Unox Stainless Steel General Purpose High Pressure Normally Closed Solenoid Valve 0.5–40 Bar

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

A high-pressure solenoid valve is an electromechanical device that controls the flow of pressurized gases or liquids. When an electric signal is applied, the solenoid coil generates a magnetic field that moves the plunger, opening or closing the valve. This allows you to control or stop the flow in a system. These valves operate on AC or DC power and can manage various fluids such as air, gas, fuel, steam, or water. They are available in two-way or three-way designs and consist of a body, sleeve, coil, diaphragm, and plunger.

Applications of Stainless Steel General Purpose High Pressure Solenoid Valves

High-pressure solenoid valves are designed for systems with high line pressures (0.5 – 40 Bar). They are commonly used in industrial automation systems across industries such as chemical, energy, mining, and food processing. These valves provide controlled flow in various piping systems, ensuring fluids or gases are correctly directed and regulated.

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 flow. When electric current is applied to the coil, the plunger moves upward, opening the orifice. The pressurized fluid then quickly flows through the bypass, causing the internal pressure to drop rapidly. This pressure difference allows the diaphragm to overcome the spring force, lifting it and permitting fluid flow, opening the valve. This process occurs very quickly, and the valve is designed for optimal efficiency.

General Specifications

• Seal: PTFE / Viton

• Sleeve: Stainless Steel

• Body: AISI 316 Stainless Steel

• Plunger: Stainless Steel

• Temperature Range: -10 °C to +150 °C

• Coil: Socketed

• Pressure: 0.5 – 40 Bar

Recommendations

• Mount the solenoid 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.

Selection Guidelines

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

• Consider the minimum and maximum pressures in 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