Rexroth DB20 Manifold Installation Pilot Operated Pressure Relief Valve

Model: DB20 series-112059
Place of Origin: Zhejiang,China (Mainland)
Power: Hydraulic
Standard or Nonstandard: Standard
Pressure: High Pressure
Structure: Control
Material: Casting
Temperature of Media: Medium Temperature
Media: Oil
Brand Name: EGMEC
Product description:: Rexroth DB20, size20mm pilot operated pressure relief valve, manifold installation
Subplate standard:: G408/01(G3/4), G408/02(M27X2), G409/01(G1), G409/02(M33X2)
Max. inlet X, P, A, B port operation pressure:: 315Bar / 4567.50PSI
Max. outlet T port operation pressure:: 280Bar /4060PSI
Max. operation pressure Y port:: 280Bar / 4060PSI
Four presetting pressure stages:: 50bar, 100bar, 200bar, 315bar
Max. flow rate:: 500L/min.
Installation bolts:: Metric ISO 4762- M16X50 Threaded, Hex socket cap, Class: 10.9 (4 pcs)
Working temperature:: -30/+80℃ of NBR seals and -20/+80℃ of FPM seals
Recommended medium filtration:: ISO 4406 (C class) 20/18/15 standard, or class9 NAS 1638

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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:30.0~50.0 USDProduction Capacity:10,000pcs.
Trade Term:FOBPacking:Standard packing for...
Payment Terms:L/C, D/P, D/A, T/T, WUDelivery Date:15-30days and upon...
Min. Order:200 Set/Sets
Means of Transport:Express, Ocean, Air, Land

The Rexroth DB20 manifold installation pilot operated pressure relief valve can be an adjustment while operation or presetting pressure, because the differential pressure value of pressure oil flows though the orifice is not too large, the main spool just needs a little rigid spring; the effect in the pilot valve on the fluid pressure multiplied by the area of the valve spool is regulator spring force of the pilot valve spring, due to the pilot valve spool is generally cone shape seat, the pressure receiving area is smallso with a less high spring stiffness can be adjusted to a higher opening pressure regulating pilot valve spring with screws and the relief pressure can be adjusted by a pilot operated pressure relief valve.
Rexroth DB20 Manifold Installation Pilot Operated Pressure Relief Valve
Rexroth DB20 Manifold Installation Pilot Operated Pressure Relief Valve

The Rexroth DB20 manifold installation pilot operated pressure relief valve has a remote control port K, if the pipeline of the K port connects other remote relief valve (The structure of the remote relief valve and relief valve pilot control part of the same), adjusting the spring force of the remote relief valve can adjust he hydraulic pressure of the upper end of the relief valve main spool and achieve as remote regulator function. However, the remote relief valve can adjust the maximum pressure must not exceed own pilot valve to adjust the pressure relief valve.
When the K port connects the oil tank through the two -way valve, the pressure of the upper end of the main spool is close to zero, the main spool moved to the highest position, the valve opening is very large. Because the main valve spring is relatively soft, when the pressure relief valve P port at a low pressure, the system of fluid under low pressure through the relief valve into the tank, to achieve unloading system pressure.
Rexroth DB20 Manifold Installation Pilot Operated Pressure Relief Valve
Rexroth DB20 Manifold Installation Pilot Operated Pressure Relief Valve
Rexroth DB20 manifold installation pilot operated pressure relief valve Figuration Drawing:
Rexroth DB20 Manifold Installation Pilot Operated Pressure Relief Valve

Category: Rexroth Pressure Relief Valves