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Industrial Durability: Rugged ASTM A126 Class B cast iron construction for long-term reliability in utility and industrial settings
Field-Replaceable Components: The internal timing mechanism and terminal board can be interchanged in the field
Is this 5-ton TXV compatible with older R-22 systems
allowing for accurate air temperature sensing within terminal units while the main control body remains accessible for adjustment
Precise Changeover: Tight internal tolerances minimize refrigerant leakage during the transition between heating and cooling stages
Belimo CQKB24-SR-LL Actuator R-134A Industrial Durability: Rugged ASTM A126The Belimo CQKB24 SR LL is a specialized electronic fail safe actuator designed for ZoneTight zone valves, delivering precise control in hydronic systems. Operating on a 24V AC DC power supply, it utilizes a proportional 2 10VDC or 4 20mA control signal to provide modulating performance. This model features a normally open (N O) fail safe position, ensuring the valve returns to its de energized state during power loss using low maintenance capacitor