Q: Since we have now been on greater water strain from a brand new supply, we’re getting extra noise within the pipes. Not banging or clunking, simply extra water transferring by the system quicker, sort of a “speeding” noise. The pipe into the home is plastic, then hooks into copper pipe. The noise reverberates down the entire line, and for the reason that pipe is strapped to the ground joists, it makes the noise underneath the kitchen, toilet and one bed room. I learn about having a foot or so of capped pipe going up from a line to entice air and cushion the noise of “on” and “off” clunking, however this has me stumped. I’m on the level now the place I’m about prepared to tear the strapping off and placing foam across the pipes earlier than I strap them again up. Earlier than I spend the cash on this, I believed I might verify with you to see if that’s what I must do, or are you able to recommend one thing else? Thanks very a lot.
A: A discount of 1.5:1 (sometimes three/four” to half” is usually used to extend or preserve water strain all through a home. The idea is that, given fixed provide strain, limiting quantity will enhance velocity. Launched strain at a fixture might be compensated for by this elevated velocity.
I anticipate your cold and warm provide pipes are half inch diameter. What diameter is the plastic feed? If the discount is bigger than 1.5:1 it is fairly probably that the rate is nice sufficient to trigger noise within the pipe.
Examine that each one the shut-off valves (beneath the sinks and so forth.) are fully open. They too, could cause turbulence/noise by limiting water stream. Additionally, verify all of the pipes to see if there are any crushed or dented sections.
Foam wrap is a good for insulating functions, however maybe a little bit too delicate for noise damping (it might crush flat). By all means, wrap the pipes, however use denser rubber for vibration pads. Further bracing (for clamping to) may additionally assist.
Various: Earlier than you begin pulling out nails, verify the water velocity at your fixtures, and if this can be very excessive, a strain lowering valve may be put in on the availability line.