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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES

2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES
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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 1

2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES DBV, DBM, DBE SERIES ISO 7368 SIZES 16 TO 50 FLOW-OPTIMIZED DESIGN FOR UP TO 420 BAR (6,000 PSI) OPERATING PRESSURE WHAT MOVES YOUR WORLD

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 2

2-way Slip-in Pressure Relief Cartridge Valves Whenever the highest levels of motion control performance and design ﬂexibility are required, you’ll ﬁnd Moog expertise at work. Through collaboration, creativity and world-class technological solutions, we help you overcome your toughest engineering obstacles. Enhance your machine’s performance, and help take your thinking further than you ever thought possible. DBM - Pressure Relief Valve, Bypassed / Soft DBM - Pressure Relief Valve, Unloading Function, This catalog is for users with technical knowledge. To ensure all the necessary...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 3

2-way Slip-in Pressure Relief Cartridge Valves Pilot-operated 2-way slip-in pressure relief cartridge valves are used to protect hydraulic systems against excessively high pressures, and/or for setting and limiting a given system pressure in hydraulic systems. These valves are designed for use in hydraulic manifolds. With a compact design, this product series offers a high power density for high performance hydraulic systems. The valves featured in this catalog are designed for 420 bar (6,000 psi) operation. They are available in sizes 16 to 50 according to ISO 7368. All configurations...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 4

2-way Slip-in Pressure Relief Cartridge Valves DESCRIPTION OF OPERATION Operating Principle for Pressure Relief Function 2-Way Slip-in Pressure Relief Valves are vital components of any hydraulic system, and are used to limit the maximum permissible hydraulic pressure where necessary. 2-Way Slip-in Pressure Relief Cartridge Valve Typical applications include limiting pump and cylinder pressures. The limiting of cylinder pressures not only protects the cylinder from damage, but also enables the reliable limitation of the force applied by the cylinder. The pressure to be limited is applied to...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 5

2-way Slip-in Pressure Relief Cartridge Valves The DBV is a pressure relief valve where the opening (relief) pressure is set via a screw-in pilot valve located in the cover of the DBV. If two or three different opening pressures are needed within the same DBV, additional sandwich plates with screw-in pilot valves can be used. A directional pilot valve then switches between the different pressure settings found in each sandwich plate. For standard applications, a directional spool type valve can be used (0B0, 1B0 or 2B0 pilot function). Applications that require a leak free valve can make...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 6

2-way Slip-in Pressure Relief Cartridge Valves DESCRIPTION OF OPERATION Type DBM – 2-way Pressure Relief Valve with Unloading Function Similar to the DBV, the DBM’s opening (relief) pressure is determined by a screw-in pilot valve found in the cover of the DBM. The difference comes with the use of the directional valve to realize an unloading function. A DBM uses one switching position of the directional valve as an unloading function, allowing the pressure in the system to be discharged. Pressure Relief Valve with Unloading Function A For standard applications, a directional spool type...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 7

2-way Slip-in Pressure Relief Cartridge Valves DESCRIPTION OF OPERATION Type DBM and DBE DBM - Pressure Relief Valve with Soft Unloading Function DBE – 2-way Pressure Relief Valve with Electric Proportional Adjustment The soft unloading function can be realized with a combination of an MC1 directional valve and a pressure relief pilot valve. The opening (relief) pressure of the DBE is controlled via an electrical proportional pilot valve mounted on the cover of the DBV. Due to pilot valve limitations, the maximum operating pressure of the DBE is limited to 350 bar. The integrated flow...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 8

2-way Slip-in Pressure Relief Cartridge Valves DESCRIPTION OF OPERATION Poppet Function Description of Operation AO and EX Poppet Optional Internal Pilot Oil Supply Two different poppet types are available for the pressure relief function: The AO and EX poppets. A standard pressure relief valve receives the pilot oil supply through the X port of the cover interface (order code “X”, external). AO Poppet (Without Shaft Seal) Alternatively, an optional orifice (2) in the cartridge poppet enables an internal pilot oil supply from port A to port C (order code “S”, internal). The AO poppet is...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 9

TECHNICAL DATA 2-way Slip-in Pressure Relief Cartridge Valves 1 Y port pressure will influence the opening pressure. It is recommended that the Y port be exposed to as little pressure as possible, e.g. direct connection to leak oil (“ 0 bar). Pre-set pressure + Y port pressure = opening pressure 2) Maximum flow depends on the particular pressure setting. See the corresponding characteristics curve for details.

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 10

TECHNICAL DATA 2-way Slip-in Pressure Relief Cartridge Valves AO Poppet (1:1) EX Poppet (1:1.07, leakage free) The following diagrams demonstrate the pressure vs. flow curves for different pressure relief valve sizes and poppet types. The relief valves are available in five different pressure ranges (B, E, G, K and L). For each pressure range, the characteristic curves at different pressure settings are shown. To reach optimal pressure relief valve performance, the curves should be as flat as possible. To achieve this, Moog recommends using the lowest possible pressure range available for...

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 11

TECHNICAL DATA 2-way Slip-in Pressure Relief Cartridge Valves Notes:The dashed line corresponds to the maximum permissible flow. a|1 curves measured with pressureless control oil return (Y). Any pressure at Y-port is additional to the pressure setting. Oil temperature 45 °C (113 °F), oil viscosity 32 mm2/s (cSt). 11

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2-WAY SLIP-IN PRESSURE RELIEF CARTRIDGE VALVES - 12

TECHNICAL DATA 2-way Slip-in Pressure Relief Cartridge Valves The dashed line corresponds to the maximum permissible flow. All curves measured with pressureless control oil return (Y). Any pressure at Y-port is additional to the pressure setting. Oil temperature 45 °C (113 °F), oil viscosity 32 mm2/s (cSt). 12

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