beaiguna nitrogen regulator, 0-800psi nitrogen regulator hvac with cga580 inlet, 1/4" male flare outlet connection, nitrogen tank regulator for hvac purging, leak checking, pressure testing, welding is up for auction in Tools & Home Improvement. The current bid is $1.00, 96% below the $26.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.