5/3 Proportional Center, Directly Actuated
5/3 Center Check Valve, Pilot, Pneumatic Spring Return
5/3 Series, Direct Proportional, Spring Return
4/3 Center Closed, Direct Proportional, Spring Return
4/3 Center Spring, Direct Proportional, Spring Return
5/3 Center Closed, Pneumatic, Spring Return
5/3 Series, Negative Overlap, Direct Proportional, Spring Return
5/3 Series, Pilot Proportional, Spring Return