4weh10j Electro-Hydraulically Operated Directional Valve

• Customization: Available
• Media: Oil
• Temperature: High Temperature
• Model NO.: 4WEH10J40/6EG24N9ETZ5L
• Actuator: Electric
• Connection Form: Tubular
• Type: Pilot Operated
• Material: Cast Iron
• Pressure: High Pressure
• Valve Structure: Pilot Piston Structure
• Power Supply: DC Solenoid Valve
• Usage: Emptying
• Standard: DIN
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Nodular Cast Iron: Qt500
• Transport Package: Carton
• Specification: ISO9001
• Trademark: Power or OEM
• Origin: China
• HS Code: 84812010
• Production Capacity: 10000PCS/M

Product Description

1. Product Description

Electro-hydraulic directional valves type WEH use solenoids as pilot control. It is for sub-plate 

mounting, and its porting  patten accords with DIN 24 340 and ISO 4401.

There are many different features and additional device for selection.

Solenoids of pilot valve are wet-pin DC or AC. 

The main valve uses spring or hydraulic centered and spring or hydraulic offset. With or without 

shifting time adjustment; With or without stroke adjustment ;  Pre-load valve or throttle insert can 

be installed in the main valve. Pressure reducing valve can be installed when operating pressure 

exceeds 25 MPa.

Valves of type WEH are directional spool valves with electrohydraulic operation, using the directional 

valve as pilot control. They control the start, stop and direction of a fluid flow.

The directional valves basically consist of the main valve with housing (1), main control spool (2), one 

or two return springs, and the pilot valve (4) with one or two solenoids.

The main control spool (2) is held in the neutral or in the initial position either by the springs or by 

means of pressure. Pilot valve has wet DC or AC solenoids (5), optional. The main control spool is 

shifted by pilot valve (4).

The pilot valve has 4 versions (see symbols).

Hereinafter it is illustration for various valves.

4/3-way directional valve with spring centred of the main valve.

The main control spool (2) is held in the neutral position by two return springs (3), and the two spring 

chambers (6) are connected to the tank via the pilot valve (4). The pilot oil is supplied via the pilot line 

(7). When the pilot valve (4) switches direction(one solenoid of the pilot valve energizes), the pilot 

fluid acts on the one end of the main spool (2) and pushes it (2) to move and the required port is 

connected, thus the flow direction of the fluid is changed.

When the solenoid is de-energized, the pilot spool returns to its initial position (exception: impulse 

valve). The spring chambers (6) are connected to tank by pilot valve (4). Under the force of spring, the 

spool returns to its neutral position. The oil in the spring chamber (6) flows to return line from external 

port Y or internal line T via the pilot valve (4).

4/3-way directional valve with hydraulic centred of the main control spool.

The main control spool (2)  is held in the neutral position by  pressure oil acting on the two end faces, 

and is located in the neutral position by a locating sleeve(9).

By removing the pressure from one of the spool(2) ends, the main control spool(2) is moved to the 

shifted position. The fluid in unload chamber flows into Y channel via the pilot valve(4) , and the internal 

drain fluid direct return to tank via port L.

2. Product Photos

3. Company Profile

      NNINGBO POWER HYDRAULIC MOTOR CO.,LTD is a wel-trusted manufacturer in hydraulic industy.
      The company have achieved IS09001:2015 quality system, relying on strong technology development and production capacity,our annual output 600 thousand pieces. We produce all kinds of hydraulic valve, mainly include Rexroth and Yuken series of hydraulic valve products. Our products are widely used in mining, engineering, construction, plastics, chemicals, machine tools and so on. Our goal is to continue to deliver cost-effective products and more improved electro-hydraulic technology solutions.
     We also aim to help our customer to attain competitive advantage. It is our business to create more solutions, not just to satisfy the needs of our customers but also to help them progress in the industry.
     

4. Certificates

5. Factory

6. FAQ

Q1: Are you trading company or manufacturer ?

A: We are factory.

Q2: How long is your delivery time?

A: Generally it is 3-5 days if the goods are in stock, or it is 20-30 days if the goods are not in stock, it is according to quantity.

Q3: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q4: What is your terms of payment ?

A: Payment<=5000USD, 100% in advance. Payment>=5000USD, 30% T/T in advance ,balance before shippment. If you have another question, pls feel free to contact us.