The Uflex hydraulic bypass kit for is suitable for 12mm copper tube and contains the following components:
1x Nickel Plated Brass Lever Ball Valve with 1/2" BSP Female Ports (1-71701)
4x Brass Male Stud Coupling 12mm x 1/2" BSP Taper (1-25330)
4x Brass Barrel Olive with 12mm OD (1-26039/1)
2x Brass Equal Nipple 1/2" BSP Male (407603)
2x Brass Equal Tee Fitting 1/2" BSP Female (407103)