Sporlan LAC-4 Pressure Control Valve, 3/8 Inch, ODF Solder, 210 psig, 1/2 Inch Port, Brass Body, Metal Seat, 4.73 Inch H x 1.94 Inch W
The LAC-4 is a three way modulating valve that responds to discharge pressure. The discharge pressure bleeds around the pushrod to the underside of the diaphragm. The discharge pressure opposes the dome pressure. When the outdoor ambient falls, the condensing pressure falls. This causes the discharge pressure to fall as well. When the discharge pressure falls below the dome pressure, the valve modulates open to the discharge port which allows discharge gas to bypass the condenser. Mixing the discharge gas with the liquid creates a high pressure at the condenser outlet, reducing the flow and causing liquid to back up in the condenser. Flooding the condenser reduces the area available for condensing. This reduction in effective condenser surface area results in a rise in condensing pressure. During summer conditions, the discharge pressure is high thus closing the discharge port. Hence, there is full liquid flow from the condenser to the receiver.
- 3-way non-adjustable head pressure control valve
- Limits the flow of refrigerant from the condenser to the receiver
- Maintains more consistent head pressure than fan cycling controls
- Install in liquid line between condenser and receiver
- Domed steel element
- Copper connection
- Knife edge metal to metal joints
