Check the listing for details. 16GPM Log Splitter Pump w/Auto Return Valve, Coupler, and Pump mount. Condition: New. Listed at 229.00 USD. 16 GPM Commercial Duty 2-Stage Hydraulic Pump for Log Splitters New Hydraulic Log Splitter Pump 16 GPM @ 3600RPMShaft: ½”Inlet port: 1”Outlet port: ½” NPT7- 1/4" L with shaft5- 5/8” L without shaft3” across body3 -3/8” across mounting surfaceMinimum 8 HP or larger gas engine, direct drive only, horizontal shaft (can be mounted vertical or horizontal)For use with open center hydraulic systems onlyFirst Stage: 13 GPM @ 650 PSISecond Stage: 3 GPM @ 2500 PSIMaximum pressure: 4000 PSIBolt circle: 2.83in.4 holes spaced 2” on centerMounting hole diameter: .344in.Woodruff key: 1/8in.Rotation is clockwiseFlow rates on the hi-low tandem pumps are 0.256 cu in/rev on the low flow and 0.793 cu in/rev on the high flow pump.This 2 stage pump can give you much faster cycle times and higher possible pressures with a small engine. Excellent for use on log splitters. 85% efficient. Mounting Bracket/Mount for 8-15 Hp Engines Length: 5-1/4"Pump Bolt Circle: 2-3/4", or 2" square. Holes drilled for 5/16" boltEngine Bolt Circle: 5" or 3-1/2" square.Cast Iron construction.Works with Halidex, MTD, Deli and other 11 gpm - 16 gpm pumps.Mounts to Briggs, Honda, Kohler, Subaru 8-15 hp motorsAll Necessary Hardware to Connect the Pump and Engine - This kit comes with the hardware required to connect the pump and the engine - Pump Side Bolts: 4 bolts and 4 nuts LO90 LoveJoy Style 3-Jaw Coupler W/ Rubber Spider & Set Screws - Commercial duty LO90 3-Jaw coupler - Connects pump shaft (1/2" Dia) and engine shaft (1" Dia) - Set screws provided (put removable thread locker on them before installation) Auto-Return Adjustable Detent Log Splitter Valve This valve is a 2-way operation Log Splitter valve- Direction 1: Actuate lever by hand, release it and it returns to neutral. - Direction 2: Actuate lever by hand, release it and it stays in the actuated position (active) until the hydraulic cylinder bottoms out (or otherwise senses a spike in hydraulic pressure), at which time the detent will kick the lever back to the neutral position (inactive)- Single spool, Open center.- Max pressure rating: 4000 psi.- Relief valve set at 3100psi but is adjustable between 1000 psi and 4000 psi- Working ports ½”NPT.- In/Out ports ¾” NPT- Detent Pressure set at 700 psi but is adjustable. (Detent accessed by removing end cap)- Compatible with most log splitters (SpeeCo, MTD, Brave, Swisher etc) but can be used for any DIY hydraulics project