plugged water line (sometimes)

Michal

I have seen where the main valve is a globe galve and the washer breaks off and travels down the pipe and blocks up, if that happens well, usually only way to fix it is cut out the fitting. Also Makes me wonder, you replaced a section of galvanized pipe, are the rest of the pipes your refeeding galvanized, if they are, well you will still have the problem of internally corroded pipes blocking flow. and thus resulting in low pressure and flow.

Joe_38

plugged water line (sometimes)

Repaired a leak in an old galvanized water supply to home. when reopened water meter very low volume in the house. Open the frost free wall hydrant which appears to be the first water outlet for the house then there is good flow inside. Close the wall hydrant and the flow diminishes inside the house. This only started after the repair.It seems to me that there is a floating plug plug in the water line.
Any hints to look for for the location of this plug in the line. With minimal wall destruction. The lines are 30 to 40 years old.

Thank You Joe

bigugh_4

Just-a-thought

If you could reverse the flow froom inside to that frostfree hydrant, it may flush out that obstruction. An air compressor may do it. Meter off, the flush could be connected way down stream of the inlet to the house. Removing the stem from the hydrant perhaps would let the 'plug' come out, or perhaps the hydrant it self, so that whole pipe size would be presented to the 'plug'.Just-a-guess

jackchips_2

Joe,

you could try running a hose from the good wall hydrant to another one or to a draw-off somewhere in the house (water heater?) and try to back feed.

Try removing the kitchen sink aerator and leaving it on and opening the tub valve when you do this.

If it is a floating washer it may be in bad enough condition to break up from the back pressure.

Just another suggestion, good luck,

Jack

Joe_38

Thank you

Thank you all I will give it a try and see what comes of it. The main shut off is an old stop and waste valve.

Joe

Michal

there you go

The stop and waste valve is a globe type valve with a washer inside, Like stated earlier, take off all sink strainers, and open em up and let them flow .a good place to backfeed is at the clothes washer connection, do cold only, get a hose and use neighbors hosebibb, they should have equal or enough pressure to push through, now you wont be able to go through meter ot pressure reducing valve, so open that first hosebibb off the main line, you can even remove the "guts" and that way you have almost full port size to blow out of. Good luck