Bosch SB7 Additional Control Unit, Without Detent to B (AK Control Technology)

Offered here are new double-acting aftermarket control valves for the Bosch SB7 system.

They fit various tractors and manufacturers.

This is a 5/4-way valve, like the original Bosch valves. It has the positions raise, neutral, lower, and float.
The control valve can be switched between single-acting and double-acting using a grub screw on the rear side.
The control valve has hydraulic end shutoff on connection A, which means that when the maximum pressure is reached, the valve unlocks and automatically returns to the neutral position. This corresponds to the function of the original SB7 control valves.

The Raise (A) position is detented.

The Lower (B) position is not detented. If you continue past the lower position, the detented float position is engaged, (consumer connections A and B connected to each other and to return). The float position can be used as a detented lower position for both double-acting and single-acting lifting cylinders. 

The control valve is simply integrated into the existing system with longer studs.
The control valve has working ports at the bottom (as on the original) and at the top. The upper ports also make it suitable for use where there is limited space to the steering knuckle.

It fits various tractor manufacturers (list may be incomplete):
IHC; Deutz; Fendt; Eicher; Schlüter; MB Trac; Güldner; Kramer; Lindner; Steyr; Porsche;

Technical data:
Max. operating pressure [bar]: 250
Max. return pressure [bar]: 50
Rated flow [l/min]: 60
Tightening torque [Nm]: 30
Overlap: positive
Connections [mm]: M18 x 1,5