Welcome to Ningbo Hyforce Hydraulic Machinery Co., Ltd.
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
English
 |
| Quantity: | |
|---|---|
4WEH16E6X/G12ETZ5L, 4WEH16E6X/G24ETZ5L, 4WEH16E6X/W110ETZ5L, 4WEH16E6X/W220ETZ5L, 4WEH16G6X/G12ETZ5LP4.5, 4WEH16G6X/G24ETZ5LP4.5, 4WEH16G6X/W110ETZ5LP4.5, 4WEH16G6X/W220ETZ5LP4.5, etc.
HYFORCE HYDRAULICS / OEM is also avaliable.
A11-A12
Overview
The 4WEH16 is a pilot-operated electro-hydraulic directional control valve engineered for high-flow, high-pressure hydraulic systems. This NG16 / CETOP 7 size valve combines low-wattage pilot solenoids with a robust main stage to deliver exceptional flow capacity with minimal pressure drop, making it ideal for heavy-duty industrial and mobile applications.
Key Functions
Two-Stage Operation: Pilot solenoids control a small flow that shifts the large main spool, enabling high flow rates with low electrical power consumption
Proportional Control Capability: Optional versions allow infinite spool positioning for precise speed control
High-Flow Management: Handles large volumes of hydraulic fluid for big bore cylinders and high-speed motors
Shock-Free Switching: Optional damping features provide smooth transitions to prevent hydraulic shock in sensitive systems
Primary Applications
Industry | Typical Equipment |
|---|---|
Heavy Machinery | Large excavators, mining equipment, tunnel boring machines |
Metal Forming | Hydraulic presses (500+ tons), forging equipment, stamping lines |
Marine & Offshore | Ship steering gear, winches, crane systems, subsea equipment |
Energy | Wind turbine pitch control, hydroelectric gate systems |
Infrastructure | Bridge lifting systems, dam control gates, heavy transport |
Detailed Usage Scenarios
Scenario 1: Large Hydraulic Press (1000-Ton Stamping) In automotive manufacturing, the 4WEH16 controls the main ram cylinder of large stamping presses. The valve manages 200+ L/min flow during rapid approach, switches to high-pressure mode for forming (350 bar), and provides precise deceleration before die contact. The pilot-operated design allows the press controller to use standard 24V DC outputs despite the massive hydraulic power involved.
Scenario 2: 30-Ton Excavator Boom Control For mid-size excavators, the 4WEH16 manages the primary boom and arm cylinders. When the operator moves the joystick, the pilot solenoids receive low-current signals (1.5A), which shift the main stage to direct 200+ L/min to the cylinders. This provides smooth, proportional control of heavy loads while keeping electrical power consumption low—critical for battery-hybrid excavators.
Scenario 3: Offshore Platform Crane In marine environments, the 4WEH16 controls the winch and luffing cylinders of platform cranes lifting 50+ ton loads. The valve's corrosion-resistant coating and sealed pilot chambers withstand salt spray, while its fast response enables precise load positioning in rough sea conditions. Redundant sealing prevents environmental contamination in case of seal failure.
Scenario 4: Wind Turbine Pitch Control For 2-5 MW wind turbines, the 4WEH16 adjusts blade pitch angles to optimize power generation and provide emergency feathering. The valve operates in harsh outdoor conditions (-40°C to +60°C) with high reliability, switching flow to three pitch cylinders simultaneously to rotate 30-meter blades within 8 seconds during emergency stops.
Technical Specifications
Nominal size: NG16 / CETOP 7
Maximum pressure: 350 bar (5,075 psi) main stage / 315 bar pilot
Maximum flow: 300 L/min (79 gpm) with minimal pressure drop
Pilot solenoid voltage: 24V DC standard (12V DC, 110V AC, 220V AC optional)
Response time: 40-80ms (dependent on pilot pressure and viscosity)
Operating temperature: -30°C to +80°C (special seals for extreme cold available)
Overview
The 4WEH16 is a pilot-operated electro-hydraulic directional control valve engineered for high-flow, high-pressure hydraulic systems. This NG16 / CETOP 7 size valve combines low-wattage pilot solenoids with a robust main stage to deliver exceptional flow capacity with minimal pressure drop, making it ideal for heavy-duty industrial and mobile applications.
Key Functions
Two-Stage Operation: Pilot solenoids control a small flow that shifts the large main spool, enabling high flow rates with low electrical power consumption
Proportional Control Capability: Optional versions allow infinite spool positioning for precise speed control
High-Flow Management: Handles large volumes of hydraulic fluid for big bore cylinders and high-speed motors
Shock-Free Switching: Optional damping features provide smooth transitions to prevent hydraulic shock in sensitive systems
Primary Applications
Industry | Typical Equipment |
|---|---|
Heavy Machinery | Large excavators, mining equipment, tunnel boring machines |
Metal Forming | Hydraulic presses (500+ tons), forging equipment, stamping lines |
Marine & Offshore | Ship steering gear, winches, crane systems, subsea equipment |
Energy | Wind turbine pitch control, hydroelectric gate systems |
Infrastructure | Bridge lifting systems, dam control gates, heavy transport |
Detailed Usage Scenarios
Scenario 1: Large Hydraulic Press (1000-Ton Stamping) In automotive manufacturing, the 4WEH16 controls the main ram cylinder of large stamping presses. The valve manages 200+ L/min flow during rapid approach, switches to high-pressure mode for forming (350 bar), and provides precise deceleration before die contact. The pilot-operated design allows the press controller to use standard 24V DC outputs despite the massive hydraulic power involved.
Scenario 2: 30-Ton Excavator Boom Control For mid-size excavators, the 4WEH16 manages the primary boom and arm cylinders. When the operator moves the joystick, the pilot solenoids receive low-current signals (1.5A), which shift the main stage to direct 200+ L/min to the cylinders. This provides smooth, proportional control of heavy loads while keeping electrical power consumption low—critical for battery-hybrid excavators.
Scenario 3: Offshore Platform Crane In marine environments, the 4WEH16 controls the winch and luffing cylinders of platform cranes lifting 50+ ton loads. The valve's corrosion-resistant coating and sealed pilot chambers withstand salt spray, while its fast response enables precise load positioning in rough sea conditions. Redundant sealing prevents environmental contamination in case of seal failure.
Scenario 4: Wind Turbine Pitch Control For 2-5 MW wind turbines, the 4WEH16 adjusts blade pitch angles to optimize power generation and provide emergency feathering. The valve operates in harsh outdoor conditions (-40°C to +60°C) with high reliability, switching flow to three pitch cylinders simultaneously to rotate 30-meter blades within 8 seconds during emergency stops.
Technical Specifications
Nominal size: NG16 / CETOP 7
Maximum pressure: 350 bar (5,075 psi) main stage / 315 bar pilot
Maximum flow: 300 L/min (79 gpm) with minimal pressure drop
Pilot solenoid voltage: 24V DC standard (12V DC, 110V AC, 220V AC optional)
Response time: 40-80ms (dependent on pilot pressure and viscosity)
Operating temperature: -30°C to +80°C (special seals for extreme cold available)
