AirTAC 2L Series: Internally Piloted Normally Closed (NC) Valve

The AirTAC 2L Series is a heavy-duty 2/2-way internally piloted diaphragm solenoid valve. It is designed to control the flow of large volumes of fluid, such as water, air, and oil, with high efficiency. As a Normally Closed (NC) valve, it remains shut when de-energized, preventing flow until the solenoid coil receives power.

Because it is an internally piloted valve, it utilizes the pressure of the fluid media to help lift the diaphragm. This allows the valve to handle high flow rates and large pipe sizes (up to 2") while using a relatively small, energy-efficient solenoid coil. It is a workhorse in industrial automation, water treatment, and large-scale cooling systems.

Key Product Features

• High Flow Capacity: The diaphragm-style structure allows for much larger orifice sizes compared to direct-acting valves, making it ideal for high-volume piping.

• Forged Brass Body: The body is constructed from high-quality brass, offering excellent durability, pressure resistance, and long-term reliability.

• Pilot-Assisted Operation: Requires a minimum differential pressure to function, which ensures a strong, tight seal when closed and a full opening when activated.

• Versatile Fluid Compatibility: Standard NBR seals are suitable for air, water, and oil. For higher temperature requirements, Viton or EPDM seals can often be specified.

• Stable Performance: Designed with a specialized internal bleed hole and spring mechanism to ensure smooth opening and closing cycles without excessive vibration.

• Flexible Electrical Connectivity: Compatible with the standard range of AirTAC coils and DIN connectors, including options with LED status indicators.