Pilot Operated Pressure Relief Valve

PRODUCT TYPE:  DBW Pilot Operated Pressure Relief Valve
VALVE SERIES: 10, 20, 30 Series
CONTROL METHOD: Pilot Operated
APPLICATION Hydraulic Machines
CONNECTION TYPE: Subplate Connection
Pilot operated valve 
– With solenoid directional valve
– Four pressure setting
– WE valve pilot operated

DB/DBW Relief Valve PDF

DBW Pilot operated pressure relief valve uses for controlling the system pressure, keeping system pressure in a normal level in order to protect each actuator operation, especially the power actuation like hydraulic motors, hydraulics pumps.

Finotek DBW series of pilot operated pressure relief valve is designed by two parts, the combination of parts of main valve as basic and pilot operated pressure direct relief valve enable to minimize valve pressure adjusting torque force more than by only a direct relief valve, its largely developing the valve characteristics of opening and closing speed.

Valve Ordering Code

Example (Normal code): “FT-DBW 10 B 1 5X/20 EG24NZ5L ”
Explanation As Below:

FT- DB W 10 B   1 5X / 20
(1) (2) (3) (4) (5) (6) (7) (8)
    6E G24 N Z5L      
(9) (10) (11) (12) (13) (14) (15) (16) (17)

(1) Producer code= FT
(2) W= With solenoid valve
  No code= Without solenoid valve
(3) Size= 10; 15; 20; 25 or 30
(4) A= Normal closed
  B= Normal open
(5) No code= Modular mounted
  G= Threaded mounted
(6) 1= Hand wheel adjustment
  2= Screw adjustment and protective cap
(7) 5X= Valve series
(8) 20= Settable pressure up to 20Mpa
  5= Settable pressure up to 5Mpa
  10= Settable pressure up to 10Mpa
  31.5= Settable pressure up to 31.5Mpa
(9) No code= Internally piloted, internally drained
  X= Externally piloted, internally drained
  Y= Internally piloted, externally drained
  XY= Externally piloted, externally drained

(10) No code= Standard
  U= Min. opening pressure
(11) 6E= (Wet-pin) Solenoid with detachable coil
(12) G24= DC voltage 24V
  G12= DC voltage 12V
  W220= AC voltage 220~230V 50/60 Hz
   W110= AC voltage 110V 50/60 Hz
(13) N= With manual override
(14) Z5L= Plug-in connection with indicator lamp
(15) No code= Inch thread (Y port threaded)
   2= Metric thread (Y port threaded)
(16) No code = NBR seals for petroleum oil
  V = FPM seals for phosphate ester
(17) No code = Black Galvanization
  B= Blue Powder Coating

DBW Valve Technical Information

Main Raw Materials: Casting Iron
Power: By hydraulic
Brand: Finotek or OEM
Max. Operation Pressure(T): 31.5Mpa
Max. Operating Pressure(P,A,B): 35Mpa
Max. Flow Rate: 250L/min.
Oil Medium Temperature: -30 to +80(°C)for NBR O-rings

Available Voltaege: DC:12V,24V ; AC:110V,220V
Voltage Tolerance: +10% to -15%
Switching Frequency: DC:15000Times/h; AC:7200Times/h
Oil Medium: Mineral oil as per DIN51 524, VDMA 24 568 or rapeseed oil, Viscosity 10 – 400 CST
Recommended Medium Filtration: ISO 4406 Standard, cleanliness class:20/18/15

DBW Valve Function Symbol


DBW Valve Installation Dimensions


FT-DBW Series High-Pressure Relief Valve To Replace the Following Code:

DBW10A1-52/315Y-6EW230N9K4 DBW10A1-52/3152Y-6EW230N9K4

DBW10A1-52/315-6EG24N9K4 DBW10A1-52/3152-6EG24N9K4

DBW10A1-52/315Y-6EG24N9K4 DBW10A1-52/3152Y-6EG24N9K4

DBW10A2-52/315-6EW230N9K4 DBW10A2-52/3152-6EW230N9K4

DBW10A2-52/315Y-6EW230N9K4 DBW10A2-52/3152Y-6EW230N9K4

DBW10A2-52/315-6EG24N9K4 DBW10A2-52/3152-6EG24N9K4

DBW10B1-52/315-6EW230N9K4 DBW10B1-52/3152-6EW230N9K4

DBW10B1-52/315Y-6EW230N9K4 DBW10B1-52/3152Y-6EW230N9K4

DBW10B1-52/315-6EG24N9K4 DBW10B1-52/3152-6EG24N9K4

DBW10B1-52/315Y-6EG24N9K4 DBW10B1-52/3152Y-6EG24N9K4

DBW10B2-52/315-6EW230N9K4 DBW10B2-52/3152-6EW230N9K4

DBW10B2-52/315Y-6EW230N9K4 DBW10B2-52/3152Y-6EW230N9K4

DBW10B1-52/100-6EG24N9K4 DBW10B1-52/100X-6EG24N9K4

DBW10B1-52/100Y-6EG24N9K4 DBW10B1-52/100XY-6EG24N9K4

DBW10B2-52/100-6EW230N9K4 DBW10B2-52/100X-6EW230N9K4

DBW10B2-52/100Y-6EW230N9K4 DBW10B2-52/100XY-6EW230N9K4

DBW10B2-52/100-6EG24N9K4 DBW10B2-52/100X-6EG24N9K4

DBW10B2-52/100Y-6EG24N9K4 DBW10B2-52/100XY-6EG24N9K4

DBW10B1-52/200-6EW230N9K4 DBW10B1-52/200X-6EW230N9K4

DBW10B1-52/200Y-6EW230N9K4 DBW10B1-52/200XY-6EW230N9K4

DBW10B1-52/200-6EG24N9K4 DBW10B1-52/200X-6EG24N9K4

DBW20A1-52/315-6EG24N9K4 DBW20A1-52/3152-6EG24N9K4

DBW20A1-52/315Y-6EG24N9K4 DBW20A1-52/3152Y-6EG24N9K4

DBW20A2-52/315-6EW230N9K4 DBW20A2-52/3152-6EW230N9K4

DBW20A2-52/315Y-6EW230N9K4 DBW20A2-52/3152Y-6EW230N9K4

DBW20A2-52/315-6EG24N9K4 DBW20A2-52/3152-6EG24N9K4

DBW20A2-52/315Y-6EG24N9K4 DBW20A2-52/3152Y-6EG24N9K4

DBW20B1-52/315Y-6EW230N9K4 DBW20B1-52/3152Y-6EW230N9K4

DBW20B1-52/315-6EG24N9K4 DBW20B1-52/3152-6EG24N9K4

DBW20B1-52/315Y-6EG24N9K4 DBW20B1-52/3152Y-6EG24N9K4

DBW20B2-52/315-6EW230N9K4 DBW20B2-52/3152-6EW230N9K4

DBW20B2-52/315Y-6EW230N9K4 DBW20B2-52/3152Y-6EW230N9K4

DBW20B2-52/315-6EG24N9K4 DBW20B2-52/3152-6EG24N9K4

DBW20B1-52/100-6EW230N9K4 DBW20B1-52/100X-6EW230N9K4

DBW20B1-52/100Y-6EW230N9K4 DBW20B1-52/100XY-6EW230N9K4

DBW20B1-52/100-6EG24N9K4 DBW20B1-52/100X-6EG24N9K4

DBW20B1-52/100Y-6EG24N9K4 DBW20B1-52/100XY-6EG24N9K4

DBW20B2-52/100-6EW230N9K4 DBW20B2-52/100X-6EW230N9K4

DBW20B2-52/100Y-6EW230N9K4 DBW20B2-52/100XY-6EW230N9K4

DBW20B1-52/200Y-6EW230N9K4 DBW20B1-52/200XY-6EW230N9K4

DBW20B1-52/200-6EG24N9K4 DBW20B1-52/200X-6EG24N9K4

DBW20B1-52/200Y-6EG24N9K4 DBW20B1-52/200XY-6EG24N9K4

DBW20B2-52/200-6EW230N9K4 DBW20B2-52/200X-6EW230N9K4

DBW20B2-52/200Y-6EW230N9K4 DBW20B2-52/200XY-6EW230N9K4

DBW20B2-52/200-6EG24N9K4 DBW20B2-52/200X-6EG24N9K4

DBW30A1-52/315-6EG24N9K4 DBW30A1-52/3152-6EG24N9K4

DBW30A1-52/315Y-6EG24N9K4 DBW30A1-52/3152Y-6EG24N9K4

DBW30A2-52/315-6EW230N9K4 DBW30A2-52/3152-6EW230N9K4

DBW30A2-52/315Y-6EW230N9K4 DBW30A2-52/3152Y-6EW230N9K4

DBW30A2-52/315-6EG24N9K4 DBW30A2-52/3152-6EG24N9K4

DBW30A2-52/315Y-6EG24N9K4 DBW30A2-52/3152Y-6EG24N9K4

DBW30B1-52/315Y-6EW230N9K4 DBW30B1-52/3152Y-6EW230N9K4

DBW30B1-52/315-6EG24N9K4 DBW30B1-52/3152-6EG24N9K4

DBW30B1-52/315Y-6EG24N9K4 DBW30B1-52/3152Y-6EG24N9K4

DBW30B2-52/315-6EW230N9K4 DBW30B2-52/3152-6EW230N9K4

DBW30B2-52/315Y-6EW230N9K4 DBW30B2-52/3152Y-6EW230N9K4

DBW30B2-52/315-6EG24N9K4 DBW30B2-52/3152-6EG24N9K4

DBW30B1-52/100-6EW230N9K4 DBW30B1-52/100X-6EW230N9K4

DBW30B1-52/100Y-6EW230N9K4 DBW30B1-52/100XY-6EW230N9K4

DBW30B1-52/100-6EG24N9K4 DBW30B1-52/100X-6EG24N9K4

DBW30B1-52/100Y-6EG24N9K4 DBW30B1-52/100XY-6EG24N9K4

DBW30B2-52/100-6EW230N9K4 DBW30B2-52/100X-6EW230N9K4

DBW30B2-52/100Y-6EW230N9K4 DBW30B2-52/100XY-6EW230N9K4

DBW30B1-52/200Y-6EW230N9K4 DBW30B1-52/200XY-6EW230N9K4

DBW30B1-52/200-6EG24N9K4 DBW30B1-52/200X-6EG24N9K4

DBW30B1-52/200Y-6EG24N9K4 DBW30B1-52/200XY-6EG24N9K4

DBW30B2-52/200-6EW230N9K4 DBW30B2-52/200X-6EW230N9K4

DBW30B2-52/200Y-6EW230N9K4 DBW30B2-52/200XY-6EW230N9K4

DBW30B2-52/200-6EG24N9K4 DBW30B2-52/200X-6EG24N9K4