JBD:

If you read the actual specs for NEMA 6P classification, they specify TEMPORARY immersion in water of LIMITED DEPTH (1 meter, IIRC). My application involves continuous immersion at 6-7 feet.

Larry:

Actually, the plan is to cut power (using a pair of "ice cube" relays) to both the directional control (spool) valve AND the hydraulic pump starter.

Yes, the relief valve is going to be the backup safety device in case of a switch failure.


[This message has been edited by NJwirenut (edited 06-26-2006).]