Applied Industrial Technologies offers an array of hydraulic valves and related accessories, including cartridge valves, directional control valves, flow/motion control valves, hydraulic ball valves, pressure control valves, proportional directional valves, and SystemStak valves. Some of the in-line/body ported directional control options are buildable sectional valves, log splitter valves, and Monoblock valves. Hydraulic ball valves are available in a variety of configurations, with connections types such as BSPP and Code-614 bolt flange, materials such as brass, steel, and stainless steel, and several installed options like one-way or two-way, with or without lock, or flat, non-offset handle. Meanwhile, the SystemStak valves are available for pressure control, flow control, and checks. In total, the company offers some 18,000 hydraulic valves and accessories.

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.

Parker Hannifin manufactures hydraulic valves in three families: electrohydraulic valves, industrial valves, and mobile valves. The first family includes proportional directional control valves, proportional pressure valves, servovalves, and other electrohydraulic accessories. The industrial valve family includes ball, check, and needle valves, in addition to directional control, flow control, pressure control, and proportional valves. Available mobile valves are ball valves, check valves, directional control valves, needle valves, pressure control valves, proportional valves, and lanyard valves.

Vescor offers both ball valves and needle valves. The ball valves come medium/heavy duty, 3-way high pressure (up to 4,600 psi), and 3-way high pressure (up to 6,000 psi) with split flange. The Mini Line Series needle valve is appropriate for use with oil, water, and most chemicals in test bench and control panel environments, while the 2000 Series is ideal for applications that require fine metering and shut-off. Lastly, the Tru Micro TMF Series with Color Bands provides metered flow in one direction and free flow in reverse direction, with re-set repeatability within 1%.

Delaware Manufacturing Industries Corp. (DMIC) manufactures high, medium, and low pressure fluid control valves. The company's ball valves are offered in steel, stainless steel, or aluminum construction, and can be custom-made for OEMs. Their check valves allow for up to 10,000 psi, and come in sizes 0.375" to 2". Finally, the flow controls and needle valves are built with Chromaflow color coding for easy repeatability; they are also available with pressure compensation.

HYDAC's lineup of hydraulic valves begins with its high pressure ball valve rated up to 5,800 psi, which comes either standard or split flange direct mount; a low pressure stainless steel ball valve is also available for pressures up to 2,000 psi. In addition, the company manufactures eight models of flow control valves, which each have a phosphate coated steel valve body, an FPM seal, and a slotted control spindle design, on top of individual features such as pressure compensation. Other valves available are hose break valves, shuttle valves, and cartridge valves.

Advanced Fluid Systems carries a variety of valves, such as accumulator control valves by Bosch-Rexroth and Sun Hydraulics, ball valves by DMIC, STAUFF, and Vescor, and check valves by ATOS, Dension Hydraulics, and Snap-tite. Other valve categories offered are directional control, flow control, flow dividers/combiners, and pressure control valves.