The reinforced elbow of 75 mm diameter with a 2 1/2″ female thread is a fitting for the most demanding pipe runs of public pools and industrial filtration systems, where a standard design is not sufficient.
Wall reinforcement is essential at this diameter, because the pressure and dynamic forces at the point of flow redirection reach values that a standard fitting might not reliably withstand throughout the service life of the installation.
The 2 1/2″ thread corresponds to the standardization of industrial fittings and pumps for public use, so the fitting serves as a direct connection without the need for additional reducing parts.
