EZ-FLO Ball Valve Coupling Connectors are Schedule 40 PVC fittings that attach the EZ-FLO injection system to irrigation mainlines. The integrated ball valve and barbed tubing port let you control differential pressure and maintain consistent injection across changing flow rates. Robust construction: Schedule 40 PVC body resists corrosion and accepts solvent-weld (socket) connections for standard PVC pipe. Secure tubing connection: 1/4" 304 stainless steel barbed port for the flexible tubing supplied with EZ-FLO systems. Socket x socket design: Slip/ socket connections are designed for gluing into mainline PVC for a leak-resistant fit. Adjustable flow control: Built-in ball valve lets you fine-tune the differential pressure between inlet and outlet to optimize injection. Wide size range: Available in mainline sizes from 3/4" up to 4" with corresponding CBV part numbers for each diameter. Recommended for demanding installs: Use where elevation changes or higher feed rates require extra control; required for high-capacity EZ-FLO mainline units. This coupling is intended for irrigation and fertigation applications. Follow the included installation guide and spec sheet for part selection, dimensions, and installation notes (for example, CBV-100 fits 3/4" and 1" mains). Always observe local plumbing and backflow prevention regulations when installing.