The Pettinaroli FILTERBALL valve is an on-off ball valve containing an interchangeable cylindrical strainer which is easy to inspect and remove for normal maintenance operations. It serves as a reliable alternative to the conventional Y-strainer.

A single valve therefore has two important functions:
- perfect sealing of the ball valves
- careful filtering of the fluid, so that their great reliability protects all the components in the plant.

Compared with the traditional use of two components, apart from the obvious advantages in terms of cost, installation and space, the FILTERBALL® valve means much smaller load losses, which virtually coincide with those of the filter only.