25" STD indicates a standard 1-1/4 inch NPT inlet/outlet connection

4-gallon capacity and a butyl/EPDM diaphragm

ensuring stable system performance across varying ambient temperatures

Seamless Integration: Features standard 1/2 inch gas line threading for straightforward installation in existing supply manifolds

which is the specific standard for most terminal unit locking screws and calibration ports

Belimo CQX24-SR Actuator 326058-757 25" STD indicates a standardThe Belimo CQX24 SR Actuator is a robust, non spring return solution designed for precise control in high performance hydronic systems. Operating on 24VAC DC power, this actuator utilizes a 2 10VDC or 4 20mA proportional control signal, providing an adjustable position feedback of 2 10VDC for real time monitoring. Engineered for seamless integration with Belimo ZoneTight zone valves, it features a pressure independent performance profile that ensures