These are pilot operated poppet valves with a sealed solenoid. There doesn't seem to be any solenoid burnout. The common denominators are synthetic air line lubrication and electrical power. We are going to try to rule out the lubrication first as this may cause the seals on the spool to...
Are you looking for this as a way to keep the cylinder actuated for long periods? I'm not sure about SMC, but many cylinder companies offer rod locks that will keep the rod extended until the valve actuates the return. Much easier than trying to keep pressure.
The hydraulic cylinder company I use has their cylinders rated as working pressure and max. non-shock pressure. For example, a model X cylinder will have a 5,000 psi working pressure and 8,000 psi max non-shock pressure. In other words, they tested to 8,000 psi, but to maximize the life of the...
We have been having an issue with a particular solenoid air valve failing only during machine start-up. This occurs whether the machine is down 5 minutes or 5 days. The valves fail in groups of 3-10 only upon start-up. When the machine is running these valves outlast the other brands we use...
