Western Enterprises VN Series HVAC Nitrogen-Purging Regulators/Flowmeter, Nitrogen, 650 psi, 25-35 CFH, 3000 psi (312-VN-650)
$207.33
Hybrid design—regulator and flowmeter all in one Easy-to-read nitrogen cylinder content gauge with preset flow rates Heavy-duty brass body designed for rugged field use No adaptors needed