Every pressure control valve switches (or controls) at a predetermined pressure setting. The switching pressure is generally a variable setting on the valve itself. A change in position of the pressure control valve (i.e. open or closed) occurs either gradually (by control) or suddenly (by switch). Pressure shut-off valves and pressure sequence valves are hydraulic valves with a fixed throttle whereas relief and reducing valves are hydraulic valves with a variable throttle.
The most common types of pressure control valves are the pressure relief valve and the pressure reducing valve. Pressure relief valves control the system pressure by relieving part, or all, of the flow to tank. Pressure reducing valves reduce the pressure supplied to a sub-system of a hydraulic system. Sequence valves are used to direct the flow to a secondary circuit. Unloading valves are used to direct flow to tank at pre-set system pressure.
A hydraulic system can only function - as per requirements - by using valves. Thus, you should always look for the correct type of hydraulic valve to serve your intended purpose. Get advice and suggestions from DTA in order to select the appropriate hydraulic valve, in terms of size and function, that suits your application and your budget.
DTA is serving your industry with the supply of hydraulic parts and hydraulic components for more than 25 years. Since 2010 we have been fully qualified and certified as distributor hydraulics by Parker Hannifin. Together we developed a rapid delivery program for the genuine Denison Hydraulics single and multiple vane pumps. We support industrial and mobile applications and hold a considerable inventory of genuine parts, components and sub-assemblies.
Vane pumps and genuine spare parts in stock; over 25,000 configurations listed in our online pump catalogue!
Currently we can supply over 20,000 pump configurations from stock. All the hydraulic parts and components that we supply are new and genuinely manufactured by the high quality hydraulic manufacturer of your choosing. DTA can be your one-stop-shop and supplies high-quality brands only such as Parker Hannifin (Denison Hydraulics, Olaer, Calzoni, VOAC, Sterling Hydraulics), Bosch Rexroth (Brüninghaus, Eppensteiner, Hägglunds, Hydromatik, Oil-Control), Bucher Hydraulics, Moog, STAR Hydraulics, Hydac and Eaton (Char-Lynn, Eaton Hydraulics, Integrated Hydraulics, Vickers).