With the hand valve in this position, the pressure indicated on both gauges will be the same.Both hand valves are open, allowing a common passage to the centre port.With the hand valves in this position, the low side indicator indicates the low side pressure, and the high side indicator indicates the high side pressure.The low-side port is blocked off by the closed low-side hand valve.The low side gauge will continue to record the low side pressure only, and the high side gauge will continue to record only the high side pressure.Note that the port on the high side is blocked from the central port.
Hvac manifold gauges manual#
The manual valve of the low side collector is open and the passage from the low side port to the central port is open.The hand valves are only opened to add or remove refrigerant from the system or to allow the vacuum pump to remove moisture and contaminants from the system.This opens the passage to the center hose port of the manifold set. The hand valves are opened by turning the handle counterclockwise.Here both valves are closed and the refrigerant pressure can still be recorded on each respective gauge.When the gauge set is installed on a system and both hand valves are closed, the gauges read the pressure exerted on them.The flow control valves within the manifold are closed when the hand valves are turned in all the way in a clockwise direction.The manifold gauge set has two hand valves used to regulate the flow of refrigerant through the manifold.The hose on the left is blue and is connected to the low pressure/suction side of the air conditioning system. Because the gauge reads in two different ranges of pressure, it is usually called a compound gauge. The manifold valve is used in air conditioning or HAVC systems.Ī manifold gauge set consists of a manifold block, two hand valves, three refrigerant hoses, and two pressure gauges. The gauge is also used to release moisture and sludge. These pressures tell the technician if the system is operating correctly or if there is a problem with the system.
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