The Single Flow Hydraulic Spreader Valve from Buyers Products is compact and easy to install, with a durable aluminum body. It features a built-in on/off control lever, system relief, and pressure compensation. Flow is easy to adjust with a detent knob featuring 11 positive positions. It's rated at 20 GPM and 2000 PSI. The relief cartridge has a standard setting of 1500 PSI.