Pressure Relief Valve DBW 30 BG2-5X/315Y6EG12N9K4/12 - Bosch Rexroth R978918043

A size 32 circuit carrying up to 650 l/min has to be capped safely in an overload, and the pump should not keep working against full pressure afterwards. This pilot-operated relief valve holds the set value anywhere between 3.8 and 315 bar and unloads the circuit through a mounted directional spool valve as soon as the 12 VDC coil is energised.

Advantages

• Flow up to 650 l/min at a maximum operating pressure of 350 bar
• Setting range 3.8 to 315 bar, locked by an internal hexagon with protective cap
• Solenoid 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 three ports, 6.3 kg installed weight
• Connector, 3-pole (2 + PE) to EN 175301-803, NBR seals for HL hydraulic fluid

Application

Presses, injection moulding machines and large power units use a valve of this class to cap system pressure and to let the pump idle between strokes. The two switching positions of the pilot stage cover both functions without extra piping. The 12 VDC coil suits machines built around a 12 volt control system.

Manufacturer

Bosch Rexroth lists the item as material number R978918043 in the DB.10-30 product family. Characteristic curves and installation dimensions are given in the matching data sheet.