Johnson Controls T-3111-1 Valve Actuator 30067439-890 this is a passive conductivity

this is a passive conductivity probe and is generally compatible with most 24V or 120V AC conductivity-based liquid level controllers

Suitable for commercial and industrial refrigeration applications

The solid core composition is optimized for high moisture removal and effective acid remediation

making it suitable for both freezer and boiler applications

Johnson Controls T-3111-1 Valve Actuator 30067439-890 this is a passive conductivityThe Johnson Controls T 3111 1 Valve Actuator is a heavy duty, proportional action pneumatic thermostat designed for integrated control of steam or water valves in terminal air conditioning units. This direct acting controller features a liquid filled bulb element with a 42 inch capillary, ensuring precise sensing of return air temperatures. Built for rugged field reliability, the T 3111 1 provides seamless valve top mounting for VG7000 Series valves