SOL1B4 is a pilot-operated 2-way solenoid valve with normally closed (NC) operation designed for industrial fluid control in a wide range of applications including autoclaves, cooling systems, watering equipment, fire extinguishing systems, and water jet machinery. The valve features a forged brass body with a magnetic stainless steel plunger and NBR gaskets, operating on 230Vac with 9 VA solenoid power. It is rated for continuous service with electrical insulation class I and temperature class H, offering IP65 protection with VDE-approved coil. The valve operates reliably across a fluid temperature range of -20°C to +90°C and room temperature up to 80°C, making it suitable for both liquid and gas applications in demanding industrial and commercial environments.