Grainger distributes a variety of hydraulic valves, such as relief, pressure contro and split flow valves. Hydraulic valve models include the Prince RD1850H, with a max flow 16 GPM and pressure range of 1,000 to 2,500 psi, and the Vickers CS-03-B50, with a max flow of 45 GPM and pressure range of 125 to 1,000.

HydraForce offers hydraulic cartridge valves and electro-hydraulic control systems. Solenoid on/off valves come in a variety of configurations (from 2-way up to 6-way, poppet-type or spool-type, etc.), as do the directional valves, which include guided check valves, load shuttle valves, and piloted 2-, 3-, and 4-way spool valves.

Innovative Pressure Technologies specializes in high pressure hydraulic valves. Their ball valves are rated from 10,000 to 20,000 psi, while their coned and threaded valves (i.e., needle and check valves) can withstand 20,000 to 60,000 psi. The company's floating ball valves come as standard or Trunion, both of which accommodate port sizes 0.1875" to 0.5" and three mounting options. The needle valves, which are used in instrument isolation, venting, and hydraulic applications, come in six body styles and can be manufactured to meet NACE MR-01-75 and American Petroleum Institute standards. Lastly, the check valves are made in two styles: ball seat poppet (metal-to-metal seat) or soft seat poppet (O-ring seal made of nitrile or other materials); they are appropriate for fluid handling and research.

Sun Hydraulics has developed several standard valve packages, including a line mount, sandwich, and Solenoid operated assembly cross references, and is also capable of custom-engineering valve packages calls "valvepaks." The valvepaks are backed by Sun's screw-in hydraulic cartridge valves, and their manifolds are manufactured in either T-6061 aluminum (3,000 psi) or 65-45-12 ductile iron (5,000 psi); they can also accommodate up to 30+ individual cartridge valves. These screw-in cartridge valves are a trademark of the company; they are available in up to five sizes/capacities, and can handle flows up to 400 gallons per minute and pressures up to 5,000 psi.

Brand Hydraulics offers a variety of hydraulic valves, including 4-way directional control valves with a hydraulic kick out, mono-block directional control valves with an auto-cycle hydraulic kick out, and adjustable hydraulic relief valves.

Bucher has a wide array of hydraulic valves.Types include safety relief, flow preventing, directional spool, and direction seat hydraulic valves.

Cross Manufacturing produces several hydraulic valves. Relief valves come in Model RC (a dual relief, differential poppet style for cylinders or motors, that handles up to 3,000 psi and 30 GPM), Model RD (hydraulically dampened differential poppet-style, 3,000 psi, 30 GPM), and Model RV (pilot operated, up to 3,000 psi and 40 GPM). There are five models of directional control valves, including the Model SS (up to 3,000 psi and 9 GPM), Model AD (3,000 psi, 15 GPM), and Model BA (1 to 3 spool valve, up to 2,500 psi and 30 GPM). The company also manufactures six selector valves, which can support between 3,000 and 5,000 psi and 20 to 50 GPM.

Prince Manufacturing specializes in the production of hydraulic equipment, including stack valves, mono-block valves, loader valves, relief valves, and flow control valves. Within their three models of stack valves, they can handle up to either 12 or 20 GPM, and 3,000 or 3,500 psi. The company offers over a half-dozen mono-block directional control valve models; the DS Double Selector Valve, for example, has a knob or lever handle and is rated to 40 GPM and 2,500 psi. The three types of loader valves come two spool, with a standard fourth position float and fourth position regen; they each handle 3,000 psi and between 10 and 14 GPM.  Prince also manufactures three models of relief valves and nine models of flow control valves.

Westfield Hydraulics develops, engineers, and produces many electro-mechanical devices and fluid power assemblies. Among their offerings are thrust reverser valves, steering valves, hydraulic Solenoid valves, multi-position hydraulic Solenoid valves, and check valves. The company can also manufacture customer-designed valves and related products.

Atos Electrohydraulics offers both proportional valves and cartridge valves. The proportional pressure valves are suited to support max flows as low as 4 L/min, and as high as 600. The proportional directional valves come standard direct operated, but also can include one or two position transducers. The proportional cartridges, meanwhile, are designed for compensation, relief, or reducing. Finally, there are six cartridge valve options that can provide pressure, flow, or directional control, or on-off active safety functionality.

Northman Fluid Power offers three main types of hydraulic valves. Its hydraulic Solenoid valves are available in sizes D03, D05, D07, D08, and D10; molded plug-in coil and housing, indicator lights, mounting bolts, and AC or DC coils come standard. The modular hydraulic control valves, for mounting between directional valves and subplates or manifols, offer presure and flow control. Lastly, the hydraulic pressure and flow control valves provide relief, sequence, counterbalance, and pressure reduction, and are either threaded or subplate mounted.

Oilgear offers a full range of standard and special function valves, as well as custom-design flexibility. Sizes range from 0.25" to 38", while maximum pressure is 60,000 psi and flow, 26,420 GPM. A number of mounting options are available, as well: manifold, sub-plate, flange, and pipe.

FORCE America sells five valve models. The Add-A-Fold 2010, Add-A-Stack 4020, and Add-A-Stack 2512 valves are all integrated mult-function valves designed to electronically control both cylinders and motors, while the Add-a-Fold 4520 valve is meant to protect against corrosion. Finally, the SCE Spin-A-Veyer valve is a compact electro-proportional control valve designed for spreader applications.

Advanced Hydraulics distributes several major brands of hydraulic valves. Their inventory includes directional control, relief, unloading, check, and circuit saver valves which can be Solenoid operated, manually operated, or air actuated.