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Adding "Float" feature to a rear-mount snow plow

Adding "Float" feature to a rear-mount snow plow

Adding "Float" feature to a rear-mount snow plow

(OP)
This is probably a very simple question for many of you.  We are building two back blades for snow plowing.  Our hydraulic circuit is very simple, consisting of a double-acting 12VDC power unit and cylinder.  This gives us power up/down. Any suggestions for circuit design to add a "float" mode, so we will have power up, gravity down and power down?   

RE: Adding "Float" feature to a rear-mount snow plow

It can be easily done, several industrial or mobile hydraulic equipment manufacturers offer valves set up this way.  Good luck, Maytag

RE: Adding "Float" feature to a rear-mount snow plow

See if Brand Hydraulics will provide a TS1120 single spool 4-way valve with a four position spool.  The fourth position being the float position.
http://www.brand-hyd.com/ts/ts-info.htm

Ted

RE: Adding "Float" feature to a rear-mount snow plow

Can you put a chain connection between the lift and the cylinder, like done on front mounted plows?  simpler

RE: Adding "Float" feature to a rear-mount snow plow

(OP)
The chain is not an option, as it wouldn't allow for down pressure.  Thank you for the link to Brand's website. I didn't mention the last requirement of the valving being 12VDC solenoid.  We would like the entire power unit to be self-contained and easily removable from the truck.  This leaves us with electric valves with just wiring going to the cab, no hydraulic hoses.  Thanks again for the help!

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