The Warrick 3E4A is a 4-probe electrode fitting engineered for high-accuracy liquid level control in demanding industrial environments. Constructed from a rugged cast iron body and featuring a die-cast aluminum epoxy-coated terminal housing, this 2-1/2" NPT threaded fitting is built to handle pressure-tight applications up to 125 psig at 353°F. This conductivity-based level sensor fitting is optimized for vertical installation in boiler feed systems, surge tanks, and open or closed vessels containing water or diluted corrosive liquids. Designed for seamless integration with 3R rigid or 3W wire-suspended electrodes, it ensures reliable multi-level detection—such as high-level, low-level, and makeup valve control—when paired with Warrick Series 16 liquid level controllers. The 3E4A provides a secure, leak-proof electrical interface that translates probe conductivity into precise control signals, making it an essential component for contractors managing commercial HVACR and process water systems. Key Benefits Multi-Probe Capability: Accommodates up to four 3R or 3W electrodes for versatile differential or single-level monitoring in a single 2.5-inch NPT penetration. Industrial Construction: The cast iron fitting body and Teflon insulation provide superior chemical resistance and thermal stability in high-temperature environments. Pressure Integrity: Engineered for pressure-tight assemblies, rated for service environments reaching 125 psig, ensuring safe operation in pressurized vessels. Enhanced Protection: Includes an epoxy-coated aluminum housing to protect electrical terminals from moisture and environmental contaminants. Common Questions Which electrodes are compatible with the 3E4A? This fitting is designed specifically for 3R rigid electrodes or 3W wire-suspended electrodes. Ensure electrodes are sized correctly for your tank depth. Can this be mounted horizontally? No, for accurate liquid level control and proper probe orientation, the 3E4A must be installed in a vertical, top-down configuration. How do I prevent false readings or "over-sensing"? Use #14 or #16 AWG wire (MTW or THHN) and ensure the sensitivity of your Warrick control relay matches the conductivity of the liquid. For long 10-foot rigid probes, internal spacers are recommended to prevent probe contact. 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.
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