Compact Modular Valve Assembly
Compact Modular Valve Assembly
Compact Modular Valve Assembly
Modular Blocks Size 06 (CETOP 03) with Built-in Valves
Technical Features
Simple creation of complicated hydraulic circuits
› Flexible connection solution
› Wide range of valves available
› Circuit creation without the use of pipes and hoses
› Saves build-in space
Functional Description
Vertically integrated modular blocks with built-in valves are assembled into a single unit
using four M5 or 10-24 UNC threaded bolts and mounted to a base, e.g. to a subplate, a
parallel circuit manifold with side ports or another block. The connection plate diagram conforms with ISO 4401. The surface of upper block is usually closed with connected directional control valve with body or with a blanking plate.
Directional Control Valves with Body
The valves control the movement direction of the actuator and usually close the upper surface of vertically
integrated modular valves. The most commonly used are solenoid operated with one solenoid (4/2) or two
solenoids (4/3, 4/2 with detent assembly of spool). However, they can also be operated manually, hydraulically
or pneumatically.
Proportional Directional Control Valves with Body
The valves can be used instead of standard valves. In addition to controlling the fluid flow direction, they enable smooth control of volumetric flow, and thus the moving speed of piston rod or hydraulic motor. To ensure the repeatability of regulation, it is necessary to stabilize the pressure drop on the control edges of spool using a two-way or a three-way pressure compensator. An electronic control unit is necessary for the valve control. It can be integrated on the top surface of the valve (on-board ECU) or located on an external standardised plate. Proportional valves allow comfortable, continuous remote control via electric command signal. The built-in spool position sensor as a feedback reduces the valve hysteresis to 0.5 %.
Blanking Plates
They can be used for closing the channels on the top surface of vertical integrated modular valves instead of a top valve with body. The plates enable various channels connection.
Directional Control Valves, Spool Type
2/2 directional control valves, built in modular block, are often used as stop valves, connecting or unloading valves.
Poppet Valves, Direct Acting
Poppet valves, built in modular block, are leak proof and are commonly used as stop valves, safety, connecting or unloading valves. The direct acting valves are bidirectional valves and can be used in both flow directions.
Poppet Valves, Pilot Operated
Pilot operated poppet valves close leak free only in one direction, according to the valve symbol. In the opposite direction the valve is open.
Check Valves
Check valves enable the fluid flow only in one direction. They are often connected to the pump pressure pipeline to prevent a backflow caused
by excessive load on the actuator. The modular block can be provided with one or two built-in check valves. The free flow direction can be chosen.
Check Valves, Pilot to Open
Pilot operated check valves are used for load holding when the pump is switched off. The valve can be built in A, B or both channels of modular block according to acting direction of the load.
Load Shuttle Valves
The valves connect the output channel with one of two input channels depending on the pressure value. They are often used for pressure (load)
sensing at a double-acting actuator
Pressure Relief Valves, Direct Acting
Pressure relief valves limit the maximum system pressure and protect the system against overloading. They are connected parallel to the pump or actuator.
Pressure Relief Valves, Pilot Operated
Pressure relief valves limit the maximum system pressure and protect the system against overloading. They are connected parallel to the pump or
actuator.
Pressure Relief Valves Operated by Solenoid
The solenoid operated relief valves switch between two adjusted pressure values or adjusted maximum and minimum system pressure (combined
relief and unloading function). The pressure values are adjusted mechanically with the help of two adjusting screws.
Proportional Pressure Relief Valves
The valves enable continuous adjustment of the maximum system pressure depending on the command control signal. The valves with a negative
characteristic create the maximum pressure at zero control signal (opposite function)
Pressure Reducing Valves, Direct Acting
Reducing valves maintain a constant set pressure. They are often used for adjusting the pressure on an actuator, it means the force acting on the
piston rod or the torque on the shaft of hydraulic motor. Three-way valves protect the pipeline leading to the actuator against pressure overloading as
a relief valves and allow the back flow from the actuator to the tank.
Proportional Pressure Reducing Valves
Proportional reducing valves are used for remote continuous adjusting of the pressure on an actuator, it means the force acting on the piston rod or
the torque on the shaft of hydraulic motor. Three-way valves protect the pipeline leading to the actuator against pressure overloading as a relief
valves and allow the back flow from the actuator to the tank. The valves with a negative characteristic create the maximum pressure at zero control
signal (opposite function).
Overcenter Valves
Overcenter valves ensure the load position when the pump is off and enable continuous, safe movement control of the load acting in the movement
(negative) direction of the actuator, which is accelerated by load. Non-balanced and fully balanced valves with ventilation of spring space are
available.
Throttle Valves with Bypass Check Valves
Throttle valves are used as flow restrictors for flow regulation and thus velocity regulation of actuator. The flow can be regulated upstream or
downstream the actuator depending on bypass check valve orientation which can be changed very simply by turning the valve by 180°. The valve
rotation is possible thanks to additional plate with sealing rings.
Throttle Valves
Throttle valves are used as a flow restrictor for flow regulation and thus velocity regulation of actuator.
Flow Control Valves with Two-way Pressure Compensator
Flow control valves with two-way pressure compensator maintain a set flow rate independent of the pressure induced by load and supply pressure
fluctuation. Constant pressure drop on the valve and thus the constant flow rate is maintained by throttling