Unox Full Bore General Purpose Normally Closed Solenoid Valve (0,5-16 BAR)

What is a Full Bore General Purpose Solenoid Valve?

A full bore general purpose solenoid valve is an electromagnetic valve. It opens and closes by moving an armature around the solenoid coil. The solenoid valve can be controlled by a pilot valve or another system to open or close a passage. Full bore general purpose solenoid valves are typically designed to block water, air, or gas and are used in many industrial applications. They are especially suitable for low-flow applications, and the full bore design allows unrestricted flow when the valve is fully open.

Applications

Full bore general purpose solenoid valves are used in various industrial applications, for example:

• Ventilation systems: to control airflow and open/close air ducts.

• Water plumbing systems: to manage water flow and open/close water channels.

• Automatic irrigation systems: to open irrigation channels, automating the watering process.

• Industrial production lines: to control the passage of products, allowing or preventing flow.

Solenoid valves are manufactured in two types:

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

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

Normally Closed Operation

A normally closed solenoid valve initially allows no fluid passage. When electric current is applied to the coil, the plunger is lifted, opening the orifice. This allows high-pressure fluid to bypass quickly, creating a pressure drop inside the valve. The diaphragm overcomes the spring force and lifts, allowing fluid flow, thereby opening the valve. All of this occurs rapidly, and the valve is designed for optimal performance.

General Specifications

• Seal: PTFE / Viton

• Sleeve: Brass

• Body: Brass

• 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.

Selection Guidelines for Solenoid Valves

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

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

• The fluid type and temperature 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 separate check valve should be installed downstream to prevent reverse flow.

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

Specifications Table