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These valves control the reciprocating and rotating speed of hydraulic actuators, A variety of flow control valves including pressure and'or temperature-compensated Mow control valves is available.
Flow Control Valves/Flow Control and Check Valves
These valves are pressure and temperature compensating type valves and maintain a constant flow rate independent of change in system pressure (load) and temperature (viscosity of the fluid). They control the speed of the actuator precisely. The valves with an integral check valve allow a controlled flow and reverse free flow. Repeated resetting can be made easily with a digital readout.
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Various type of pressure control valves are available, from relief valves to pressure switches, to control the pressure at suitable level in the hydraulic system.
Low Noise Type Pilot Operated Reliel Valves
Pilot operated relief valves here have been particularly developed as low noise type. To protect the pumps and control valves from an excessive pressure, the valves are used to control the pressure in the hydraulic system to constant level. The remote control and unloading can be done by using the vent circuit.
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Flow rate control valve for automatic regulation of a constant flow rate in the case of changing supply pressures.
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FEATURES:
- DIAMOND LAPPED SPOOL BORE provides consistent spool fit with low leakage.
- O'RING PORTS to eliminate leakage.
- EVERY EFC IS TESTED for shutoff, linearity, max. flow, crack open and pressure compensation.
- STANDARD 3-PORT allows for pressure compensated flow out of the CF and EX ports.
- MANUAL OVERRIDE when electrical power is lost.
- OPTIONAL 2-PORT allows for pressure compensated flow out of CF port.
- OPTIONAL FREE REVERSE FLOW allows fluid to move from the CF port to the inlet.
- OPTIONAL HIGH LIFT RELIEF.
SPECIFICATIONS:
- See flow chart for capacity.
- 3000 psi (207 bar) rating.
- Weighs 8-1/2 lbs. (3.9 kg).
- Standard Port size #12SAE (1-1/16 - 12).
- 10-Micron Filtration Recommended.
- Pulse Frequency (90 to 115 hz).
- Coil
* 12 VDC standard (24 VDC).
* 9.6 ohms (48 ohms).
* 15 watts (15 watts).
* 1.0 amp max (0.5 amp max.).
- Response Time.
* 0.035" Standard dash pot (375 ms).
* 0.020" Dash pot (900 ms).
* 0.093 Dash pot (175 ms to 350 ms depending on flow).
- Spool leakage (50 ml/min. @1000 psi on EX port).
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- Adjustment Options for FC, FR, NV, MR Series Valves (Tech. Ref. Info.)
- Needle Valves and Rotary Flow Control
- Flow Controls, Free Flow
- Flow Regulators, Pressure-Compensated, Fixed Setting
- Flow Regulator, Restrictive, Adjustable
- Flow Regulators, Pressure-Compensated, Priority Bypass, Fixed Setting
- Flow Regulators, Pressure-Compensated, Adjustable
- Flow Regulators, Fixed Orifice, Bi-Directional
- Flow Controls, Bypass, Adjustable Orifice
- Flow Regulators with Pressure Relief
- Pressure Compensators
- Pressure Compensators, Load Sensing
- Flow Dividers / Combiners
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- MODEL: RF-G02
- MAX. PRESSURE PSI: 3000
- PRESSURE ADJ. RANGE: 100-1000, 500-2000, 1000-3000
- RATE FLOW LPM: 16
- BOLT METER: M5*40L 4 PCS
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- Pressure Control Adjustment Options (Tech. Ref. Info)
- Motion Control Valves
- Relief Valves, Poppet-Type
- Relief Valves, Pilot-Operated, Spool-Type
- Relief Valves, Bi-Directional
- Cross-Over Relief Valves
- Thermal Relief Valve
- Pressure Reducing / Relieving Valves
- Sequence with Pilot and Internal Vent
- Sequence with Pilot and Drain
- Sequence with External Pilot
- Sequence, Kick-Down
- Unloading Pilot
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Pneumatic, electric and hydraulic control valves in all common sizes, pressure ratings and materials in accordance with ANSI, DIN and JIS standards.
Optionally, the valves are available with metal bellows and low-noise trims.
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Control Valve for Mini Excavator
The control valves which change the flow of oil, play a major role in the actions of oil-hydraulic excavators, including its traveling and control of the arms. This product is a sectional type multi control valve developed specially for mini excavators, and it is guaranteed to answer various needs including action control. Compact, multi-functional and with a wide range of a lineup, these control valves boastfully account for its domestic share of over 50%.
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The Skilmatic range is a self-contained electro-hydraulic valve actuation solution available for both quarter-turn and linear applications. The actuators incorporate sophisticated electronics that provide non-intrusive set-up and interrogation via an infra-red hand held remote. They are suitable for on/off, modulating and emergency shutdown duties in applications up to SIL 3.
•Linear thrust output 1.7 to 5500kN.
•Quarter-turn torque output 65 to 600,000Nm.
•Single-, three-phase or 24Vdc power supply options.
•Non-intrusive infrared setting & configuration.
•LCD display for position, pressure, diagnostics and fault indication.
•Optional bus communications via all major protocols.
•Partial stroke test capability.
•Watertight or explosionproof.
•Double-sealed terminal compartment.
•ATEX, FM, CSA, IEC and GOST certified.
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Electro-hydraulic valve actuators for positional, modulating and stepping control of globe, choke, plug, gate, ball, and butterfly valves, for hazardous areas and severe environments, these can be self contained with their own power packs and tank systems or be fitted into an existing hydraulic ring main circuit.
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Motorized hydraulic pump operates continuously,
ensuring positional control with continuous modulation
is available in addition to accumulator storage.
When the system is fully charged, the pump will automatically
unload with a signal from the integral pressure switch
ensuring no excessive heat generation.
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Actuation and control for turbo machinery:
Modern turbo machinery needs to fulfill two basic prerequisites - optimum operation and low impact on the environment. Voith Electronic Drive Systems are active in the field of positioners and control for turbo machinery.
This comprises actuation for gas turbines, steam turbines and compressors, such as for example complete valve assemblies (valve with servo motor), servo motors or pilot controls designed as I/H-converters and way valves for existing positioners and the control system Turcon (turbine control) for steam turbines and compressors.
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Hydraulic actuators
Double acting and single acting hydraulic actuators based on the Petras actuator typical design are available up to 200 barg supply.
Petras can also complete systems with electro hydraulic micro power unit and control systems.
Established in 1966, PETRAS is a pioneer in the design and manufacture of high performance pneumatic and hydraulic actuators for quarter turn valves.
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Good reasons for this automation:
No radial forces have an effect on the shaft of the fitting.
This saves as well as the bearing and the packet
With the hollow shaft design or an adapter hub the required
Eckart rotary actuator can adapted to every Zwick high performance flap
Very fast control times (e.g. 90° in 0.2 seconds) can be realized
By the optimal end cushioning of the Eckart rotary actuator the
closing stop position of the fitting is also saved
The regulation of the volume flows is very simple and repeating exact
No additional lubrication is necessary
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Actuators & Accessories
We provide a complete product line of actuators and accessories to meet all your valve automation requirements.
XOMOX Valves can be readily and inexpensively equipped with a variety of pneumatic, electrical or hydraulic actuators. We also supply a complete line of actuator devices and accessories (e.g. positioners, limit switches, solenoid valves, air filters, etc.) to complement your valving needs.
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Pressure/Flow Controller ED1 resp. SD1
Optionally usable as pressure relief, pressure reducing, 2-way flow controller
or 3-way flow controller
Connection of proportional throttle pressure relief or pressure reducing valves
Connection of an analogue pressure-, flow- or speed sensor
Parametering by means of front keyboard, operating terminal or software
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The programmable logic valve control type PLVC is intended for the control
of complex hydraulic circuits. Movements with various pressure, speed, and acceleration profiles, within predefined ranges, can be controlled and saved. It can be descirbed as a user programmable PLC with built-in amplifiers for proportional valves.
Analogical, digital and components connected via CAN-Bus (e.g. pressure sensors, joysticks, etc.) can be utilized for control or closed loop tasks, connected via cable or wireless. This high degree of flexibility is achieved by:
* Modular concept with various extensions and add-on's (basic and extension module, diagnosis display, CAN-Bus-power relays)
* Flexible programming
* Various interfaces (RS 232, CAN-Bus, Profi-Bus)
* Free parameter setting of all in- and out-puts
* Remote diagnosis via modem and mobile telephone
* Software function blocks (PLC programs)
* Remote control module
Main field of application is with machines for construction, lifting, logging, machine tools, and presses.
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Hydraulic actuator
Simple or double effect - couple of 700 Nm with 200 Nm - Quarter of turn, linear or multitour.
Created in 2000 and established in North Isere (Villefontaine). We are specialized in the design and the distribution of materials and accessories of industrial valves and fittings.
A perfect knowledge of the products in varied fields (chemistry, oil, cryogenics, the hydroelectric one, engineering and maintenance), enables us to bring solutions adapted to your needs.
In addition to the delivery of the new material, we propose their installation as well as the handing-over in a state of existing material.
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