Advanced Fluid Power, Inc. 5780 I-10 Industrial Parkway , Theodore , Alabama 36582 USA About Solutions products Downloads Companies Advanced Fluid Power, Inc. Products Manual Operated Air Valves Manual Operated Air Valves From Pneumatic Control Valve 0 Share Spring Centered or Detent 4 Way Manually Operated sizes 1/4' to 1' Valves. Most popular related searches valve operator Customer reviews No reviews were found for Manual Operated Air Valves. Be the first to review! Add your review Publish your review Great! review successfully added!