle is open all the way. breaker valve was replaced--did not fix the problem. Is there a spring at the bottom of the breaker valve? If so it may be missing.
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Hi Steve-If the faucet is definitely getting water (making sure all the cut-off valves are open along the way), the Moen single handle faucets all use a replaceable cartridge that is available at home supply stores. This cartridge is what regulates the pressure and the temperature of the water coming out of your faucet. This is likely faulty. You'll need to close the supply valves (hot and cold) underneath your sink prior to replacing.
The specs say that there are two check valves but the diagram does not show them. Take the weight off the hose and see if it is causing the restriction. If it is not, what is the water pressure in the house? The 2.2 GPM is the maximum flow rate.
Could be a blockage in the valves and check any filters any where in line.some sinks in kitchen have a filter under sink and check valve to make sure they are opened all the way.
these faucets have a single handel, and have a cartage that can be taken out and cleaned. Low water pressure is caused by minerals in the water to build up in the cartage and slow down water flow.
start by making sure the valve that supplies hot water to the sink and dish washer is fully open. If there is low hot water pressure in any of the other kitchen/bathrooms, then trace the line to see where the pressure drops. If it is only in the kitchen, it should be an old valve, (causes restriction)Good Luck.
There should be an Allen screw on the underside of the handle. Loosen it to take the handle off, then tighten up the packing nut with a channel-lock wrench.
First try this. Pull out the sprayer and remove from hose by turning nut that connects sprayer to hose. If you can get someone to help you it would be nice since the hose can go down into the faucet and might be trouble to retrieve. Look in the connection on the sprayer where the hose connects and look at the screen. If the screen is plugged or dirty clean and reinsert. If you can't clean it replace it. If this isn't working go to the next suggestion below.
In the spray head of the faucet there is a build up of deposits from use and or water hardness. Here is the link to the Delta site.
Faucets in general operate either with a one handle valve stem or valve stems that uses small pieces of rubber to precent the water flow. In a single handle model this is usually caused by mineral deposits building up and the valve not being able to fully restrict the flow of water. The fix here is usually a new stem. On models that use a two handle system and do have replaceable valve stems one must get a repacement seat from a hadware store and reinstall the stem. In extreme cases the valve body may need to be ground internally and will require a professional. If you do not a have replaceable stems than the only alternative is a new faucet. I hope this assists you and thanks for using Fix Ya.
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