Valves and Metering Devices

what are the basics of a metering device?

Name 6 types of metering devices?

Name the main two types of fixed metering devices.

What appliance is commonly used with cap tubes?

What application uses fixed orifice?

Describe a cap tube?

What defines the performance of a cap tube?

Where is the cap tube usually attached?

How is the cap tube usually positioned?

Why is the cap tube positioned that way?

With a cap tube system, what happens to the high and low side once the compressor shuts off?

What is a static condenser?

common cause of cap tube failure?

When replacing a cap tube it is good practice to replace what?

What is a fixed orifice?

How does the Thermostatic expansion valves work?

How does a sensing bulb function?

What is refrigerant vapor that forms in the evap due to a sudden drop in pressure between high and low side of the system called?

Difference in temperature between the evap inlet and the sensing bulb is called?

Turning the TXV adjustor clockwise will do what?

Turning the TXV adjustor counter clockwise will do what?

When a TXV is going too far in one direction and then over correcting and returning too far in the other direction is called what?

The bottom of the TXV diaphgram is exposed to what?

The top of the TXV diaphgram is exposed to what?

Which sensing bulb is uses the same refrigerant as the system?

Which sensing bulb is uses the different refrigerant as the system?

Which sensing bulb contains two substances?

What does the adsoption bulb contain?

What splits the flow of refrigerant into several paths to reduce pressure drops in the evap?

Which metering device is controlled by low side pressure?

if an AXV is not equipped with ______ it will not equalize the high and low side during off cycle.

Which metering device uses an electric operator instead of a diaphragm power assembly.

What metering device uses a flooded system?

Do Pressures balance on a LSF during off cycle?

What metering device regulates refrigerant flow into the evap based on volume of a certain liquid receiver?

Which Valve type is used to deliver discharge vapor into an externally equalized TXV during off cycle and suction vapor during on cycle?

How many inputs and output do bypasses have?

Which valve is frequently used in heat pumps?

Which valve is commonly installed between the suction line and the compressor inlet to prevent compressor overloading?

what prevents high pressure vapor and refrigerant oil from backing up into the evap during off cycles?