3 1 4 2 4 2 1 4 2 1 4 2 3 4 2 1 4 2 3 1 4 2

3 4 2 1 4 2

18: VALVES & REGULATORS 216-535-4848

3-Position, All Ports Blocked - Cylinder Positioning Traditional Configuration

3-Position Center Exhaust A traditional 5/3 center exhaust valve is now replaced by a double 3/2 NC+NC valve module (version with no exhaust check valves). Both cylinder chambers are exhausted and rod and piston are free to move. 3-Position All Ports Blocked A traditional 5/3 all ports blocked valve is now replaced by a double 3/2 NC+NC valve module and a dual P.O. check module that will block the flow to and from the cylinder. Cylinder positioning is more precise. 3-Position Pressure Center A traditional 5/3 pressure center valve is now replaced by a double 3/2 NO+NO valve module. The function is identical.

Dual 3/2 Valves Replace All 3-Position Valves for a Better Performance

At the outputs of a double 3/2 NC + NC valve, the dual P.O. check valve module achieves efficient and stable cylinder positioning. As soon as both lines are exhausted by the main control valve, the two internally piloted check valves close tight. The cylinder is then stabilized. The manual pressure releases may then eventually be used for an adequate machine positioning. 3-Position All Ports Blocked Dual P.O. Check Valve Module Problem: in center position, compact valves are not perfectly sealed - cylinder position cannot be held indefinitely. 1. Cylinder Positioning: Dual P.O. check valve module is plugged into the valve island. 2. Cylinder Positioning: Dual P.O. check valve module is installed close to the cylinder - preferred solution for more accurate positioning.

Using Moduflex Valves - Double 3/2 NC + NC and Dual P.O. Check Valve

Solution : a dual P.O. check module is totally sealed. Double 3/2 NC + NC

Manual Release

Typical 3-Position Valve Applications

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