WEH Series Directional Hydraulic Valves Of Pilot Operated

WEH Series Directional Hydraulic Valves Of Pilot Operated

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WEH Series Directional Hydraulic Valves Of Pilot Operated

The WEH series directional hydraulic valves of pilot operated are advanced components that provide precise and efficient control over hydraulic systems. Designed to meet the demands of various industries, these valves offer exceptional performance, reliability, and versatility.

The WEH series directional hydraulic valves of pilot operated are reliable, high-performance components that empower operators with precise control and efficient fluid management in hydraulic systems. With their pilot-operated design, exceptional directional control, a wide range of configurations, and high flow capacity, these valves offer the reliability and versatility required in various industries. Following the recommended usage methods and adhering to regular maintenance practices, the WEH series valves will continue delivering exceptional performance. Upgrade your hydraulic system with the WEH series directional hydraulic valves operated and experience the benefits of precision, control, and reliability.

WEH Series Directional Hydraulic Valves Of Pilot Operated Key Characteristics:

  • Pilot Operated Design:
    • The WEH series valves utilize a pilot-operated design, which enhances their responsiveness and control accuracy.
    • This design enables the valves to handle high-pressure applications, ensuring optimal performance easily.
  • Directional Control:
    • These hydraulic valves excel in providing precise directional control of hydraulic fluid.
    • Operators can easily manage fluid flow and direct it to different actuators or components within the hydraulic system.
  • Wide Range of Configurations:
    • The WEH series valves are available in various configurations, including various sizes, flow rates, and pressure ratings.
    • This versatility allows them to be tailored to specific application requirements and system specifications.
  • High Flow Capacity:
    • These valves are designed to handle high flow rates, making them suitable for applications that demand substantial fluid flow.
    • Their optimized internal passages and robust construction ensure minimal pressure drop and efficient fluid management.

WEH Series Directional Hydraulic Valves Of Pilot Operated Parameter:

NG10

Specifications WEH10  type
Max. operating  pressure：P、A、B 350
Port  T With external pilot oil drain  bar 315
With internal pilot oil drain   bar DC  210 AC  160
Port  Y With external pilot oil drain  bar DC  210 AC  160
Min. control pressure With external pilot oil supply  ( not apply to  C、Z、
F、G、H、P、T、V)   bar		 3-position valve  10
Spring-return 2-position valve            10
Hydraulic-return 2-position valve            7
With internal pilot oil supply  ( apply to  C、Z、F、
G、H、P、T、V)  bar		 6.5
Max. control pressure  bar 250
Fluid Mineral oil,Phosphate ester
Fluid temperature range   ℃ -30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Viscosity range mm2/s 2.8  to  500
Switching pilot oil volume             cm3 3-position valve  2.04
2-position valve  4.08
Switching times (= Valve switching time from the neutral position to the switched position)（AC and DC ）
Control pressure  bar 70 140 210 250
AC DC AC DC AC DC AC DC
3-position valve   ms 30 65 25 60 20 55 15 50
2-position valve    ms 35 80 30 75 25 70 20 65
Switching times (= Valve switching time from the switched position to the neutral position)
3-position valve    ms 30
2-position valve    ms 35 40 30 35 25 30 20 25
Installation position HC、HD、HK、HZ、HY Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/min about 35
Weight Single solenoid valve kg 6.7
Double solenoid valve kg 7.1
Switching time regulator kg 1.0
Reducing valve kg 0.5

NG16

Specifications WEH16…  type
Max. operating  pressure：P、A、B 350
Port  T With external pilot oil drain  bar 250
With internal pilot oil drain   bar DC  210 AC  160
Port  Y With external pilot oil drain  bar DC  210 AC  160
Min. control pressure With external pilot oil supply  ( not apply to  C、Z、
F、G、H、P、T、V)bar		 3-position valve  14
Spring-return 2-position valve            14
Hydraulic-return 2-position valve       14
With internal pilot oil supply ( apply to  C、Z、F、 G、
H、P、T、V) bar		 When applying prepressing or the flow is large correspondingly ,enginery of spool valve is 4.5 as C,Z,F,G,H,P,T and V
Max. control pressure  bar 250
Fluid Mineral oil,Phosphate ester
Fluid temperature range   ℃ -30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Viscosity range mm2/s 2.8  to  500
Switching pilot oil volume
– Spring-centering 3-position valve   cm3 5.72
– 2-position valve      cm3 11.45
* * Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure  bar 50 150 250
AC DC AC DC AC DC AC DC AC DC AC DC
– Spring-centering 3-position valve  ms 35 65 30 60 30 58
– 2-position valve     ms 45 65 35 55 30 50
**Switching times (= Valve switching time from the neutral position to the switched position)
– Spring-centering 3-position valve    ms 30
– 2-position valve    ms 45 45 35 35 30 30
Installation position C,D,K,Z,Y Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/min about 35
Weight  kg about 9.5

NG25

Specifications WEH25…  type
Max. operating  pressure：P、A、B 350
Port  T With external pilot oil drain  bar 250
With internal pilot oil drain   bar DC  210 AC  160
Port  Y With external pilot oil drain  bar DC  210 AC  160
Min. control pressure With external pilot oil supply  ( not apply to  C、Z、F、
G、H、P、T、V)   bar		 Spring-centering 3-position valve           13
Spring-return 2-position valve                13
Hydraulic-return 2-position valve            8
With internal pilot oil supply  ( apply to  C、Z、F、
G、H、P、T、V)  bar		 When applying prepressing or the flow is large correspondingly ,enginery of spool valve is 4.5 as C,Z,F,G,H,P,T and V
Max. control pressure  bar 250
Fluid Mineral oil,Phosphate ester
Fluid temperature range   ℃ -30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Switching pilot oil volume
– Spring-centering 3-position valve    cm3 14.2
– 2-position valve      cm3 28.4
* Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure  bar 50 140 210 250
AC DC AC DC AC DC AC DC
– Spring-centering 3-position valve  ms 50 85 40 75 35 70 30 65
– 2-position valve     ms 120 160 100 130 85 120 70 105
*Switching times (= Valve switching time from the neutral position to the switched position)
– Spring-centering 3-position valve    ms 40
– 2-position valve    ms 120 125 95 100 85 90 75 80
Installation position C,D,K,Z,Y Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/min about 35
Weight   kg about 18

NG32

Specifications WEH32…  type
Max. operating  pressure：P、A、B 350
Port  T With external pilot oil drain  bar 250
With internal pilot oil drain   bar DC  210 AC  160
Port  Y With external pilot oil drain  bar DC  210 AC  160
Min. control pressure With external pilot oil supply

With internal pilot oil supply

    3-position valve    8.5
Spring-return 2-position valve            10
Hydraulic-return 2-position valve       15
With internal pilot oil supply  ( apply to  C、Z、F、
G、H、P、T、V)  bar		 When applying prepressing or the flow is large correspondingly ,enginery of spool valve is 4.5 as C,Z,F,G,H,P,T and V
Max. control pressure  bar 250
Fluid Mineral oil,Phosphate ester
Fluid temperature range   ℃ -30  to  +80 ( NBR seals
-20  to  +80 ( FKM seals )
Viscosity range   mm2/s 2.8  to  500
Switching pilot oil volume
– Spring-centering 3-position valve    cm3 29.4
– 2-position valve      cm3 58.8
* Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure  bar 50 150 250
AC DC AC DC AC DC
– Spring-centering 3-position valve  ms 65 80 50 90 35 105
– 2-position valve     ms 100 130 75 100 60 115
*Switching times (= Valve switching time from the neutral position to the switched position)
– Spring-centering 3-position valve    ms ( DC ：50，AC ：60)
– 2-position valve    ms 115 90 35 70 65 65
Installation position C、D、K、Z、YType hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily
Flow of shortest switching time  L/min about 50
Weight  kg about 36

WEH Series Directional Hydraulic Valves Of Pilot Operated Advantages:

• Electrohydraulic directioanl valve directioanls the oil path by controlling the main spool
• WEH electrohydraulic control
• Installation face follow DIN 24340 A, ISO 4401 and CETOP-RP 121H Sub-plate mounting connection
• Wet DC or AC solenoid (optional)
• With manual emergency control
• Electropneumatic connection as single or center connection
• Spring or hydraulic alignment or bias

Usage Method Of WEH Series Directional Hydraulic Valves Of Pilot Operated:

  • System Integration:
    • Identify the optimal location for installing the WEH series valves within the hydraulic system, considering the desired flow path and control requirements.
    • Ensure compatibility with the system’s pressure and flow specifications.
    • Mount the valves securely using appropriate brackets or mounting accessories.
  • Pilot Control Setup:
    • Connect the pilot control lines to the designated ports on the valves, following the manufacturer’s instructions.
    • Ensure proper sizing and routing of the pilot lines to maintain optimal control signal integrity.
  • Fluid Connections:
    • Select compatible hydraulic fittings and hoses for secure and leak-free connections.
    • Follow the manufacturer’s instructions for proper torque values during the installation process.
    • Use appropriate thread sealants or tape to ensure reliable seals.
  • Control and Adjustment:
    • To operate the WEH series valves, utilize the recommended control method, such as manual levers or electrical controls.
    • Adjust the valves’ settings to achieve the desired flow direction and rates, ensuring optimal performance.

How Do Hydraulic Valve Lifters Work?

Hydraulic valve lifters, also known as hydraulic tappets or hydraulic lash adjusters, play a vital role in the proper operation of an internal combustion engine. They are responsible for maintaining the proper clearance, or “lash,” between the engine’s camshaft and valve train components. Here’s an overview of how hydraulic valve lifters work:

  1. Structure:
    • Hydraulic valve lifters are small cylindrical devices typically made of metal.
    • They are between the camshaft and the engine’s valve train components, such as the pushrods, rocker arms, or overhead cam followers.
  2. Hydraulic Operation:
    • Inside the hydraulic valve lifter, a small piston mechanism operates based on hydraulic pressure.
    • The lifter is filled with hydraulic fluid, typically engine oil, which acts as a working fluid.
  3. Camshaft Interaction:
    • The camshaft has lobes or eccentric shapes that push against the lifters as it rotates.
    • As the camshaft lobe comes into contact with the lifter, it applies a force that compresses its internal piston.
  4. Lash Adjustment:
    • When the lifter’s piston is compressed, it pushes the hydraulic fluid out of the lifter through a small orifice.
    • This hydraulic fluid is expelled into the engine’s oil galleries or passages.
  5. Lash Compensation:
    • The expelled hydraulic fluid creates a hydraulic cushion or “spring” effect, compensating for any clearance or lash between the camshaft lobe and the valve train components.
    • This compensation eliminates excessive clearance and ensures that the valve train remains in constant contact with the camshaft lobes.
  6. Maintenance of Lash:
    • If there is excessive clearance or lash in the valve train due to wear or other factors, the lifter’s internal piston will extend further to maintain the necessary hydraulic pressure.
    • This extended position allows the lifter to take up the additional clearance, thus maintaining proper valve lash.
  7. Oil Pressure and Lubrication:
    • The hydraulic valve lifters rely on the engine’s oil pressure for proper operation.
    • The oil pump circulates oil through the engine, and the lifters receive a continuous oil supply to maintain hydraulic pressure and lubrication.

Ικανότητα & χωρητικότητα του εργοστασίου:

(1) Συναρμολόγηση

Διαθέτουμε μια πρώτης τάξεως ανεξάρτητη πλατφόρμα συναρμολόγησης έρευνας και ανάπτυξης. Το εργαστήριο παραγωγής υδραυλικών κυλίνδρων διαθέτει τέσσερις ημιαυτόματες γραμμές συναρμολόγησης ανυψωτικών κυλίνδρων και μία αυτόματη γραμμή συναρμολόγησης κυλίνδρων κλίσης, με σχεδιασμένη ετήσια παραγωγική ικανότητα 1 εκατομμυρίου τεμαχίων. Το εργαστήριο ειδικών κυλίνδρων είναι εξοπλισμένο με διάφορες προδιαγραφές ενός ημιαυτόματου συστήματος συναρμολόγησης καθαρισμού με σχεδιασμένη ετήσια παραγωγική ικανότητα 200.000 και εξοπλισμένο με διάσημο εξοπλισμό κατεργασίας CNC, ένα κέντρο κατεργασίας, έναν ειδικό εξοπλισμό επεξεργασίας κυλίνδρων υψηλής ακρίβειας, μια μηχανή συγκόλλησης ρομπότ, μια αυτόματη μηχανή καθαρισμού, μια αυτόματη μηχανή συναρμολόγησης κυλίνδρων και μια αυτόματη γραμμή παραγωγής βαφής. Υφιστάμενος κρίσιμος εξοπλισμός άνω των 300 σετ (σετ). Η βέλτιστη κατανομή και η αποτελεσματική χρήση των πόρων του εξοπλισμού διασφαλίζουν τις απαιτήσεις ακρίβειας των προϊόντων και καλύπτουν τις ανάγκες υψηλής ποιότητας των προϊόντων.

(2) Κατεργασία

Το εργαστήριο κατεργασίας είναι εξοπλισμένο με ένα προσαρμοσμένο κέντρο τόρνευσης με κεκλιμένη ράγα, κέντρο κατεργασίας, μηχανή λείανσης υψηλής ταχύτητας, ρομπότ συγκόλλησης και άλλο συναφή εξοπλισμό, το οποίο μπορεί να χειριστεί την επεξεργασία κυλινδρικών σωλήνων με μέγιστη εσωτερική διάμετρο 400 mm και μέγιστο μήκος 6 μέτρων.

(3) Συγκόλληση

(4) Βαφή και επίστρωση

Με μικρές και μεσαίες αυτόματες γραμμές επίστρωσης χρωμάτων με βάση το νερό, για την επίτευξη αυτόματης φόρτωσης και εκφόρτωσης ρομπότ και αυτόματου ψεκασμού, η ικανότητα σχεδιασμού 4000 τεμαχίων ανά βάρδια,
Διαθέτουμε επίσης μια ημιαυτόματη γραμμή παραγωγής χρωμάτων για μεγάλους κυλίνδρους που τροφοδοτείται από μια αλυσίδα ισχύος, με δυνατότητα σχεδιασμού 60 κιβωτίων ανά βάρδια.

(5) Δοκιμές

Διαθέτουμε πρώτης τάξεως εγκαταστάσεις επιθεώρησης και δοκιμαστικές κλίνες για να διασφαλίσουμε ότι η απόδοση του κυλίνδρου ανταποκρίνεται στις απαιτήσεις.

 

 

We are one of the best hydraulic cylinder manufacturers. We can offer comprehensive hydraulic cylinders. We also provide corresponding γεωργικά κιβώτια ταχυτήτων. Έχουμε εξάγει τα προϊόντα μας σε πελάτες σε όλο τον κόσμο και έχουμε κερδίσει μια καλή φήμη λόγω της ανώτερης ποιότητας των προϊόντων μας και της εξυπηρέτησης μετά την πώληση. Καλωσορίζουμε τους πελάτες στο εσωτερικό και στο εξωτερικό να επικοινωνήσουν μαζί μας για να διαπραγματευτούν τις επιχειρήσεις, να ανταλλάξουν πληροφορίες και να συνεργαστείτε μαζί μας!

 

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