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Low pressure gauge

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Steve_210
Steve_210 Member Posts: 646
in Strictly Steam
Where are you guys buying your 3 pound gauges right now can’t seem to find anything. I have not purchased any in a few years.

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  • Jamie Hall
    Jamie Hall Member Posts: 23,380
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    Don't tell... Amazon...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    ethicalpaul
  • ethicalpaul
    ethicalpaul Member Posts: 5,708
    edited November 2023
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    I found a really good one on Amazon, it even has other ranges, all the way down to 0-15 inches of water column, let me get the link:

    https://www.amazon.com/dp/B0869BP5CF

    It also has zeroing and it's a good price
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
  • Dan_NJ
    Dan_NJ Member Posts: 247
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    I always liked a combination gauge to show vacuum also. Nothing like that seems to exist in the range 0-3 PSI, I think 0-15 PSI with vacuum was the lowest range i ever found.
  • Waher
    Waher Member Posts: 252
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    Cheap 0-3PSI made in China:
    https://www.amazon.com/gp/product/B00H9ZWLZG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
    Seems to be accurate, can be rezeroed. You want to protect it with a shut off valve before it.

    Top of the line American made:
    https://dwyer-inst.com/en/series-magnehelic-2000.html

    Scroll down to 2203 for 0-3PSI, the more accurate (more divisions on the pressure scale) 0-2 and 0-1 PSI gauges are 2202 and 2201.

    Basically bulletproof pressure wise because these gauges will take 15psi before failing.
  • ethicalpaul
    ethicalpaul Member Posts: 5,708
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    They don’t even fail. They have a pop off plug that goes first.

    you can get them NOS or used on eBay for $20 sometimes 
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
  • Mad Dog_2
    Mad Dog_2 Member Posts: 7,049
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    Wika...online search  Gkod quality so far   mad Dog 🐕 
    Consulting by Mad Dog & Matt Jr.
  • Steve_210
    Steve_210 Member Posts: 646
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    Always used wika just ordered some cheap ones can’t hurt 1 wika
  • guzzinerd
    guzzinerd Member Posts: 235
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    Waher said:
    Cheap 0-3PSI made in China: https://www.amazon.com/gp/product/B00H9ZWLZG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 Seems to be accurate, can be rezeroed. You want to protect it with a shut off valve before it. Top of the line American made: https://dwyer-inst.com/en/series-magnehelic-2000.html Scroll down to 2203 for 0-3PSI, the more accurate (more divisions on the pressure scale) 0-2 and 0-1 PSI gauges are 2202 and 2201. Basically bulletproof pressure wise because these gauges will take 15psi before failing.
    Interesting but the Dwyers have a max temp of 140°f on the cover.   Assuming not good for measuring steam?
    Bryant 245-8 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains.  26 radiators heating up 3800sqf.
  • Steve_210
    Steve_210 Member Posts: 646
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    I always put a valve on anyway and leave it turned off. I only use it to check the pressure when I’m there too many supers and handyman changeing the pressure and damage the gauge..
  • ethicalpaul
    ethicalpaul Member Posts: 5,708
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    guzzinerd said:


    Interesting but the Dwyers have a max temp of 140°f on the cover.   Assuming not good for measuring steam?

    There is a cushion of air in the pipe below the gauge. Unless you put a radiator vent on the gauge, the steam won't get to it, depending on length and size of pipe.
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
  • guzzinerd
    guzzinerd Member Posts: 235
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    ethicalpaul said:
    Interesting but the Dwyers have a max temp of 140°f on the cover.   Assuming not good for measuring steam?
    There is a cushion of air in the pipe below the gauge. Unless you put a radiator vent on the gauge, the steam won't get to it, depending on length and size of pipe.
    Thanks.  My gauge is off a t with the pressuretrol above the pigtail.  Ok to mount there ?  I do have a shut-off to the gauge.
    Bryant 245-8 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains.  26 radiators heating up 3800sqf.
  • ethicalpaul
    ethicalpaul Member Posts: 5,708
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    Sounds good. With a valve below the gauge you're going to be fine
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
    guzzinerd
  • Waher
    Waher Member Posts: 252
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    Interesting but the Dwyers have a max temp of 140°f on the cover.   Assuming not good for measuring steam?

    All of the low pressure gauges need to be protected with a pigtail or a tall enough nipple above the water line to create an air gap so that steam never reaches the gauge.
    guzzinerd

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