Sun Hydraulics offers cartridge and manifold hydraulic valves in a variety of configurations, including sequence, relief, reducing, pilot control, flow divider, directional, subplate, sandwich, line mount, motor mount, etc. Relief cartridges feature 2-4 ports, five size configurations, functional interchangeability, and a variety of mounting options. These cartridges can handle pressures up to 6000 PSI and flow rates up to 200 GPM.

Gulf Controls Company distributes hydraulic valves and other motion control products. They stock directional control, flow control, pressure control, cartridge, and other valves made by an array of manufacruters, including Bosch Rexroth, Bucher, Hydac, Hydraforce, Parker, Prince, and Sun Hydraulics.

AC Hydraulics both sells and services all major brands of hydraulic pumps, motors, and valves. These valves are supplied from the following manufacturers: Rexroth, Sundstrand, CharLynn, Danfoss, Vickers, Grecian, Caterpillar, etc.