Garlock Reduces Torque of Its PTFE-Lined Valves

摘要

Garlock presents its evolved Butterfly actuators at Valve World in Dusseldorf. Thanks to evolutions in the liner and disc, friction values were reduced to the point where significantly lower torques are required to shut off or throttle the flow. For instance, the torque of the DN80 valve was lowered from 48 Nm to 29 Nm (a reduction of 40 percent). At larger diameters, it was possible to reduce torque even more. For the DN300, now only 274 Nm are needed instead of 520 Nm (a reduction of 47 percent), whereas the DN600 now only needs 2,056 Nm instead of 3.990 Nm (a reduction of 48 percent). These statements are based on extensive measurements -measured dry at +21 C. Thanks to the product refinement, Garlock valves now feature the lowest torques on the market.