Pfister lav faucet water flow cuts out after 10 seconds

[Pman6]

[h=1]Pfister G149-6002 Pfirst Series 8-Inch Widespread Bathroom Faucet[/h]
^Pfister G149-6002 faucet
This is a "watersense" water conserving faucet. But I don't know if the problem has something to do with this.

When I turn on the faucet, it flows nicely, and then 10 seconds later, I hear a suction sound, and the water flow cuts in half.
it seems like when the water flow is too high, the faucet senses it, and cuts the flow.

To get it to flow at max rate again, I have to turn off the faucet, and turn the knobs open just a little, rather than all the way.

Is this normal operation?

are you aware of faucets that automatically cut flow of water ?

 

[Hackney plumbing]

You may have those flood stop water supplies and they think the flow is so great there must be a leak. Get rid of them and install real pipe to the faucet

 

[Sponsor]

 

[Pman6]

I didn't change the valves.
the supply valves are normal brasscrafts, not flood stop type.
the old faucets didn't have this behavior.

I have 2 of these pfister faucets, and both display the same behavior

all the plumbing under the sink is normal stuff. so the problem must be inside the handle mechanism?

the hose connecting the handles to the spout is the clip-on kind.

here's a pic of the layout-

 

[Terry]

He was referring to the supply lines, not the shutoffs.

 

[Pman6]

yeah. the supply lines are the regular nonfloodsafe kind from home depot.

I found an old thread here that describes a problem similar to mine.
https://terrylove.com/forums/showthread.php?39237-sudden-drop-in-water-pressure-in-PART-of-the-house

I will try removing the aerators and see if that solves it.

The water flows normally for 10 seconds, then I hear a violent jolt in the pipes, and the water flow cuts in half.

 

[Jadnashua]

Disconnect the supply lines to the faucet, get a bucket. Direct the outlet to the bucket and turn the shutoff back on. You may find that the shutoffs no longer shut off. Sounds like there's a chunk of maybe a washer in the supply line that gets pushed up when you turn the faucet on, then falls back down again when off.

 

[Price Pfister]

Hello Pman6,

We're sorry to hear about the problem you’re experiencing with our faucet. We'd like to see if we could help address this issue quickly. Our Consumer Service Team just needs some additional information to proceed.

Please provide:

* Any other specifics on the issue you’re experiencing
* A method to contact you (ex. email, phone, etc.)
* Best time for contact (ex. mornings, evenings, etc.)

Please send this information to us at pfistersocial@bdhhi.com.

We apologize for your inconvenience and look forward to resolving this matter as soon as possible.

Sincerely,

The Pfister Team

Pfister is a part of the Stanley Black & Decker Hardware and Home Improvement (BDHHI) Group.