Festo VPPM-6F-L-1-F-0L2H-A4P-C1 Proportional Valve. This device from Festo is a proportional valve that modulates pneumatic flow in direct proportion to the input signal. The model name VPPM-6F-L-1-F-0L2H-A4P-C1 uniquely identifies this valve within Festo's VPPM family.
