or loose mounting

often accompanied by a pressure switch lockout code on the control board

it should show a closed circuit

After installing the 1/4" tubing into the brass fittings

While often used on large gas systems

Belimo B219 Valve 30067439-890 or loose mountingFor contractors demanding precise hydronic system control, the Belimo B219 Valve is a robust 2 way Characterized Control Valve (CCV) engineered for optimal performance in diverse HVAC applications. This 3 4" NPT ball valve features a 10 Cv rating and an equal percentage flow characteristic, ensuring stable and accurate regulation of chilled or hot water, even with up to 60% glycol solutions. Constructed with a durable nickel plated forged brass body