VICKERS RV11 12 C 0 50/

Refuse haulers are one of the primary applications this valve was built around, along with harvesters and general mobile and industrial equipment. It handles up to 300 liters per minute at 80 USgpm and is rated to 350 bar or 5000 psi, so it holds up well under the kind of demanding cycles you see in that kind of work. The spool-style design keeps things compact without giving up flexibility in how it regulates pressure.

Use-case-first, this RV11 series pressure control valve is listed as suitable for harvesters, so it should be compatible with your cotton picker's hydraulic system, assuming the pressure and flow rate requirements are met. This valve is rated to 350 bar (5000 psi) and 300 L/min (80 USgpm), with a flow rate of 190 liters per minute.