Bosch Rexroth | DBDS6G1X180E
DBDS6G1X/180E
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The DBDS6G1X/180E pressure relief valve belongs to the DB Pressure Relief Valves series and is manufactured by Bosch Rexroth for maintaining safe pressure levels in hydraulic automation loops. A poppet seat stops flow sharply when the limit is reached, and the nominal size 6 envelope lets the valve fit compact control blocks. The factory set pressure of 180 bar defines the standard opening point, yet the setting can be reduced to 30 bar for lighter circuits. Operators make changes in 5 bar increments, which allows predictable tuning without over-adjustment. The unit remains structurally sound up to a 400 bar operating pressure, and a counterpressure influence of 1:1 ensures downstream pressure is added directly to the spring value when remote draining is used.
A hex adjustment screw with a protective cap shields the setting mechanism from accidental movement during service. The threaded connection mates to system lines, and the ports use a G 1/4 size so standard fittings can be applied. Threads follow ISO 228/1, which aligns the valve with common pipe hardware across global plants. Proper installation calls for 60 N·m of torque on the g 1/4 pipe fitting, while the plug screw is secured separately at 30 N·m to seal the spring chamber. The design tolerates up to 315 bar of back pressure at port t without affecting relief accuracy, and fluid cleanliness should not exceed ISO 4406 20/18/15 to avoid seat wear or unstable operation.
Technical Specifications
Adjustment Type
Hex With Protective Cap
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Threaded
Counterpressure Influence
1:1
Max Back Pressure (t)
315 bar
Max Operating Pressure (p)
400 bar
Minimum Set Pressure (e)
30 bar
Nominal Size
6
Pipe Fitting Torque (g 1/4)
60 N·m
Plug Screw Torque
30 N·m
Port Size (p,t)
G 1/4
Pressure Increment
5 bar
Seat Type
Poppet
Set Pressure
180 bar
Thread Standard
ISO 228/1
1620 Old Apex Road
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