What is a solenoid valve?
Definition A solenoid valve is an electromechanical valve commonly used to control the flow of a liquid or gas. There are several types of solenoid valves, but the main one is the pilot, which has a direct function. The most commonly used pilot valves use system line pressure to open and close the valve.
While direct solenoid valves operate, they directly open or close the main valve, which is the only flow path in the valve. These valves are used in systems that require low flow capacity or programs with a low pressure difference at the valve inlet.
How the solenoid valve works by controlling the flow of liquids or gases in the positive state is completely closed or completely open. They are often used to replace manual valves or remote controls. The function of the solenoid valve is to open or close a valve inside the valve, which also allows or prevents the passage of the valve. A piston opens and closes by rising or falling inside the tube by energizing the coil.
Solenoid valves include a coil, piston and body. In conventional closed valves, the return spring holds the piston against the wall and prevents flow. When the coil receives energy, the magnetic field generated by the piston enables it to increase the current. When the coil receives energy and the valve is open, the piston in the valve is immersed, which in turn prevents flow.
Why use a solenoid valve?
For most flow control applications, to control fluids in the system, it is necessary to establish or stop the flow in the process. An electric solenoid valve is usually used for this purpose. Solenoid valves can be located in remote locations and are easily controlled by simple solenoid switches.
Where are solenoid valves used?
Solenoid applications include a wide range of industrial settings, including general shut-off controls, process control loops, process control systems, and various main equipment applications.
Solenoid valves in various sections, including:
Drinking water purifier
Gray and black water purifier
Mechanical and fluid engineering
Cooling, lubrication and dosing
Large heating systems, climate control
Safety engineering and quality control
Water fire protection and extinguishing systems
Transport facilities and tank
Oil and gas burner control
Adjust the gas mixture
Blood analysis tools
Control of cleaning processes
How to replace solenoid valves
For correct and accurate operation of the control, the magnetic valves must be selected according to the specific program. The most important parameters for selecting a solenoid valve are the value of Kv (the value given in cubic meters per hour) and the applied pressure range.
Parker solenoid valve model 156.2
Solenoid valves suitable for steam and high temperature
2/2 way valve – normally closed – with diaphragm pilot function
G = 3/8 “- 1 Connections:
PARKER 156.2 series solenoid valves operate with a diaphragm pilot and require a minimum pressure difference to operate.
They are used for general purposes with fluids such as steam and heated water.
The 156.2 series valves are usually closed.
Working temperature for fluids:
Maximum +160 degrees Celsius
At least -30 degrees Celsius
Maximum ambient temperature:
With “F” class coils + 50 ° C
With “H” class coils + 80 ° C
156.2 series solenoid valves for automatic control of steam and heated water in a wide range of applications such as:
- Ironing machines
- Hospital equipment;
- leather manufacturing
For 156.2 series “F” class valves (155 ° C) in thermoplastic containing 30% glass fiber (types: ZB, YB) and “H” class coils (180 °)
(Celsius) are enclosed and enclosed in thermoplastic plastic containing 40%. Fiberglass (ZH type)
All coils for continuous service, 100% ED
Rated voltage tolerance:
10. For power supply
Coils “Z” and “Y” can be used in ac with a frequency of 50/60 Hz (dual frequency).
The “Z” coils have Faston terminals for DIN 43650A connections with IP65 protection.
The “Y” coil has terminals with x 1,000 mm 2 cable with IP67 protection.
Solenoid valves can be installed in any position without endangering them. However, it is recommended to install them vertically with the coil on the top of the body.
ZB 09 24V / 50-60Hz, 115V / 50-60Hz,
220-230 V / 50-60Hz, 240V / 50-60Hz
YB 09 220-230V / 50-60Hz
ZB 09 220-230V / 50-60Hz, 240V / 50-60Hz
YB 09 220-230V / 50-60Hz
UL Known Marking for Coils:
ZB 09 24V / 60Hz, 110-120V / 60Hz,
208-240V / 60Hz
YB 09 24V / 60Hz, 110-120V / 60Hz,
208-240V / 60Hz
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