pressure reducing valve

  1. pennstump

    Vibrating / Chattering Pipes Behind PRV

    Hi. Newbie here. I've searched for help on this topic all across the Internet and I couldn't find anything. So, I thought I'd ask the pros. I have pipes at the main that sometimes violently vibrate / chatter. This seems to happen during medium to heavy flow. Here's my setup: Water comes up...
  2. pilotdog68

    Water pressure at 80-85psi, do I need a PRV?

    My water softener got fried (because of a dumb mistake) and before putting in a new one I decided to install a whole house filter and bypass loop to tame the chlorine. Part of that loop includes some pressure gauges and I found that our pressure is pretty steadily 80-85psi on city water. I...
  3. ari

    Pressure testing residential system containing a pressure reducing valve

    Hi, I would like to pressure test my PEX system before use. It seems this is often done with air. I found a hose fitting with a Schrader valve and my plan was to use my bike tire pump which has a gauge on it. The system also contains a gauge, as well as a pressure reducing valve with an outlet...
  4. XianKuma

    Help with pressure reduction valve connection

    I am attempting to replace a pressure reduction valve where the water comes into the house from the city. Water pressure at the spigot was measured at 140 psi. I bought a replacement valve of the same size but different brand. When I went to replace it I ran into a big problem. The connections...
  5. Terry

    PRV replacement, how often? Pressure Reducing Valve

    How often do PRV's get replaced in a home? Good question. Sometimes when they fail to reduce pressure. Replacement or new parts at that time, assuming you have the parts. It's normally easier for a plumber to show up with a new PRV and just replace the old one. Time is money you know. And can...
  6. Rebecca3030

    Need the order of shutoff, pressure reducing valve, ect

    Shared well will be closed March 1st by neighbor as a result of water sample result. They won't consider shock/ chlorination. Installation of new city water line starting next week. (January in Indiana) Meter will be at top of driveway 1,800 ft from my home. Have shutoff valve outside. Main...
  7. Jedward

    Major Water Hammer Issue

    I'm at a loss - I've tried everything I can think of, so its time to turn to the experts. I've attached a rudimentary schematic to help you understand the general layout of things. My House is up on a hill, so the street (including municipal water) is probably 15-20 vertical feet below the...
  8. aczar

    Pressure reducing valves

    Hello! I need a pressure reducing valve as I've just discovered that my service line clocks in at around 95 psi, which I believe would explain a couple of (cheap) garden hoses blistering. I called around the local plumbing supply stores and was quoted a pretty consistent ~$300 (Canadian) for a...
  9. Confoozled

    (more about) 120 psi static pressure

    Hi again all. I installed a new expansion tank (ET) which I pre-charged to 55 psi. After installing the ET, and with the WH off, I still have 120 psi static which drops to 90 with a tap opened to low flow; it returns to 120 psi in 2 mins after closing the tap. It drops to 55 within 2 mins of...
  10. BobD777

    Boiler, Leaking pressure relief valve

    Thanks in advance for your help on this! I've had a leak in a pressure relief valve coming off the boiler that is now being used only for DHW. I changed the relief valve, but it still leaks. So I'm now thinking about looking at replacing the system's pressure reducing valve (taco 329-3), since...
  11. Plangfield

    Whistling and hammering new pressure reduction valve

    We're selling a 3-year-old, new-build home. We've never had any plumbing issues and had several inspectors look at the house both as a buyer, and now as a seller. The current buyer's inspector identified that the water pressure is too high (about 100psi), and the buyer required installation of...
  12. Oli

    Knocking while water is running

    Hello, while my water is running and for a time after I turn it off my pipes knock quite a lot (sometimes even just in the middle of the night). I'm wondering if it's the PRV because the downstream water pressure is set to 60 and will go to that after I turn the water off but will rise back to...
  13. Mike Garrod

    Expansion tank for hot water tank?

    According to Canadian NPC, provision must be made for thermal expansion when check valves or pressure reducing valves are installed. Is the T&P relief valve sufficient to meet this requirement? Or must an expansion tank be installed. I always install an expansion tank when check valves are...
  14. GS_Texas

    Water pressure drops, then returns to normal (pressure regulating valve issue?)

    For two weeks now, our house water pressure oddly drops briefly, then returns to normal. This started after returning from a trip (about a month of no use). Video (https://tinyurl.com/y9oybl5c) We have city water. About 1 year ago, we called a plumber to adjust our low water pressure; the...
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