AquaMatic V42B-0100-40021 – 3/4 Inch Normally Open – EC Solenoid – FKM/EP/EP

In many automated water systems, maintaining flow as the default state is critical, especially where interruption can disrupt upstream or downstream processes. The AqMatic AquaMatic V42B-0100-40021 is built for exactly that scenario, operating as a normally open diaphragm valve that allows continuous flow until actuated.

This 3/4 inch NPT valve uses an energize-to-close (EC) solenoid configuration, applying control pressure to shut the valve when needed. Inside the valve, the diaphragm separates the control chamber from the flow stream, allowing precise actuation without exposing internal components to line media. The V42 series y-pattern design supports higher flow rates with lower pressure loss, making it well suited for systems where efficiency and responsiveness matter.

Configured with an FKM diaphragm and EP seals and discs, this valve is designed for compatibility with a wider range of fluids and operating conditions compared to standard Buna configurations. The inclusion of drilled and tapped bosses allows for additional control customization, making this unit a strong fit for systems that require solenoid-driven control with flexibility for integration.

This configuration is commonly used in automated process water systems that rely on 48 series stagers for valve sequencing, along with chemical handling and industrial applications where normally open operation with solenoid override is required.

In automated systems, these valves are typically managed through stager controllers that coordinate valve sequencing across multiple process stages.