ASCO 8210B21 Solenoid Valve

The ASCO 8210B21 is a robust 2-way normally closed solenoid valve designed for high-performance fluid control in demanding HVACR and industrial environments. This pilot operated solenoid valve features a durable brass body and reliable NBR seals, making it ideally suited for general service applications involving air and water. With a 3/8" NPT connection and a 1.16 Cv flow coefficient, it maintains a consistent operating pressure differential of 5 to 125 PSI. Engineered for longevity, the unit includes a 120Vac coil housed in a NEMA 1 enclosure, ensuring stable performance in standard indoor installations. As a veteran-grade ASCO RedHat component, it is built to minimize internal leakage through its resilient seating materials. Whether you are managing process cooling or commercial water systems, this 120V AC solenoid valve provides the precise, dependable cycling required by professional contractors.

• High Flow Efficiency: The 1.16 Cv rating allows for significant volume throughput in a compact 3/8" footprint.
• Rugged Construction: Forged brass body and 305 stainless steel core tube offer superior structural integrity.
• Versatile Media Compatibility: Optimized for air, inert gas, and water service with a wide 5-125 PSI range.
• Proven Reliability: Part of the ASCO 210 Series, known for low internal leakage and long service life in pilot-operated configurations.
• Standardized Integration: Features 120V/60Hz electrical specs and NPT threading for seamless replacement in existing North American systems.

What is the minimum pressure required for this valve to open?
As a pilot-operated valve, the 8210B21 requires a minimum operating pressure differential of 5 PSI to function correctly. It will not operate in gravity-fed or zero-pressure systems.

Can this valve be mounted in any orientation?
While it can technically be mounted in any position, for the longest service life and to prevent sediment buildup in the core tube, it is best practice to mount the solenoid vertically and upright.

Is the coil suitable for outdoor use?
This specific model comes with a NEMA 1 enclosure, which is rated for general purpose indoor use. If your application is exposed to moisture or weather, a RedHat II watertight enclosure (NEMA 4X) would be required.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.