DV hydraulically pilot-operated - 12 Pages

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DV hydraulically pilot-operated
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Catalog excerpts

Pressure Valves hydraulically pilot-operated

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Description The DV pressure valves are hydraulically pilot-controlled valves. They comprise a main valve and one or several pilot-controlled valves. The modular design permits using different pilot control valves which means a multitude of functions can be implemented. Along with pressure limiting and pressure control functions, this also includes special solutions such as pressure range switching valves and valves with electric relief. Typical application areas are oil hydraulics and lubrication technology. Product Characteristics • Pilot-controlled pressure valves for large volume flows of up...

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DV B Pressure Relief Valve Circuit Symbols T Control oil: internal drainage Control oil: external drainage (Y) Option with directional valve The DV B pressure relief valve is also available on request with an additional 2/2-directional valve (e.g. for depressurized circulation). The directional valve here is available as an open de-energised or closed de-energised version. KRACHT GmbH · Gewerbestr. 20 · 58791 Werdohl, Germany · fon +49(0)23 92 / 935-0 · fax +49(0)23 92 / 935 209 · mail info@kracht.eu · web www.kracht.eu

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DV S Pressure Stage Control Valve The pressure stage control valve is a pilot-controlled pressure relief valve with two parallel switched pilotcontrol valves which can be set to different pressures. The basic setup corresponds to the DV B pressure relief valve. The pressure stage control valve has an integrated 2/2 directional valve in addition. It is used to switch the low pressure stage (upstream pressure) on and off. The magnetic valve here is available as an open de-energised or closed de-energised design. The control oil drainage here can also be implemented internally or externally. A typical...

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DV R Pressure Control Valve The pressure control valve is a pilot-controlled pressure relief valve with external hydraulic triggering. It facilitates controlling a system pressure independent of the pressure losses between the valve and the point of the external control-oil tap. To accomplish that the pressure preset on the adjusting spindle on the connection (Z) is kept constant. In addition, the valve is furnished with a permanently set maximum pressure relief (set-to-operate pressure = 9 bar). A typical application field is the pressure control of lubrication oil circuits in diesel engines. Circuit...

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Technical Datas General Characteristics Design Seat valve, hydraulically pilot controlled Fixation type Line connection Mounting position Mechanical, setscrew Housing material Seal material Pressure fluids – Hydraulic fluids as per DIN 51524/25 – Marine fuels as per DIN ISO 8217 – Motor and gearing oils – bio-oils of type “HEES“ (Others on request) Hydraulic characteristics Nominal size Nominal pressure Viscosity (Others on request) Media temperature (FKM) Ambient temperature Set Pressure Range Function 3… 25 8… 70 (without maximum pressure relief) 15… 140 (without maximum pressure relief) Pressure...

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Type Key Ordering example Y A - NC24D Magnetic valve (only for S pressure stage control valve function and for B pressure relief valve function) NC = Closed de-energised (NO = open de-energised) 24 Supply voltage 24 V DC D Valve plug as per DIN 43650 / ISO 440 Design A Standard design B Valve cover rotated 180° Control-oil drainage Y External J Internal Pressure stage See technical data Connection F SAE flange (SAE J518, Code 61) Material 2 Spheroidal cast iron design (EN-GJS-400-15) Seal material F FKM Nominal size 50 80 Function B Pressure relief valve R Pressure control valve S Pressure stage...

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p-Q Characteristic Curves (Viscosity = 34 mm2/s) Flow rate Q [l/min] Flow rate Q [l/min] KRACHT GmbH · Gewerbestr. 20 · 58791 Werdohl, Germany · fon +49(0)23 92 / 935-0 · fax +49(0)23 92 / 935 209 · mail info@kracht.eu · web www.kracht

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Dimensions DV . B Pressure Relief Valve (in mm)) Connections (M), (X), Y: G¼ Connections P and T are dimensionally identical KRACHT GmbH · Gewerbestr. 20 · 58791 Werdohl, Germany · fon +49(0)23 92 / 935-0 · fax +49(0)23 92 / 935 209 · mail info@kracht.eu · web www.krac

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Dimensions DV . R Pressure Control Valve (in mm)) Connections (M), (X), Y: G¼ Connections P and T are dimensionally identical KRACHT GmbH · Gewerbestr. 20 · 58791 Werdohl, Germany · fon +49(0)23 92 / 935-0 · fax +49(0)23 92 / 935 209 · mail info@kracht.eu · web www.k

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Dimensions DV . S Pressure Stage Control Valve (in mm)) Nominal size Connections (M), (X), Y: G¼ Connections P and T are dimensionally identical * Dimension R: stands back 13 mm behind the edge of the object pK = Coupling compression (high pressure setting) pK,v = Coupling supply pressure (low pressure setting) KRACHT GmbH · Gewerbestr. 20 · 58791 Werdohl, Germany · fon +49(0)23 92 / 935-0 · fax +49(0)23 92 / 935 209 · mail info@kracht.eu · web www.krach

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Product Portfolio Gear Pumps Flow Measurement Gear pumps for lubricating oil supply equipment, low pressure filling and feed systems, dosing and mixing systems. Gear, turbine and screw type flow meters and electronics for volume and flow metering technology in hydraulics, processing and laquering technology. Industrial Hydraulics / Test Bench Construction Mobile Hydraulics Single and multistage high pressure gear pumps, hydraulic motors and valves for construction machinery, vehicle-mounted machines. Cetop directional control and proportional valves, hydraulic cylinders, pressure, quantity and...

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