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JB Industries DV-22N Digital Vacuum Gauge


JB Industries DV-22N Digital Vacuum Gauge


JB’s DV-22 reads vacuum in seven international units: microns, PSIA, In, bars, Pascal’s, Torre and more. The DV-22 has a micron range of 20 to 9,000 microns. It is a good idea to attach the micron gauge to the vacuum pump before evacuation to make sure the pump pulls down to at least 50 microns. If it doesn’t, your pump oil is contaminated and should be changed. A compound gauge only indicates that a vacuum is being produced, but does not tell you if moisture and acids are still present in the system. Micron gauges are the only tool to accurately read the low pressure produced when evacuation/dehydration is complete. Refer to page 11 of our catalog for more information.

  • Effective range 20-9,000 microns – Low battery indicator alerts to replacing 9-Volt battery (not included)
  • Saves last vacuum readout after shut-down – Leak-proof with O-ring coupler to ensure proper register of vacuum
  • Powers off after 10 minutes of no use to preserve battery life – +32 degrees F to 120 degrees F (+0 degrees C to 48.9 degrees C) ambient temperature
  • NIST traceable – The female connection on this unit allows for direct connection to the A/C unit without need of hose connection
  • Automatically adjusts for fluctuating temperature – T2-4 flare tee used to attach hoses to gauge (sold separately)

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What customers say about JB Industries DV-22N Digital Vacuum Gauge?

  1. 7 of 8 people found the following review helpful
    1.0 out of 5 stars
    Junk used maybe 5 times and doesn’t hold vacuum, May 17, 2014
    By 

    This review is from: JB Industries DV-22N Digital Vacuum Gauge (Tools & Home Improvement)
    20 year HVAC vet. I used this maybe five times and it’s only a year old. I was wondering why it was not holding vacuum. Even when I connected it directly to my vacuum pump with nothing else attached to the pump, I would pump down to 50 microns and when I turn the pump off it would climb right back up to 2000 plus. Something must be leaking inside it. Now it’s out of warranty.
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  2. 3 of 3 people found the following review helpful
    1.0 out of 5 stars
    One Big Achilles Heel, May 6, 2015
    By 

    This review is from: JB Industries DV-22N Digital Vacuum Gauge (Tools & Home Improvement)
    Im going to skip all my anger for product and give helpful facts.
    1. First purchase at a distributor, used on 2 units and seemed to take very very long-like 4 hours to pull units down. borrowed friends whole kit pump and all for second job couldn’t figure out issue. Later found the o ring was broken after 2 uses got an entire warranty micron gauge back.Put it on one unit that struggled to pull down and then started this year up trying to use and really would not lock out. pulled my hair out.
    2. to find what was leaking i eliminated unit, still leak, eliminated inner manifold, still leak, put from pump to low side guage,still leak, went from pump to yellow jacket shreader core remover/ quik vacuum schreader remover tool and then to micron guage. basically i went strait thru with it to make use of the ball valve for lock out !no hoses here! and pumped to 20 microns and locked out up on very quickly above 500 microns and under 5 minutes raised to over 2k microns.
    3. returning to vendor tomorrow.
    Unit did read microns and inHg which was nice and had a back light but i don’t care if it is a super computer if it cant hold negative pressure.
    4. I do not know what brand i will use next nor do I have a recommendation not relevant to the review as well.
    5. This product did in fact cost me an actual conservative estimate of about 1,500$ in fuel and pump oil changes and testing, and leak check labor after leak check labor hour in just one year.
    6. Been in industry for a decade am currently employed as an hvac equipment manufacturers R&D / service support engineer, traveling all across the east coast to make factory repairs/checking installation to chillers and med/large vav systems.
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  3. 1 of 1 people found the following review helpful
    4.0 out of 5 stars
    Decent tool. Reasonable price, August 17, 2013
    By 

    Verified Purchase(What’s this?)
    This review is from: JB Industries DV-22N Digital Vacuum Gauge (Tools & Home Improvement)
    Easily operated. The auto cal is sometimes disconcerting, but better than manual. Would be nice if it had included a plug to seal off sensor when not in use. Operates as advertised.
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