Warrick 3B1B Coupling

The Warrick 3B1B Coupling is a 316 stainless steel electrode fitting engineered for high-performance liquid level control in demanding industrial environments. As a professional-grade general purpose top mounting fixture, this unit serves as a direct replacement for 3B1A, providing enhanced corrosion resistance for water and chemical applications. It features a precision-machined 3/8"-18 NPT tank connection and a standard 1/4"-20 female thread probe connection, ensuring a pressure-tight assembly compatible with Series 3R rigid rods or Series 3W wire suspended electrodes. Designed for versatility, the 3B1B is rated for up to 400 psig at 406°F, making it suitable for boiler feed systems, condensate return tanks, and wastewater management. This compact single-probe fitting allows for reliable conductivity-based level sensing without the need for complex mounting modifications in existing 3B series setups.

• 316 Stainless Steel Construction: Offers superior protection against oxidation and chemical degradation in aggressive fluids.
• High-Pressure Capability: Rated for 400 psig at 406°F, ideal for high-temperature boiler water level controls.
• Direct Retrofit Compatibility: Seamlessly replaces legacy 3B1A couplings without requiring pipe thread adjustments.
• Secure Threading: The 1/4"-20 FNPT probe mount ensures a vibration-resistant seal for consistent electrical continuity.
• Compact Footprint: Designed for top mounting in space-constrained vessel headers and manifolds.

Is the Warrick 3B1B compatible with wire-suspended probes?
Yes, this fitting is designed to hold both Series 3R rigid rods and Series 3W/3Y wire suspended electrodes using the internal 1/4"-20 female threads.

Can I use this coupling in potable water applications?
The 316 stainless steel construction is widely used in food-grade and potable water systems, though always verify local plumbing codes for specific conductivity probe fitting requirements.

What is the difference between the 3B1B and the older 3B1A?
The 3B1B is the current production model and a direct drop-in replacement, maintaining the same 3/8"-18 NPT dimensions and mounting profile.

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.