As a veteran HVAC technician, I know the value of reliability in high-demand environments. The Johnson Controls JG24B020 Actuator is an OEM 120V N/O Hi Temp Valve Actuator engineered specifically for J Series Electric Zone Valves. Designed to handle the rigorous conditions of saturated steam, chilled water, and hot water applications, this unit is a staple for HVAC zone control in high-rise buildings and complex pumping systems. Its normally open (N/O) configuration ensures fluid flow remains unobstructed until powered, while the spring return mechanism provides a fail-safe close-off when 120VAC is applied. With a high temperature rating supporting fluid temperatures up to 250?F (121?C) and 15 psig steam, this synchronous motor actuator eliminates the need for complex linkage kits. The brass housing and 18-inch wire leads facilitate a straightforward direct-acting installation, ensuring bubble-tight shutoff and precise temperature regulation across diverse hydronic heating and VAV reheat applications. Key Benefits Saturated Steam Compatibility: Rated for up to 15 psig steam, making it ideal for demanding high-temp heat exchangers. Streamlined Installation: Features a quick-removal design that allows for rapid actuator replacement without the need for re-piping or specialized tools. Reliable Spring Return: Proven synchronous motor technology ensures consistent performance and a positive fail-safe position. High Close-Off Pressure: Specifically designed to satisfy the strict requirements of high-pressure pumping systems and commercial HVAC loops. Zero Leakage Performance: Provides bubble-tight shutoff to conserve energy and maintain tight control over zone temperatures. Common Questions Is the JG24B020 compatible with JS Series valve bodies? Yes, the JG24B020 is specifically designed for use with Johnson Controls JS Series valves. It is not intended for use with JT Series valves, which require different actuator configurations. What is the maximum operating fluid temperature for this actuator? This high-temperature actuator is rated for fluid temperatures ranging from 32?F up to 250?F (121?C), accommodating both chilled water and saturated steam systems. Does this unit require a specific mounting orientation? The JG24B020 can be installed in both horizontal and vertical orientations, providing flexibility in tight mechanical closets and radia-vector applications. 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.
