4weh Electro Hydraulic Directional Directional Valve Electromagnetic Superposition Valve Electro Hydraulic Operation Method 4weh Solenoid Valve

• Customization: Available
• Function: Pilot Operated Solenoid Valve
• Installation: Superposition
• Model NO.: 4WEH
• Drive: Electric Hydraulic
• Type: Directly Operated Type
• Orifice: 10/16/22/25/32
• Voltage: 12/24/220
• Slide Valve Function: D/E/J/L
• Structure: Combined Type
• Application: Hydraulic System
• Transport Package: Pilot Operated Solenoid Valve
• Specification: Pilot control valve for main valve, main control s
• Trademark: zhongchuang
• Origin: China
• HS Code: 8481100090
• Production Capacity: 100000pieces/Year
• Package Size: 30.00cm * 20.00cm * 25.00cm
• Package Gross Weight: 15.000kg

Product Description

Product Description

Working principle: The 4WEH type electro-hydraulic directional valve is a step-by-step direct pilot solenoid valve, consisting of an electromagnetic directional valve and a hydraulic directional valve. The electromagnetic directional valve serves as the pilot valve, while the hydraulic directional valve serves as the main valve. By changing the direction of the control oil through the electromagnetic directional valve, the main valve can achieve directional change under the action of the control oil.
Structural composition: The basic components of a directional valve include a main valve with a housing, a main control valve core, one or two reset springs, and a pilot control valve with one or two electromagnets.
Application scenario: It can control the start, stop, and direction of flow and is widely used in hydraulic equipment.

parameter

Path: Common ones include 10, 16, 22, 25, 32, etc.
Maximum working pressure: up to 350 bar.
Maximum flow rate: The maximum flow rate corresponding to diameter 16 is generally 300L/min, the maximum flow rate corresponding to diameter 25 is generally 650L/min, and the flow rate corresponding to diameter 32 is around 1100L/min.
Voltage: Common types include DC 24V, AC 220V, etc.
Sliding valve function: There are various types, such as D, E, J, L, etc.

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FAQ

 

Question 1: How does the electromagnetic pilot valve and main valve of the electro-hydraulic directional valve 4WEH work together?
Answer: The electromagnetic pilot valve switches its working position after receiving an electrical signal, changing the direction of the control oil flow. Control the oil to enter different control chambers of the main valve, push the main valve core to move, and thus achieve the direction change of the main oil circuit. When the electromagnetic pilot valve is powered off and reset, the main valve also returns to its initial position under the action of the reset spring, etc.
 
Question 2: What should be noted when installing the WEH electro-hydraulic directional valve?
Answer: During installation, ensure that the installation surface is clean and free of impurities, and ensure that the installation bolts are evenly tightened to prevent leakage. The oil port connection should be correct to avoid reverse connection. At the same time, the working environment should be considered to avoid installation in places with high temperature, humidity, or strong corrosive gases. Attention should also be paid to the installation direction, which should meet the design requirements and operational convenience of the equipment.
 
Question 3: What are the possible reasons for the unstable direction of the WEH electro-hydraulic directional valve during operation?
Answer: It may be due to unstable pressure of the control oil, such as control oil source failure or pressure regulating device failure; It may also be a malfunction of the electromagnetic pilot valve, such as insufficient electromagnetic suction, stuck valve core, etc; The main valve core may be stuck or the reset spring may have insufficient elasticity or damage, which can also lead to unstable reversing; In addition, severe oil contamination and impurities entering the valve can affect the normal movement of the valve core, which can also cause this problem.