Additional M Port - Bosch Rexroth DB 5X E Series Operating Instructions Manual

7.9 Additional M port

Safety valves are equipped with an additional connection port at the front, in the P
channel. In the state as delivered, the port is closed by a plug screw. When the plug
screw is removed, a pressure gauge for pressure indication can be connected to the
M port.
Always use the tightening torque specified by the pressure gauge manufacturer to
install the pressure gauge.
To seal the port again using the plug screw, the screw must be tightened using the
tightening torque specified in table 11.
Table 11: M port, information on the plug screw
Valve type + size
Component marking
Fitting of hydraulic connections,
valves with pipe thread according
to EN ISO 228 Part 1
1) , related to
Tightening torque
the max. operating pressure
1) Friction coefficient µ = 0.09 to 0.14
DB(W)10...5X/...E DB(W)20...5X/...E
1151 1151
G 1/4 G 1/4
30 ±3 Nm 30 ±3 Nm
RE25802-B/09.19, DB(W)...5X/...E, Bosch Rexroth AG
Assembly 29/56
DB(W)30...5X/...E
1151
G 1/4
30 ±3 Nm