The 1 1/4" 850-QT-FZ DC from Watts Regulator Company is a high-performance pressure regulator designed for efficient flow control in various applications. This model features durable construction with a robust finish, ensuring longevity and reliability. It operates effectively under a wide range of pressures, making it suitable for both residential and commercial systems. The compact dimensions allow for easy installation in tight spaces, while its compliance with industry standards guarantees safety and performance. Ideal for HVAC systems, this regulator is compatible with various piping interfaces, including NPT and ANSI, ensuring seamless integration into existing setups.