Valves
Where reliability and perfect functioning even under extreme conditions are the essential prerequisites for a successful application the Tiefenbach Control Systems valves have become firmly established.
With our widespread product range tailored to the special applications hydraulic fluids are safely controlled at high pressure differences and extreme operating temperatures. Long-life and highly effective sealing systems permit a use in rough environments and prevent emissions that would harm the environment.
Irrespective of whether the task is to determine pressures, set flow rates set or change flow directions: With the valves of Tiefenbach Control Systems hydraulic system operations can be effectively controlled. The valves are actuated either mechanically, hydraulically or electrically. Operation of the electrically activated valves is by intrinsically safe solenoids.
Everything is under control!
With the new safety directive for machinery and equipment 2006/42/EC coming into effect control systems which are part of a safety function must be evaluated according to their degree of reliability.
This operational reliability is determined in accordance with DIN EN ISO 13849 by taking a probabilistic approach. The safety-relevant control systems are evaluated and classified into different „Performance Levels“ (PL).
In order to be able to grade the safety-relevant control systems the MTTFd values (Mean Time To Failure) of the individual components of the control system are used.
Tiefenbach Control System GmbH makes available as download the certificate issued by an independent certification body covering the MTTF values of the 3/2-way capsules and 2/2-way capsules.
![[Translate to Englisch:] Wegeventileinsatz](/fileadmin/products/bergbau/3_2_Wegeventileinsatz_02.jpg "[Translate to Englisch:] Wegeventileinsatz")
Directional control valves
Directional control valves are designed to allow or prevent hydraulic fluid flow or to change the flow direction. They are operated either electrically or manually. Our corrosion-resistant directional control valves are availabie in a variety[...]
Directional control valves are designed to allow or prevent hydraulic fluid flow or to change the flow direction. They are operated either electrically or manually.
Our corrosion-resistant directional control valves are availabie in a variety of norminal sizes and designs:
- 2/2-way valves
- 3/2-way valves
- 4/3-way valves
- Cartridge.
![[Translate to Englisch:] Rückschlagventil](/fileadmin/products/bergbau/HERV_02.jpg "[Translate to Englisch:] Rückschlagventil")
Check valves
Check valves permit flow in one direction, only, and block flow in the opposite direction without any leakage via a cone.On the "pilot-operated" type the blocking function can be deactivated by a separate control pressure. Our[...]
Check valves permit flow in one direction, only, and block flow in the opposite direction without any leakage via a cone.
On the "pilot-operated" type the blocking function can be deactivated by a separate control pressure.
Our corrosion-resistant check valves are available in a variety of nominal sizes and designs:
- In-line check valves
- One-way restrictors
- Pilot-operated check valves
- Pilot-operated twin check valves
- Pilot-operated dual check valve
- Cartridge.
![[Translate to Englisch:] Druckbegrenzungsventil](/fileadmin/products/bergbau/DBV_03.jpg "[Translate to Englisch:] Druckbegrenzungsventil")
Pressure relief valves
The pressure relief valves limit the pressure in a hydraulic system. Our corrosion-resistant pressure relief valves are available in different nominal sizes and with setting pressures of up to 600 bar.
The pressure relief valves limit the pressure in a hydraulic system. Our corrosion-resistant pressure relief valves are available in different nominal sizes and with setting pressures of up to 600 bar.
![[Translate to Englisch:] Druckminderventil](/fileadmin/products/bergbau/Druckminderventile_02.jpg "[Translate to Englisch:] Druckminderventil")
Pressure reducing valves
The pressure reducing valves keep the outlet pressure constant. Our corrosion-resistant pressure reducing valves are available in different nominal sizes and with operating pressures of up to 450 bar.
The pressure reducing valves keep the outlet pressure constant. Our corrosion-resistant pressure reducing valves are available in different nominal sizes and with operating pressures of up to 450 bar.
![[Translate to Englisch:] Drosselventil](/fileadmin/products/bergbau/Drosselventil_03.jpg "[Translate to Englisch:] Drosselventil")
Flow control valves
The flow control valves are used for regulating the volume flows. Our corrosion-resistant flow control valves are available in different nominal sizes and with operating pressures of up to 350 bar.
The flow control valves are used for regulating the volume flows. Our corrosion-resistant flow control valves are available in different nominal sizes and with operating pressures of up to 350 bar.
![[Translate to Englisch:] Wechselventile](/fileadmin/products/bergbau/Wechselventile_03.jpg "[Translate to Englisch:] Wechselventile")
Flip-flop valves
The flip-flop valves are stop valves with two inlets and one outlet. The pressurized inlet is automatically connected with the joint outlet. In this configuration the other inlet is closed. Our corrosion-resistant flip-flop valves are[...]
The flip-flop valves are stop valves with two inlets and one outlet. The pressurized inlet is automatically connected with the joint outlet. In this configuration the other inlet is closed.
Our corrosion-resistant flip-flop valves are available in different nominal sizes and with operating pressures of up to 350 bar.
![[Translate to Englisch:] Vorsteuerventil](/fileadmin/products/bergbau/Vorsteuerventil_01.jpg "[Translate to Englisch:] Vorsteuerventil")
Pilot valves
The pilot control valves are 4/3-way valves. They are primarily designed for operating larger valves, particularly as part of the electrohydraulic control system. A flanged-on solenoid converts electrical energy into mechanical energy via a[...]
The pilot control valves are 4/3-way valves. They are primarily designed for operating larger valves, particularly as part of the electrohydraulic control system.
A flanged-on solenoid converts electrical energy into mechanical energy via a magnetic coil with plunger which, in turn, actuates the directional control valves. Hydraulic control systems can thus be indirectly electrically controlled. This feature is the one permitting an effective connection to our shield control units and an automation of the mining operation.