Riobel ZOTQ83C 4-Way Thermostatic/Pressure Balance 3/4" Coaxial Complete Valve, Chrome — Bathroom Bathtub & Shower Diverter Valves

The Riobel ZOTQ83C is a 4-way Type T/P valve, meaning it combines thermostatic temperature control with pressure-balance protection in a single 3/4" coaxial cartridge, and it's sold as a complete valve rather than rough-in only. Four-way valves like this are built to run multiple outlets - for example a shower head, hand shower, and body sprays - from one control, letting you direct water to different fixtures without separate diverters.

Thermostatic valves hold water temperature steady even if pressure or flow changes elsewhere in the house (like a toilet flushing), while the pressure-balance function protects against sudden temperature spikes. Finished in chrome, it's designed to pair with matching Riobel trim for a complete shower system.