Do you have air valves that sometimes refuse to shift after they sat idle overnight or over a weekend?
Consider the Mac Advantage: The dynamic "D"-seals found in Mac Valves provide a wiping action each time the valve shifts. This means that contaminants from the compressed air supply are wiped off the internal surfaces of the valve before they have a chance to build up, ensuring smooth, consistent shifting and long life. Mac's unique, case-hardened "D"-seals outlast and outperform the standard O-rings used in other directional control valves.
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