The ROTOFLUX unions model M, thanks to the special design of the seals and the ground, hardened and lapped, surface of the rotor, may operate with low friction and wear, at low rotation speed with high fluid pressure, even for long time.
Also they may remain inactive for long periods without seizing. An antirotation pin is provide to prevent the rotation; stop it with a slack slot.
Avoid to operate the union under pressure surges, and at the max suggested operating limits, without consulting ROTOFLUX’s customer service.