Unox Stainless Steel General Purpose Normally Closed Solenoid Valve (0.5–16 BAR)

What is a Stainless Steel General Purpose Normally Closed Solenoid Valve?

A stainless steel general purpose solenoid valve is a mechanical device that operates under the influence of a magnetic field generated around a coil when electric current passes through it. It is commonly used to control the flow of liquids or gases such as water, air, oil, or gas. The valve can be operated via a pilot valve, button, or control system, allowing it to open or close as needed. Solenoid valves are widely used due to their compact size and ease of control.

Applications of Stainless Steel General Purpose Solenoid Valves

Stainless steel general purpose solenoid valves are electromagnetic devices used to control the flow of water, air, oil, or gas. They are applied in various fields, including automotive systems, household appliances, industrial machinery, and systems. For example, they can be used in fertilization systems in engines, or in refrigeration systems in appliances. They are also used in industrial processes and facilities to control liquid and gas flow.

Solenoid valves are manufactured in two types:

• Normally Closed (NC): The valve opens when the coil is energized.

• Normally Open (NO): The valve closes when the coil is energized.

Normally Closed Operation

A normally closed solenoid valve initially prevents fluid passage. When electric current is applied to the coil, the plunger is lifted, opening the orifice. High-pressure fluid then flows quickly through the bypass, causing the internal pressure to drop. This pressure difference allows the diaphragm to overcome the spring force, lifting it and permitting fluid passage, thus opening the valve. All of this occurs rapidly, and the valve is designed for optimal performance.

General Specifications

• Seal: NBR

• Sleeve: Stainless Steel

• Body: AISI 316 Stainless Steel

• Plunger: Stainless Steel

• Temperature Range: -10 °C to +90 °C

• Coil: Socketed

Recommendations

• Mount the coil facing upward.

• Use filters such as strainers upstream of the solenoid valve.

• For high-temperature applications, request high-temperature diaphragm and seal materials when ordering.

Solenoid Valve Selection Guidelines

• Ensure the coil matches the operating voltage (AC/DC) and is protected according to the installation environment.

• Consider the minimum and maximum pressure values of the system when selecting a valve.

• The nature and temperature of the fluid directly affect valve selection.

• Ensure the flow direction matches the arrow on the valve body during installation.

• Solenoid valves do not function as check valves; a check valve should be installed downstream to prevent reverse flow.

• The line where the valve is installed must be free of debris.

Specifications Table