Proportional pressure relief valves limit the pressure in a hydraulic circuit and allow. Section 4 oil control cartridge valves cross hydraulics. Rexroth pdf standard types and components are shown in the. Valves for line connections valves for block installation p max 350 bar q max 120 lmin re 25 86011. Dbeta proportional pressure relief valve bosch rexroth usa. Harmonisation of product range rexroth onoff valves. Pressure valves type dbk are pilot operated pressure relief. They are used to limit a system inlet pressure to a specified maximum value. Type db pressure relief valve type db the pressure applied to channel p acts on the main spool 3. Relief valves high pressure relief valve hydraulic. Proportional pressure control valve pdf bosch rexroth offers proven hydraulic proportional and servo control valves for a wide range of industrial manufacturing applications. Export data and price of hydraulic valve rexroth under hs. This feature allows the reduced pressure at port 1 to remain relatively constant under back flow conditions. A typical application would be to provide a controlled lower pressure to a secondary circuit function reducing andor reducingrelieving valves.
Bosch rexroth cartridge pressure relief valve dbds. Pressure control valves of type db are pilot operated pressure relief valves. Proportional pressure relief valve, pilotoperated bosch rexroth ag. Directly operated valves pilot valves for limiting system pressure. View detailed export data, price, monthly trends, major exporting countries, major ports of hydraulic valve rexroth under hs code 8481. Typeexamination tested safety valves according to pressure equipment directive 201468eu 9.
Dbeta proportional pressure relief valves are for high performance applications up to 5 lpm. Pressure valves having a predetermined effect on the operating pressure in a system or a part of a system pressure relief valves, proportionalreliefvalvedbepre29164. A typical application of this is in the supply of hydraulic oil in power steering systems. Proportional flow control valve with integrated pressure. Pressure relief valve, pilot operated bosch rexroth. Pressure control, relief cartridges powered by sun quickprint, your ondemand, customized catalogue solution. Goto product focused delivery times are available only for the quantities and if applicable, the preferred options listed for the product. Dbetx proportional pressure relief valves limit pressure for piloting applications. Data sheet rexroth variable pump a2vk series 1 and 4. Pressure control, relief cartridges sun hydraulics. The appropriate regulations must be taken into account.
These valves can work with pressures up to 420 bar 6000 psi and flows up to 400 lpm 106 gpm in a reliable and compact design. Adjustment types for pressure adjustment, optionally. The valves are closed in their rest position and protect. Pressure is limited by changing current to the proportional solenoid from an external amplifier or internal electronics dbete. Before ordering a design tested pressure relief valve, checks have to be carried out to ensure that at the required response pressure p the maximum permissible. Order spikes can cause temporary extended lead times. Foreword 4 industrial hydraulics bosch rexroth ag overview of type codes and bosch at material numbers isolator valves subplate mounting.
Parkers pilot operated relief valves provide a stable design with low pressure drop meant for continuous duty applications while operating with less hydraulic noise. The valves basically consist of housing 1 with seat 2 and control spool 3. Pressure relief valves shipped worldwide hydraulics online. Bosch rexroth zdb6 and z2db6 pilot operated pressure relief valves have a sandwich plate design. Pressure is limited by changing current to the proportional solenoid from an external amplifier. Download goto hydraulics catalog documentation and resources. A flexible wedge gate valve is shown in the illustration, but other double. Pressure valves of type zdb10d and z2db10d are direct operated pressure relief valves in sandwich plate design.
The proportional flow control valve is a direct operated screwin cartridge valve in spool design with integrated pressure compensator. The system pressure is set via the adjustment type 4. Bushing with hexagon and protective cap rotary knob hand wheel lockable rotary knob. Variable displacement pump a10vg for closed circuits sizes 18. Check valve before damping piston for fast response times. All productszcpezhenchao petrochemical equipment co. Valve assembly without valve assembly 0 builtonpressure 1 relief valve design housed pump g series size 28 107 1 size 12 4 pump type variable pump a2vk size 11,6 cm. If this adjustable maximum value is reached, the pressure relief valve will return the excess flow to the tank. Available for solidworks, inventor, creo, catia, solid edge, autocad, revit and many. Any excessive residual flow is led to the tank or to another actuator via port t.
Generally, the valves consist of housing 1, orifice bush 2, pressure compensator 3 with optional stroke. M4 components kbps ls pressure relief valve rising curve. Ets has over 25 years of sales and service experience with the bosch rexroth group in the u. It is suitable for closed loop applications like position, velocity, and pressure control. They are used to limit the pressure in a hydraulic system. Pa02024092v 14 bspp ab lateral ports, pt rear ports cw relief valve modular sandwich valve stock no. They are used for the limitation of the operating pressure. Z2dbd pressure relief valve bosch rexroth ag, re 25771, edition.
Rexroth relief valve r900345310 with rotary knob, sae4 thd. Ordering size pressure side suction side code m f m f 02 1. Built in solenoid valve for pilot line or low pressure relief valve rj b1015e12. When the pressure at the inlet port 1 reaches the valve setting, the valve starts to open. It regulates the flow proportionally to the input signal in a stepless form from port p to a.
At the same time, pressure is applied to the springloaded side of the main spool 3 and to the ball 8 in the. Pressure trapping referring to figure 3, consider the scenario which accompanies and follows closure of a doubleseated valve. Pressure controlflow controlcheck valves airline hydraulics. High pressure relief valves 7 pressure cutoff, d 7 dg hydraulic control, direct operated 8. Pressure relief valve, pilot operated rexroth bosch rexroth.
Once adjusted, the pressure relief valve opens whenever the pressure goes beyond the value set and allows oil to flow back to the reservoir. Dbet proportional pressure relief valves for piloting applications. Proportional pressure relief valve rexroth bosch rexroth. Rbae directacting relief valve pilot capacity 12 rbab aircontrolled, directacting relief valve pilot capacity. Proportional directional valves, direct operated with electrical. Dbd type relief valves offer line contact sealing for minimal leakage at closure and a full array of pressure capacities are available. The dbd pressure relief valves are direct operated type relief valves. A pressure relief valve is a safety device and is required on all hydraulic systems. Pressure relief valves are a nonadjustable control valve that regulate pressure in a hydraulic system.
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