You might look at this link for a relay application, either a TIR or AVR or possibly another item... there are other mfg's of similar type equipment, this is the product I am most familiar with... (I'd look at the TIR due to the inrush to the solenoid -- you might see if the mfg. could provide any guidance) ASCO solenoids for the fuel systems do provide a proof of closure switch You might visit with your local rep or contact them for any additional info.. You don't really need a limit switch for solenoid valve to determine whether it is open or close, unless valve is defective. Energised or deenergized status can be already interpreted as open or close or vice versa.

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