Hayward TBH-Z Sodium Hypochlorite Ball Valves

Sodium hypochlorite (NaOCl) is widely used for water disinfection, surface sterilization, and odor control. However, standard ball valves often fail prematurely in this service due to off-gassing. As NaOCl decays, it releases oxygen gas and forms salt crystals that wear against the valve stem seals, eventually causing leakage.

The TBH-Z “Z-Ball” Solution

The Hayward TBH-Z series (Z-Ball) is specifically engineered for sodium hypochlorite applications. It features a "drilled diverting ball" that allows oxygen gas to vent to the pressure side of the system. This keeps the inner surfaces wet, significantly reducing crystallization and minimizing wear on the stem seals.

Key Features

• Drilled diverting ball for gas venting in NaOCl service
• Reduces crystallization and stem seal wear
• Available in PVC and CPVC body materials
• FKM (Fluorocarbon) seals standard
• Sizes ½" to 6" (6" uses 4" body with 6" flanges)
• Socket, threaded, or flanged connections (6" flanged only)
• ISO 5211 mounting pad for easy actuation
• Can be supplied actuator-ready or factory assembled & tested
• Sodium Hypochlorite Ball Valve Specifications

Actuation Options

TBH-Z valves can be automated with electric or pneumatic actuators. When ordered together with an actuator, the assembly is provided at no extra charge (mounted, aligned, and tested). We can also supply the valve “actuator-ready” with the appropriate shaft coupling (9mm, 11mm, or 14mm) if you already have an actuator.

Applications

• Water disinfection systems
• Swimming pool and spa chemical feed
• Wastewater treatment
• Industrial bleaching and sterilization processes
• Odor control systems

Need Help?

If you’re experiencing issues with standard ball valves in sodium hypochlorite service, the TBH-Z Z-Ball is often the best long-term solution. Contact us for sizing assistance or to discuss actuation options.