Johnson Controls V46NC-2 Pressure-Actuated, Modulating Valve 3440100Raacth2O

The Johnson Controls V46NC-2 is modulating valve of pressure actuated kind for application in HVAC systems only. It has the special purpose of activating automatically on its own when pressure differences are felt in order to regulate the flow of fluids. Here's how it works: Think of the valve with an embedded mechanism that records the pressure of the fluid that passes through it at any one time. When the pressure builds up, the valve works actively by something known as modulation – which reduces the flow and deflates the pressure to a safer level. In the case if the pressure is low then the valve opens wide to allow a larger pressure that will in turn increase the flow of pressure.