Internally balanced, without the need for a stepped shaft. The O-ring resting on the shaft does not cause wear as there is no axial movement. Appropriate for applications for sticky or high viscosity fluids as its open leaf design generates a shelf cleaning effect. In addition it is suitable for application at moderate pressures and high temperatures (for up 400⁰C please inquire) and very aggressive fluids in chemical and mechanical terms. Very often use in compressors.
d= 16 ÷ 100mm
t= -40 ÷ +200⁰C