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28/52
Assembly
Bosch Rexroth AG, DB(W)52...3X/..E, RE 25850-B/02.19
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 14.
Table 14: M port, information on the plug screw
Valve type + size
Fitting of hydraulic connections, valves with pipe thread
according to EN ISO 228 Part 1
Tightening torque
1)
, related to the max. operating
pressure
1)
Friction coefficient µ = 0.09 to 0.14
DB(W)52...3X/..E
G1
225 Nm
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