Rexroth solenoid valve 4WE6C62/OFEG220N9K4 in stock.
$227.05
When the Rexroth solenoid valve is energized, the electromagnetic force opens the pilot orifice, causing the pressure in the upper chamber to drop rapidly. This creates a pressure differential around the closing element, with the pressure lower at the top and higher at the bottom. The fluid pressure then pushes the closing element upward, opening the valve. When de-energized, the spring force closes the pilot orifice, and the inlet pressure quickly creates a pressure differential around the closing element through the bypass orifice, with the pressure lower at the bottom and higher at the top. This fluid pressure then pushes the closing element downward, closing the valve.
Brand
REXROTH/Germany Rexroth
Flow Direction
Other
3C Valve Category
Industry
Application Areas
Chemical, Petroleum, Mining, Road/Rail/Marine, General
Rexroth Solenoid Valves, Rexroth Piston Pumps, Rexroth Relief Valves, Rexroth Proportional Valves, Rexroth Vane Pumps
Rexroth solenoid valves have a sealed chamber with through-holes at different positions, each connecting to a different oil pipe. Inside the chamber is a piston, flanked by two electromagnets. When the coil of one electromagnet is energized, the valve body is attracted to that side. Controlling the movement of the valve body opens or closes different drain holes. The inlet hole is always open, allowing hydraulic oil to enter different drain pipes. The oil pressure then pushes the piston in the cylinder, which in turn moves the piston rod, which in turn drives the mechanical device. Thus, controlling the flow of current to the electromagnets controls the mechanical movement.
The selection of Rexroth solenoid valves should first follow four principles in order: safety, reliability, applicability, and economy. Secondly, it should be based on six aspects of the on-site operating conditions (i.e., pipeline parameters, fluid parameters, pressure parameters, electrical parameters, actuation method, and special requirements).
Rexroth Solenoid Valve Selection Basis:
1. Selecting the solenoid valve based on pipeline parameters: nominal diameter (DN) and connection type
1) Determine the nominal diameter (DN) based on the on-site pipeline inner diameter or flow requirement;
2) For the connection type, generally, >DN50 requires a flange connection, while ≤DN50 can be freely selected according to user needs.
2. Selecting Solenoid Valves Based on Fluid Parameters: Material and Temperature Group
1) Corrosive fluids: Corrosion-resistant solenoid valves and all-stainless steel valves are recommended; Ultra-clean edible fluids: Food-grade stainless steel solenoid valves are recommended.
2) High-temperature fluids: Solenoid valves made with high-temperature resistant electrical and sealing materials should be selected, and piston-type valves are preferred.
3) Fluid state: Fluids can be gaseous, liquid, or mixed, especially when the diameter is greater than DN25, these must be clearly distinguished.
4) Fluid viscosity: Generally, any viscosity can be selected below 50 cSt. If it exceeds this value, a high-viscosity solenoid valve should be selected.
3. Selecting Solenoid Valves Based on Pressure Parameters: Principle and Structural Types
1) Nominal pressure: This parameter has the same meaning as other general-purpose valves and is determined by the nominal pressure of the pipeline.
2) Working pressure: If the working pressure is low, a direct-acting or step-direct-acting principle valve must be selected; when the minimum working pressure difference is above 0.04 MPa, direct-acting, step-direct-acting, and pilot-operated valves can all be selected. 4. Electrical Selection: AC220V or DC24V voltage specifications are preferred for ease of use.
5. Selection Based on Continuous Operating Time: Normally Closed, Normally Open, or Continuously Energized
1) When the solenoid valve needs to be open for a long time, and the duration is longer than the closing time, a normally open type should be selected.
2) If the opening time is short or the opening and closing times are infrequent, a normally closed type should be selected.
3) However, for some safety protection applications, such as furnace and kiln flame monitoring, normally open types cannot be selected; continuously energized types should be chosen.
6. Selection of Auxiliary Functions Based on Environmental Requirements: Explosion-proof, Check Valve, Manual Operation, Water-resistant (fogproof), Water Spray, Submersible.
Rexroth solenoid valves are fundamental automation components used to control fluids. They are actuators, not limited to hydraulic or pneumatic systems. They are used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, while ensuring control accuracy and flexibility. There are many types of solenoid valves, each playing a different role in a control system. Commonly used types include check valves, safety valves, directional control valves, and speed control valves.
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