Solenoid Liquid Valve

The Liquid-Line Solenoid Valve holds refrigerant in the liquid line when the system is not running. DESCRIPTION AND USAGE. The liquid-line solenoid valve closes when the thermostat demand is satisfied to prevent liquid refrigerant migration. This device is for use in long-line applications.

What are the main functions of a solenoid valve in liquid line?

It is used to control the flow of liquids or gases in a positive, fully-closed or fully-open mode. The valve is commonly used to replace a manual valve or where remote control is desirable. A solenoid is operated by opening and closing an orifice in a valve body that permits or prevents flow through the valve.

How does a solenoid water valve work?

Solenoid valves consist of a coil, plunger and sleeve assembly. In normally closed valves, a plunger return spring holds the plunger against the orifice and prevents flow. Once the solenoid coil is energized, the resultant magnetic field raises the plunger, enabling flow.

Can solenoid valves be used with gases or liquids?

A solenoid valve is used to control the flow of a fluid – including both gases and liquids – through a pipe.

Where do you put a liquid solenoid valve?

Solenoid valve must be mounted with coil above valve body (see Fig. 2). Arrow on valve body must point toward outdoor unit. NOTE: When solenoid valve is de--energized (closed), refrigerant flow will be stopped only in the direction of the flow arrow on the valve body.

Where is the liquid line solenoid valve?

The solenoid is in the liquid line near the air handler inside, so by opening the valve, the suction pressure increases, the compressor turns on, and when it closes, the compressor pumps down and shuts off.

How does a solenoid work?

A solenoid works by producing an electromagnetic field around a movable core, called an armature. When compelled to move by the electromagnetic field, the motion of that armature opens and closes valves or switches and turns electrical energy into mechanical motion and force.

What is the purpose of a solenoid?

A solenoid is a device comprised of a coil of wire, the housing and a moveable plunger (armature). When an electrical current is introduced, a magnetic field forms around the coil which draws the plunger in. More simply, a solenoid converts electrical energy into mechanical work.

What controls the solenoid valve?

A solenoid control valve has two main components: a solenoid on top and the valve system on the bottom. The electromagnetism caused by currents moves the plunger either up or down to pinch and control the flow. A solenoid control valve is either “normally closed” or “normally open.”

Why do solenoid valves fail?

Solenoid coil failure can be caused by a number of factors. Applying an incorrect voltage to the coil will cause it to fail and may cause the coil to burn out. Electrical surges or spikes may also damage the coil. Burnt out coils cannot be repaired and will need to be replaced.

What are the types of solenoid valves?

Different Types of Solenoid Valves

• Direct Acting Solenoid Valve.
• Indirect Acting (pilot operated) Solenoid Valve. ...
• Normally Closed or Normally Open. ...
• 2/2-Way (On-Off) ...
• 3/2-Way (Sol/Spring) ...
• 5/2-Way (Sol/Spring or Sol/Sol) ...
• 5/3-Way (Sol/Sol – APB or Pressure Held)

How do I know if my solenoid valve is working?

If there is a magnet in the presence the coil is good otherwise it is bad and you need to change a

Can water solenoid valves be used for air?

A solenoid valve is an electromechanically operated valve component that's used to control the rate of flow in fluid or air-powered mechanical systems. They are quite often referred to simply as 'solenoids' and used in many applications for the fluid control of water, air, oil or gas.

What is the difference between a 2 way and 3 way solenoid valve?

What is the difference between a 2 way and 3 way valve? A 2-way valve is any type of valve with two ports: an inlet and an outlet port. A 3-way valve has three ports within the valve body which are used as inlet, outlet, and exhaust.

How do I know what solenoid valve I need?

To determine the optimal size for your solenoid valve, you need to know the flow rate, which allows you to determine the flow factor (kv). The flow factor is a theoretical value that indicates the volume of water at room temperature that flows through the solenoid valve with a pressure drop of 1 bar for one minute.

When should a solenoid valve be installed?

The best way to install the valve is with the coil facing upward, typically at 90 degrees of the valve body (see Figure 3). This ensures that the armature tube points upwards, thus reducing the risk of any sediments in the media falling into the tube and restricting the armature movement.

What happens if a liquid line solenoid valve is installed backwards?

The SV2 solenoid valve must be installed with the arrow on the valve body in the direction of flow through the valve. If the valve Is backwards, the flow will not be stopped when the valve is electrically de-energized.

What does a solenoid do in a refrigeration system?

Solenoid valves play an important role in refrigeration and air conditioning systems by controlling the flow of refrigerants. The base function of these valves is to turn the refrigerant flow on and off and thus ensure system performance.

What is the purpose of a liquid receiver?

A common accessory used on many refrigeration systems is the liquid receiver. It is basically a storage vessel designed to hold excess refrigerant not in circulation.

How do you reset a solenoid valve?

Manual Reset Solenoid Valves This is what is known as Manual Reset. To cause the valve to change from its rest state, the coil must be energised and the lever or knob pulled to the fully open position. If the valve is energised without the manual intervention, it will not open.