Load & Motor Control Valves - Threaded Cartridge

Counterbalance

MHB – The MHB series is a body style counterbalance valve. It is an in-line valve and is ideal for mounting directly to an actuator port. There are various flow rates, pilot ratios, and mounting styles available in the MHB series.

MHC – The MHC series is a threaded cartridge style counterbalance valve. This series is ideal for incorpo-rating into an integrated manifold or for installation directly into the port of the actuator. There are various flow rates and pilot ratios available for the MHC Series.

CB101 – The CB101 is also a threaded cartridge style counterbalance valve. It also is ideal for incorporating into an integrated manifold or for installation directly into the port of the actuator. The CB101 has an industry common cavity (C10-3) and is available in three pilot ratios.

Motor Control Valves

Motor Controls:
Counterbalance valves are used in motor circuits to stop overrunning loads and prevent cavitation. Since hydraulic motors leak internally, the counterbalance valve by itself cannot be used to hold the load. So, a mechanical brake is used to hold the load on the motor in place, as shown below. Some typical applications include winches, swing drives, conveyor control and traction drives. For applications in closed loop motor circuits, vented spring cavities are required.

MMB – The MMB is a motor control valve. It is de-signed to manifold mount to the Parker, TB, TE, TF, & TG motors. It is available in an equal area or a 10:1 pilot ratio. While the basic concept is the same, motor control systems have different characteristics and requirements than cylinder applications. For assistance in applying a motor control valve, consult the Motor Control Section of the Technical Tips.