Pressure Relief Valve DBW 30 BG2-5X/315-6EG12NK4/12 - Bosch Rexroth R978910606

A piped size 32 circuit needs two functions in one place: a firm ceiling for system pressure and a way to unload the circuit between two cycles. This relief valve covers both through a poppet seat pressure stage and a mounted directional spool valve switched by a 12 VDC coil. The setting runs from 3.8 to 315 bar, the flow reaches 650 l/min.

Advantages

• Flow up to 650 l/min at a maximum operating pressure of 350 bar
• Setting range 3.8 to 315 bar, held by an internal hexagon with protective cap
• Unloading through a mounted directional spool valve on 12 VDC, two switching positions
• Poppet seat pressure stage, connection diagram ISO 6264-10-17
• Threaded connection with two ports, weight 6.3 kg
• Connector, 3-pole (2 + PE) to EN 175301-803, NBR seals for HL hydraulic fluid

Application

Piped power units, presses and hydraulic clamping systems use a valve of this class as the system pressure limit. The solenoid unloading lets the pump idle at almost no pressure during breaks, with no extra valve to pipe in. The 12 VDC coil suits control systems built around a 12 volt supply. The internal hexagon with protective cap keeps the setting once it has been found.

Manufacturer

Bosch Rexroth lists the item as material number R978910606 in the DB.10-30 product family. Characteristic curves, installation dimensions and tightening torques are given in data sheet RE 25802.